2018 24 Hours of Daytona: Difference between revisions
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McMurry brought the No. 90 Spirit of Racing car into his garage with a misfiring engine and later retired. Tandy got past [[Antonio García (racing driver)|Antonio García]]'s No. 3 Corvette but he clipped the curb at the Bus Stop chicane too hard and speared into the tyre barrier after losing control of his vehicle's rear leaving the turn. He returned back to the pit lane with heavy car damage. Another puncture happened as it turned January 28 when Nasr's right-rear tire failed but minimal car damage was sustained and he went to the pit lane for a replacement wheel.<ref name="R&TBlog" /><ref name=DSCH6-12/> The lead of GTD changed to [[Adam Christodoulou]]'s No. 33 Riley Mercedes-AMG because the dominant No. 29 Land Motorsport Audi R8 of Schmidt was determined to have exceeded the maximum rate of permitted fuel flow (a balance of performance transgression) at his pit stops by IMSA who ordered the team to serve a stop-and-hold penalty plus five minutes.<ref name=RacerH10>{{Cite web|url=http://www.racer.com/imsa/item/147037-rolex-24-hour-10-penskes-back-on-top-gtd-leader-penalized|title=Rolex 24 Hour 10: Penske Acuras back on top; GTD leader penalized|last=Pruett|first=Marshall|date=January 27, 2018|website=Racer|archive-url=https://web.archive.org/web/20180128114911/http://www.racer.com/imsa/item/147037-rolex-24-hour-10-penskes-back-on-top-gtd-leader-penalized|archive-date=January 28, 2018|dead-url=yes|access-date=June 12, 2018}}</ref> The race's second full course yellow was activated for eighteen minutes when [[Roberto González Valdez|Roberto González]] was on his out-lap on cold tyres and went straight into the tyre barrier at the third corner.<ref name="R&TBlog" /><ref name=DSCH6-12/><ref name=RacerH10/> Mustang Sampling Racing chose to change the brake discs on their No. 5 car during the caution, allowing Ricky Taylor and Pagenaud into first and second places overall.<ref name=DSCH6-12/><ref name=RacerH10/> |
McMurry brought the No. 90 Spirit of Racing car into his garage with a misfiring engine and later retired. Tandy got past [[Antonio García (racing driver)|Antonio García]]'s No. 3 Corvette but he clipped the curb at the Bus Stop chicane too hard and speared into the tyre barrier after losing control of his vehicle's rear leaving the turn. He returned back to the pit lane with heavy car damage. Another puncture happened as it turned January 28 when Nasr's right-rear tire failed but minimal car damage was sustained and he went to the pit lane for a replacement wheel.<ref name="R&TBlog" /><ref name=DSCH6-12/> The lead of GTD changed to [[Adam Christodoulou]]'s No. 33 Riley Mercedes-AMG because the dominant No. 29 Land Motorsport Audi R8 of Schmidt was determined to have exceeded the maximum rate of permitted fuel flow (a balance of performance transgression) at his pit stops by IMSA who ordered the team to serve a stop-and-hold penalty plus five minutes.<ref name=RacerH10>{{Cite web|url=http://www.racer.com/imsa/item/147037-rolex-24-hour-10-penskes-back-on-top-gtd-leader-penalized|title=Rolex 24 Hour 10: Penske Acuras back on top; GTD leader penalized|last=Pruett|first=Marshall|date=January 27, 2018|website=Racer|archive-url=https://web.archive.org/web/20180128114911/http://www.racer.com/imsa/item/147037-rolex-24-hour-10-penskes-back-on-top-gtd-leader-penalized|archive-date=January 28, 2018|dead-url=yes|access-date=June 12, 2018}}</ref> The race's second full course yellow was activated for eighteen minutes when [[Roberto González Valdez|Roberto González]] was on his out-lap on cold tyres and went straight into the tyre barrier at the third corner.<ref name="R&TBlog" /><ref name=DSCH6-12/><ref name=RacerH10/> Mustang Sampling Racing chose to change the brake discs on their No. 5 car during the caution, allowing Ricky Taylor and Pagenaud into first and second places overall.<ref name=DSCH6-12/><ref name=RacerH10/> |
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In GTD, [[Katherine Legge]] took over the class lead in the No. 86 Michael Shank Racing Acura NSX when the No. 33 Riley Mercedes-AMG was served a stop-and-hold penalty for speeding in the pit lane but lost it soon after to Perera's No. 48 Paul Miller Racing Lamborghini |
In GTD, [[Katherine Legge]] took over the class lead in the No. 86 Michael Shank Racing Acura NSX when the No. 33 Riley Mercedes-AMG was served a stop-and-hold penalty for speeding in the pit lane but lost it soon after to Perera's No. 48 Paul Miller Racing Lamborghini Huracán and Brekers took second place in the class for Grasser Racing Team. Meanwhile, the top four overall cars were separated by six seconds and a battle for second place was being contested by three cars.<ref name=DSCH6-12/> Barbosa sidedrafted Pagenaud with fourth-placed Nasr slipstreaming both cars on the approach to the Bus Stop chicane. Nasr out-braked both vehicles and passed them for second overall. [[Graham Rahal]] was now driving the No.7 Penske Acura but was overtaken by Barbosa and Nasr. Ten hours and thirty-minutes in, Alonso drove No. 23 United Autosports car into the garage with a master brake cylinder failure and fell out of contention for a top ten finish. The trio of Barbosa, Nasr and Rahal were separated by one second with Pagenaud slightly drawing closer in fourth. Nasr lost second to Rahal in the eleventh hour and Pagenaud took the lead for a short while when they made pit stops for fuel. Rahal extended his advantage upfront as Barbosa and Nasr lost time on cold tyres but Pagenaud gained first when Rahal spun and stalled at turn one.<ref name="R&TBlog" /><ref name=DSCH6-12/><ref>{{Cite web|url=http://www.racer.com/imsa/item/147038-rolex-24-hour-11-axr-back-in-front-no-23-in-garage|title=Rolex 24 Hour 11: AXR back in front, No.23 in garage|last=Pruett|first=Marshall|date=January 28, 2018|website=Racer|archive-url=https://web.archive.org/web/20180128114856/http://www.racer.com/imsa/item/147038-rolex-24-hour-11-axr-back-in-front-no-23-in-garage|archive-date=January 28, 2018|dead-url=yes|access-date=June 13, 2018}}</ref> |
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===Results=== |
===Results=== |
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Revision as of 08:14, 13 June 2018
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The 56th Rolex 24 at Daytona was an endurance sports car racing event held at the Daytona International Speedway, Daytona Beach, Florida on January 27–28, 2018. It was also the first of twelve races for the 2018 WeatherTech SportsCar Championship, the 56th running of the event, and the first of four rounds of the North American Endurance Cup.
The overall winner was the No. 5 Mustang Sampling Racing Cadillac raced by Filipe Albuquerque, João Barbosa and Christian Fittipaldi, with a record total distance of 2,876.85 mi (4,629.84 km). The GTLM Class was won by the No. 67 Ford Chip Ganassi Racing Ford GT driven by Scott Dixon, Ryan Briscoe and Richard Westbrook. The No. 11 GRT Grasser Racing Team Lamborghini Huracán GT3 driven by Mirko Bortolotti, Rik Breukers, Rolf Ineichen and Franck Perera won the GTD Class, despite having to start from the back.
Background
Entry list
Fifty cars were officially entered for the 24 Hours of Daytona with the bulk of entries in the Prototype and Gran Touring Daytona (GTD) categories.[1] The 2017 race winners, Wayne Taylor Racing, returned to defend their title.[2] Three existing teams, Action Express Racing, Spirit of Daytona Racing and Extreme Speed Motorsports, all fielded two Daytona Prototype International (DPi) cars called Cadillac DPi-V.R and Nissan Onroak DPi. Wayne Taylor Racing sent a solitary Cadillac DPi-V.R chassis to the race.[3] Penske Racing made their full-time sports car racing competition comeback for the first time since the 2009 Rolex Sports Car Series and fielded a pair of Honda-powered Acura ARX-05 DPis for 2018.[4] Mazda returned to sports car racing after withdrawing with three races left in the 2017 season so their duo of RT24-Ps could be re-engineered by German outfit Team Joest.[5] They were joined by ten global-specification Le Mans Prototype 2 (LMP2) cars, represented by three out of the four major chassis: a sextet of Oreca 07s entered by JDC-Miller Motorsports, Jackie Chan DCR JOTA (two each), Performance Tech Motorsports, CORE Autosport (both one). a trio of Ligier JS P217s utilised by PR1/Mathiasen Motorsports (one) and United Autosports (two), and one BAR1 Motorsports-operated Riley Mk. 30.[1][6]
After the retirement of the aging Prototype Challenge class at the end of 2017 due to declining interest from teams,[7] Grand Touring Le Mans (GTLM) was made the highest-ranking class below the Prototype category in the WeatherTech SportsCar Championship and had nine cars from five different manufacturers entered for Daytona.[2] The BMW M8 GTE made its racing competition debut at the track and two chassis were entered by Team RLL for the whole season.[8] Porsche fielded a pair of 911 RSRs for the second successive season and Chip Ganassi Racing entered their two Ford GTs for the third consecutive year.[9] Ferrari once again aligned with Risi Competizione for one 488 GTE,[9] while Corvette Racing once again transported their aging duo of C7.Rs to Daytona.[7] GTD comprised twenty-one cars amongst eight GT3 manufacturers.[3] Ferrari was the most represented marque in the category with four 488s: two by Scuderia Corsa and one each from Spirit of Race and Risi Competizione.[2][7] The rest of the GTD field was made of a mix of teams and automotive brands, including two Grasser Racing Team-entered Lamborghini Huracáns with a third by Paul Miller Racing, a trio of Riley Motorsports entered Mercedes-AMGs, three Acura NSXs utilised by Michael Shank Racing and HART and three Porsche 911 Rs with one each from Park Place Motorsports, Wright Motorsports and Manthey Racing. Other cars fielded were a duo of Audi R8 LMS from Magnus Racing and Montaplast and two Lexus RC Fs by 3GT Racing with a sole BMW M6 entered by Turner Motorsport.[6]
Each car was driven by two drivers who contested the entire WeatherTech SportsCar Championship, and with at least one additional racer signed for all four rounds of the North American Endurance Cup.[10] These additional participants were recruited from a variety of racing categories, including the FIA World Endurance Championship (such as Simon Trummer for JDC-Miller Motorsports), the Deutsche Tourenwagen Masters (such as René Rast for Mazda Team Joest), and the IndyCar Series (such as Ryan Hunter-Reay for Wayne Taylor Racing) among others.[11] Some drivers were competing at Daytona on a one-off basis, such as two-time Formula One World Champion Fernando Alonso,[12] Williams driver Lance Stroll and Formula E racers Felix Rosenqvist and António Félix da Costa.[13] Also entering were A. J. Allmendinger, Justin Marks, Brendan Gaughan and Austin Cindric from NASCAR,[14] and 2017 Formula Three European Champion Lando Norris.[15] The only exception to this applied to Stuart Middleton, who won the Sunoco Whelen Challenge by virtue of securing the GT4 category title in his debut year in the British GT Championship, earning him a seat with Action Express Racing.[16]
Preview
The 24 Hours of Daytona was confirmed as part of the International Motor Sports Association's (IMSA) schedule for the 2018 WeatherTech SportsCar Championship by series president Scott Atherton in August 2017.[17] It was the fifth consecutive year the race was held as part of the WeatherTech SportsCar Championship, and the fifty-sixth 24 Hours of Daytona,[17] counting the period between 1962 and 2013 when it was a round of the World Sportscar Championship, the IMSA GT Championship, the United States Road Racing Championship and the Rolex Sports Car Series.[18][19] The 24 Hours of Daytona was the first of twelve scheduled sports car endurance races of 2018 by IMSA, and served as the opening round of the four-race North American Endurance Cup.[17] The race was held at the twelve-turn 3.56 mi (5.73 km) Daytona International Speedway combined road course in Daytona Beach, Florida on 27–28 January.[17][18]
The 24 Hours of Daytona was conceived by NASCAR founder Bill France Sr. who built the Daytona International Speedway in 1959. He sought to attract sports car European endurance racing to the United States as a means of providing international exposure to Daytona.[19] The race was first run as a three-hour event in 1962 before doubling its length two years later. It switched to a twenty-four hour race format in 1966 and has remained that way since.[20] The 24 Hours of Daytona garnered the early reputation of being an American detour for European drivers. IMSA later began adopting its own car regulations starting in the 1980s when the race's popularity peaked and this isolated the event from the international motor racing scene thereafter.[19] Nevertheless, the 24 Hours of Daytona, along with the 12 Hours of Sebring and the 24 Hours of Le Mans, is informally considered part of the "Triple Crown of Endurance Racing".[18]
The week before the official three-day test session at the circuit, IMSA altered the balance of performance in all three categories. All classes had their maximum revolutions per minute (rpm) defined by IMSA. 10 kg (22 lb) of weight was added to the Cadillac DPi-V.Rs compared to 2017 with its air restrictor increased by 1.8 mm (0.071 in). The duo of Nissan Onroak DPis and the two Acura ARX-05s had its weight increased to 940 kg (2,070 lb), 10 kg (22 lb) more than the global-specification LMP2 chassis and the pair of Mazda RT24-Ps. The Nissan and Mazda engines were not altered but IMSA changed the aerodynamic packages on some of the Prototypes. The debuting BMW M8 GTE's weight was established at 1,250 kg (2,760 lb) and its turbocharger boost curve was revised over its predecessor and the Mercedes-AMG GTD car had its air restrictor enlarged by 1 mm (0.039 in).[21]
Testing
Three days worth of testing divided into seven sessions was held at the circuit from 5–7 January involving all 50 entries.[22] João Barbosa set the fastest time early in the first day's running with a one minute and 37.266 seconds lap for the No. 5 Mustang Sampling Racing Cadillac,[23] and co-driver Filipe Albuquerque later improved on the lap in the second session to a one minute and 37.196 seconds.[24] The fastest global-specification LMP2 lap came from Colin Braun in the No. 54 CORE Autosport Oreca 07 who was second-fastest overall and the No. 10 Wayne Taylor Racing Cadillac driven by Renger van der Zande placed third.[24] Tristan Vautier set the fourth-fastest lap time driving for Spirit of Daytona in its No. 90 Cadillac and Ho-Pin Tung in the No. 78 Jackie Chan DCR JOTA Oreca 07 rounded out the top five.[25] Laurens Vanthoor led GTLM in the No. 912 Porsche 911 RSR with a one minute and 44.065 seconds lap in the second session, and teammate Nick Tandy in the sister No. 911 was third; the two were separated by Richard Westbrook's No. 67 Chip Ganassi Racing Ford GT.[26] GTD was topped by the No. 11 Grasser Team Racing Lamborghini Huracán of Rolf Ineichen and later Franck Perera with the two ahead of Matteo Cairoli's No. 59 Manthey Racing Porsche 911 R.[24][25]
The second day's testing had Felipe Nasr top the time sheets in the No. 31 Action Express Racing Cadillac at one minute and 36.793 seconds. Jordan Taylor improved Wayne Taylor Racing's No. 10 Cadillac best time and was second quickest overall. Albuquerue was driving slower than the previous day and was third. Eddie Cheever III, driving the No. 90 Spirit of Racing Cadillac, was fourth-fastest by setting a faster lap than co-driver Vautier in the day's second session, while the No. 78 Jackie Chan DCR JOTA Oreca 07 was the highest-placed LMP2 car in fifth with Alex Brundle driving. The No 66 Chip Ganassi Racing Ford GT of Sébastien Bourdais moved to the top of GTLM with a lap time at one minute and 43.795 seconds in the fourth session. Gianmaria Bruni was second-quickest in the No. 912 Porsche 911 RSR, Ryan Briscoe put the sister No. 67 Chip Ganassi Racing Ford GT in third place and Alessandro Pier Guidi's No. 62 Risi Competizione Ferrari 488 GTE was fourth-fastest. GTD was still led by the No. 11 Grasser Team Racing Lamborghini Huracán car courtesy of Ineichen's lap on the first day while Manthey Racing's No. 59 Porsche 911 R remained second but driver Sven Müller improved its best lap time.[27][28]
The third and concluding day of testing featured a qualifying session to determine the locations of the team's pit stalls and garages for the race three weeks later.[29] Nasr's No. 31 Action Express Racing Cadillac set the fastest overall lap time of any driver in testing with a one minute and 35.806 seconds effort. The second-fastest car was the No. 90 Spirit of Racing Cadillac of Vautier and Albuquerque put the No. 5 Mustang Sampling Racing Cadillac in third position. Wayne Taylor Racing placed fourth from a lap by van der Zande and Dane Cameron completed the top five overall runners in the No. 6 Penske Racing Acura ARX-05. Joey Hand set the fastest overall GTLM testing lap in the No. 66 Chip Ganassi Racing Ford GT with a one minute and 43.610 seconds lap, followed by Oliver Gavin's No. 4 Chevrolet Corvette C7.R in second, and the sister No. 67 Ford GT driven by Briscoe. Ineichen's lap from the first day of testing was never bettered and the No. 11 Grasser Team Racing Lamborghini Huracán remained the fastest GTD car while Cairoli's first session lap in the No. 59 Porsche 911 R fielded by Manthey Racing was fastest enough to keep it second in class.[30]
Post-testing balance of performance adjustments
After testing, IMSA adjusted the balance of performance for the second time in all categories. The Cadillac DPi-V.Rs had their fuel capacity enlarged by 1 L (0.22 imp gal; 0.26 US gal) along with their refuelling restrictors by 0.5 L (0.11 imp gal; 0.13 US gal) but their air restrictors were 0.6 mm (0.024 in). The size of the fuel tanks in the Acura ARX-05 and the Nissan Onroak DPis were increased by 4 L (0.88 imp gal; 1.1 US gal) and 2 L (0.44 imp gal; 0.53 US gal) with the size of both car's fuel restrictors increased by 1.5 mm (0.059 in) and the latter's boost pressure was increased to peak at 7,100 rpm. The Mazda RT24-Ps were 15 kg (33 lb) lighter, its rev limit was raised to 8,600 rpm and its air restrictor was lengthened by 0.5 mm (0.020 in). The Acura, Nissan and Mazda DPis gurney flaps were adjusted for aerodynamic purposes.[31] All GTLM cars bar the Ferrari 488 GTE had the size of the their fuel tanks adjusted. The Chevrolet Corvette's C7.R's top speed was lowered through alterations of their rear wing angles by two degrees while the Ford GT's angles were increased by three degrees and the Porsche 911 RSRs fuel restrictors were reduced in size by 1 mm (0.039 in). In GTD, the Acura NSX GT3 lost 10 kg (22 lb) in weight and the Mercedes-AMG was made 15 kg (33 lb) heavier. Turbocharger adjustments were made to the Audi R8 LMS, Lamborghini Huracán, and the BMW M6 cars[31]
Practice and qualifying
Four practice sessions were held before the start of the race on Saturday, three on Thursday and one on Friday. The first two sessions held on Thursday morning and afternoon respectively lasted for an hour. The third held later that evening ran for ninety minutes, and the fourth on Friday morning lasted an hour.[32]
Rast in the No. 77 Mazda Team Joest RT24-P set the fastest lap of the first practice session at one minutes and 37.428 seconds, 0.007 seconds faster than Spirit of Racing's No. 90 Cadillac of Vautier. Jordan Taylor put the No. 10 Wayne Taylor Racing Cadillac in third overall with Albuquerue placing the No. 5 Mustang Sampling Racing car in fourth. The highest-placed LMP2 car was Brundle's No. 78 Jackie Chan DCR JOTA entry in fifth place.[33] Early in the session, Phil Hanson was driving on cold tyres, and made an error that caused him to run into the turn five tire barrier, sustaining damage to the front of his No. 23 United Autosports Ligier JS P2 car.[34] Practice was red-flagged for eight minutes and forty-nine seconds so that Hanson's car could be removed from the circuit.[33] In GTLM, the No. 66 Chip Ganassi Racing Ford GT of Hand topped the time sheets with a lap of one minute and 44.571 seconds. Per Guidi put the the No. 62 Risi Competizione’s Ferrari 488 GTE in second, and Vanthoor in Porsche's No. 912 911 RSR was third. Miguel Molina's No. 82 Risi Competizione's Ferrari 488 GT3 was fastest in GTD, and Pedro Lamy set the second-fastest class lap in Spirit of Race's No. 51 entry.[33]
In the second practice session, Hélio Castroneves in the No. 6 Penske Acura ARX-05 recorded the fastest lap of the day up until that point with a time of one minute and 37.096 seconds. He was ahead of the No. 22 Extreme Speed Motorsports Nissan Onroak DPi of Nicolas Lapierre and Albquerque's No. 5 Mustang Sampling Racing car. The leading LMP2 car was Colin Braun behind the wheel of the No. 54 CORE Autosport car in fourth and Jonathan Bomarito rounded out the top five in Mazda Team Joest's No. 55 vehicle.[35] GTLM was led by Patrick Pilet in the No. 911 Porsche 911 RSR with a one minute and 43.902 seconds lap set late in the session, and the No. 3 Chevrolet Corvette C7.R of Jan Magnussen was second. Westbrook in the No. 66 Chip Ganassi Racing Ford GT rounded out the top three in the category.[35] Álvaro Parente's No. 86 Michael Shank Racing Acura-NSX GT3 was the fastest driver in GTD, while Molina was 0.242 seconds slower in the No. 82 Risi Competizione Ferrari 488 GT3.[36]
Thursday afternoon's qualifying session was divided into three groups and lasted for a total of seventy-five minutes.[32] GTD cars were sent onto the track first for fifteen minutes with a ten minute interval before those grouped in GTLM and Prototype ventured separately onto the circuit. Regulations stipulated that teams are required to nominate a single driver to qualify their respective vehicles and the starting order determined by the competitor's fastest lap times. IMSA then arranged the grid so that the Prototype and GTLM entrants would begin the race ahead of the GTD field.[10] Van Der Zande in the No. 10 Wayne Taylor Racing car clinched the third pole position of his career. and his team's first at Daytona since Max Angelelli in the 2010 race,[37] on his final lap of the session with a time of one minute and 36.083 seconds in spite of running deep at turn five after braking later than usual.[38] He was joined on the front row of the grid by the No. 7 Penske Racing Acura ARX-05 of Castroneves which had the pole position for the closing minutes of qualifying until van der Zande's lap. On his final timed lap, Albuquerue qualified the No. 5 Mustang Sampling Racing Cadillac in third place, and Patricio O'Ward took fourth in the No. 38 Performance Tech Racing Oreca 07 to become the highest-placed LMP2 car in the field.[39] Early pace setter Vautier in the No. 90 Spirit of Racing car ended up fifth while Robin Frijns' No. 78 Jackie Chan DCR JOTA entry secured sixth.[38] Nasr was driving faster but stopped on the track with an electrical fault and was restricted to seventh.[40] Braun qualified the No. 54 CORE Autosport car eighth, Bomarito in the No. 55 Mazda Team Joest RT24-P ninth, and Cameron's No. 6 Penske Racing entry rounded out the top ten.[41] Lapierre was unable to set a lap time in the No. 22 Extreme Speed Motorsports car after locking his brakes on his first timed lap, and drove into the tyre barriers at the West Horseshoe, damaging its front-left suspension.[38][42] Extreme Speed Motorsports' No. 2 entry did not participate due to a precautionary engine switch,[39] and Mazda Team Joest's No. 77 car was absent because of a pre-qualifying data irregularity.[42]
In GTLM, Magnussen's No. 3 Chevrolet Corvette C7.R drafted his teammate Gavin in the sister car and took his fourth class pole position in the WeatherTech SportsCar Championship, and suppressed Hand's 2017 lap record with a time of one minute and 42.779 seconds. Magnussen was 0.019 seconds faster than the second-placed qualifier Hand in the No. 66 Chip Ganassi Racing Ford GT. Following in third place was the No. 912 Porsche 911 RSR of Vanthoor, with the sister No. 911 car driven by Pilet taking fourth position.[43] Westbrook completed the top five class competitors in the slower of the two Ford GTs.[39] Daniel Serra in the No. 51 Spirit of Race Ferrari 488 GT3 was the first driver to record a GTD lap time in the one minute and 46 second range midway through the session,[39][44] and this secured him his second pole position of his career, and in any class since the 2016 Monterey Grand Prix with a one minute and 46.407 seconds lap. Molina made it an all-Ferrari category front row in the No. 82 Risi Competizione entry.[43] The No. 11 Grasser Team Racing Lamborghini Huracán of Mirko Bortolotti was the third-fastest class qualifier, but the car was demoted to the rear of the GTD field as it failed a mandatory stall test in post-qualifying technical inspection. Hence, Jack Hawksworth inherited third in the No. 15 3GT Racing Lexus RC F GT3,[43] Alessandro Balzan's No. 63 Scuderia Corsa Ferrari 488 GT3 started fourth, and Dominik Baumann's slower Lexus rounded out the top five.[39] Two GTD cars failed to record a lap time: The No. 73 Park Place Motorsports Porsche 911 R's tire punctured while on its out lap, and P1 Motorsport's No. 73 Mercedes-AMG GT3 had brake problems.[45]
The third practice session was run at night and had Vautier's No. 90 Spirit of Race car set the fastest overall lap of one minute and 37.210 seconds. Castroneves was almost two-tenths of a second behind in second, with the No. 22 Extreme Speed Motorsports entry of Pipo Derani in third. Harry Tincknell in the No. 55 Mazda Team Joest RT24-P placed fourth in the time sheets, and Norris' No. 23 United Autosports car was running quicker and completed the top five.[46] Kyle Masson caused the first stoppage of the session when his No. 38 Performance Tech Motorsports Oreca 07 ran out of fuel on track, and required recovery back to the pit lane. Later, Gustavo Menezes' No. 99 JDC-Miller Motorsports car blew its right-rear tire entering Speedway turn two at high-speed, but controlled his car throughout and avoided hitting the wall, although this stopped practice for twelve minutes.[47] Ford GTs took the first two placings in GTLM with the No. 66 car of Bourdais faster than the sister No. 67 entry of Westbrook by two-tenths of a second. GTD was led by Bortolotti's No. 11 Grasser Racing Team Lamborghini Huracán, and Sam Bird, driving the No. 64 Scuderia Corsa Ferrari 488 GT3, was second in class.[47]
Mike Conway led the final practice session in the No. 31 Whelen Engineering Racing entry with a time of one minute and 36.865 seconds, and Stroll's No. 37 Jackie Chan DCR JOTA car was second-fastest. The No. 90 Spirit of Race Cadillac driven by Vautier set the third-quickest lap, and Rast's No. 77 Mazda Team Joest car, along with Albuquerque's No. 5 Mustang Sampling Racing entry completed the top five overall runners.[48] Though the session passed relatively peacefully, the right-rear tire on the No. 32 United Autosports vehicle driven by Bruno Senna blew while circulating the track.[48][49] In GTLM, Hand once again went fastest in the class with a lap of one minute and 44.602 seconds. Bruni was second-fastest in the No. 912 Porsche 911 RSR, and his teammate Pilet placed third in the sister No. 911 Porsche. Cairoli set the fastest time in GTD, and was followed by Jeroen Bleekemolen in the No. 33 Riley Motorsports Mercedes-AMG GT3 car.[50]
Pre-race
Ricky Taylor, co-driver of the No. 6 Penske entry, checked himself into practical quarantine because he had been suffering from flu for the past three days. He was consequently prescribed Oseltamivir, and advised not to come into contact with his teammates.[51] Meanwhile, Tomy Drissi was required to withdraw from the race due to business commitments, leaving the No. 20 BAR1 Motorsports Riley Mk. 30 car to operate as a four-person entry.[52] The No. 2 Extreme Speed Motorsports, the No. 71 P1 Motorsports Mercedes-AMG, and the No. 77 Mazda entries were sent to the rear of their respective class fields because their teams had changed their respective starting drivers. Although Paul Miller Racing and Mazda changed engines in their respective cars (the No. 48 Lamborghini and the No. 77 RT24-P), they were not demoted any grid places since the race lasted more than six hours.[53]
Qualifying results
Pole positions in each class are indicated by ‡.[41]
| Pos. | Class | No. | Team | Driver | Time | Gap | Grid |
|---|---|---|---|---|---|---|---|
| 1 | P | 10 | Wayne Taylor Racing | Renger van der Zande | 1:36.083 | — | 1‡ |
| 2 | P | 7 | Acura Team Penske | Hélio Castroneves | 1:36.090 | +0.007 | 2 |
| 3 | P | 5 | Mustang Sampling Racing | Filipe Albuquerque | 1:36.194 | +0.111 | 3 |
| 4 | P | 38 | Performance Tech Motorsports | Patricio O'Ward | 1:36.318 | +0.235 | 4 |
| 5 | P | 90 | Spirit of Daytona Racing | Tristan Vautier | 1:36.472 | +0.389 | 5 |
| 6 | P | 37 | Jackie Chan DCR JOTA | Robin Frijns | 1:36.492 | +0.409 | 6 |
| 7 | P | 31 | Whelen Engineering Racing | Felipe Nasr | 1:36.508 | +0.425 | 7 |
| 8 | P | 54 | CORE Autosport | Colin Braun | 1:36.567 | +0.484 | 8 |
| 9 | P | 55 | Mazda Team Joest | Jonathan Bomarito | 1:36.633 | +0.550 | 9 |
| 10 | P | 6 | Acura Team Penske | Dane Cameron | 1:36.931 | +0.848 | 10 |
| 11 | P | 78 | Jackie Chan DCR JOTA | Alex Brundle | 1:36.982 | +0.899 | 11 |
| 12 | P | 85 | JDC-Miller Motorsports | Simon Trummer | 1:37.005 | +0.922 | 12 |
| 13 | P | 23 | United Autosports | Fernando Alonso | 1:37.008 | +0.925 | 13 |
| 14 | P | 99 | JDC-Miller Motorsports | Stephen Simpson | 1:37.124 | +1.041 | 14 |
| 15 | P | 32 | United Autosports | Bruno Senna | 1:38.186 | +2.103 | 15 |
| 16 | P | 52 | AFS/PR1 Mathiasen Motorsports | Gustavo Yacamán | 1:38.773 | +2.690 | 16 |
| 17 | P | 20 | BAR1 Motorsports | Alex Popow | 1:41.778 | +5.695 | 17 |
| 18 | GTLM | 3 | Corvette Racing | Jan Magnussen | 1:42.779 | +6.696 | 21‡ |
| 19 | GTLM | 66 | Ford Chip Ganassi Racing | Joey Hand | 1:42.798 | +6.715 | 22 |
| 20 | GTLM | 912 | Porsche GT Team | Laurens Vanthoor | 1:42.927 | +6.844 | 23 |
| 21 | GTLM | 911 | Porsche GT Team | Patrick Pilet | 1:43.062 | +6.979 | 24 |
| 22 | GTLM | 67 | Ford Chip Ganassi Racing | Richard Westbrook | 1:43.091 | +7.008 | 25 |
| 23 | GTLM | 4 | Corvette Racing | Oliver Gavin | 1:43.453 | +7.370 | 26 |
| 24 | GTLM | 62 | Risi Competizione | Toni Vilander | 1:43.601 | +7.518 | 27 |
| 25 | GTLM | 25 | BMW Team RLL | Alexander Sims | 1:43.948 | +7.865 | 28 |
| 26 | GTLM | 24 | BMW Team RLL | John Edwards | 1:44.413 | +8.330 | 29 |
| 27 | GTD | 51 | Spirit of Race | Daniel Serra | 1:46.049 | +9.966 | 30‡ |
| 28 | P | 22 | Tequila Patrón ESM | Nicolas Lapierre | 1:46.129 | +10.046 | 18 |
| 29 | GTD | 82 | Risi Competizione | Miguel Molina | 1:46.502 | +10.419 | 31 |
| 30 | GTD | 11 | GRT Grasser Racing Team | Mirko Bortolotti | 1:46.658 | +10.575 | 50 |
| 31 | GTD | 15 | 3GT Racing | Jack Hawksworth | 1:46.714 | +10.631 | 32 |
| 32 | GTD | 63 | Scuderia Corsa | Alessandro Balzan | 1:47.055 | +10.972 | 33 |
| 33 | GTD | 14 | 3GT Racing | Dominik Baumann | 1:47.186 | +11.103 | 34 |
| 34 | GTD | 86 | Michael Shank Racing with Curb-Agajanian | Álvaro Parente | 1:47.251 | +11.168 | 35 |
| 35 | GTD | 29 | Montaplast by Land-Motorsport | Sheldon van der Linde | 1:47.273 | +11.190 | 36 |
| 36 | GTD | 58 | Wright Motorsports | Robert Renauer | 1:47.291 | +11.208 | 37 |
| 37 | GTD | 96 | Turner Motorsport | Cameron Lawrence | 1:47.348 | +11.265 | 38 |
| 38 | GTD | 44 | Magnus Racing | Andy Lally | 1:47.442 | +11.359 | 39 |
| 39 | GTD | 59 | Manthey Racing | Sven Müller | 1:47.587 | +11.504 | 40 |
| 40 | GTD | 33 | Mercedes-AMG Team Riley Motorsports | Ben Keating | 1:47.796 | +11.713 | 41 |
| 41 | GTD | 64 | Scuderia Corsa | Sam Bird | 1:47.839 | +11.756 | 42 |
| 42 | GTD | 69 | HART | Ryan Eversley | 1:47.862 | +11.779 | 43 |
| 43 | GTD | 48 | Paul Miller Racing | Bryce Miller | 1:48.181 | +12.098 | 44 |
| 44 | GTD | 93 | Michael Shank Racing with Curb-Agajanian | Côme Ledogar | 1:48.239 | +12.156 | 45 |
| 45 | GTD | 75 | SunEnergy1 Racing | Kenny Habul | 1:48.326 | +12.243 | 46 |
| 46 | GTD | 19 | GRT Grasser Racing Team | Christoph Lenz | 1:51.531 | +15.448 | 47 |
| – | P | 77 | Mazda Team Joest | Did Not Participate | 19 | ||
| – | P | 2 | Tequila Patrón ESM | Did Not Participate | 20 | ||
| – | GTD | 73 | Park Place Motorsports | Did Not Participate | 48 | ||
| – | GTD | 71 | P1 Motorsports | Did Not Participate | 49 | ||
Race
Start
Weather conditions at the start of the race were dry but cloudy. The air temperature throughout was between 64 and 77 °F (18 and 25 °C) and the track temperature ranged from 62 and 80 °F (17 and 27 °C);[54] conditions were expected to remain consistent throughout the race, but a 70% chance of rain was forecast for Sunday.[32] The green flag was waved at 14:40 Eastern Standard Time (UTC−05:00) by Chip Ganassi Racing founder and owner Chip Ganassi to start proceedings.[32][55] Fifty cars were due to take the start, but Robert Renauer spun on cold tyres and heavily damaged the left-hand quarter of the No. 58 Wright Motorsports car when he hit the turn five inside wall during the first formation lap. Renauer was able to recover the car back to the pit lane where extensive repairs were carried out for the next three hours.[56][57][58] Van Der Zande led from the start with Castroneves close behind. Nasr moved into third by the third lap and overtook Castroneves around the outside for second at turn seven and the latter lost third to Albuquerque two corners later. The first round of green flag pit stops for fuel began on lap 17, with van der Zande stopping two laps later, but lost first to Albuquerque after all pit stops were carried out.[58] Elsewhere, Hand took over the lead of GTLM from Magnussen in the opening minutes, while Westbrook was also an early mover but fell to third after a slow pit stop to rectify brake issues, and the No. 29 Land Motorsport car of Jeffrey Schmidt moved to the front of GTD by having a faster pit stop than Molina who dropped to third in class.[59]
Early in the second hour, several cars were affected by problems during the second pit stop phase. The right-front wheel on the No. 55 Mazda of Bomarito detached and rested on the Armco barriers lining the circuit. Bomarito slowed to 45 mph (72 km/h) so he could return to pit lane, putting him three laps behind by the overall leader, and Tincknell relieved him at his pit box. Oliver Jarvis' sister No. 77 car was then transported into its garage due to a downshifting problem that put him behind the GTLM leaders and five laps behind the overall pace setters.[60][61][56] Santiago Creel relieved Molina in the No. 82 Risi Competizione Ferrari, but the car was affected by flash fire when fuel ignited at its pit stop after the nozzle was disconnected. The entry dropped 24 laps as it was tended to.[60][56] Ricky Taylor in the No. 7 Penske car was delayed by its left hand door coming loose due to a broken latch, but he remained on the same lap as the overall leader.[56] During this period, Vautier, Alonso and Barbosa all led outright.[60][61] Extreme Speed Motorsports gained the most positions: the No. 22 car of Derani had gained fifteen places from starting 18th, while Olivier Pla's sister No. 22 entry overcame an earlier cut tire that necessitated an unscheduled pit stop to run in seventh.[62]
Derani was gaining on Barbosa when the first full course caution period of the race was activated for fourteen minutes for James French in the No. 38 Performance Tech Motorsports Oreca who stopped on the oval banking at turn seven halfway through the third hour because of no fuel.[56][63] Barbosa kept first place from Derani at the restart as the pair were separated by the two Jackie Chan DCR JOTA cars, allowing the former to draw clear.and re-establish his advantage at the front of the field which grew to seven seconds.[64][65] Derani fell out of contention in the battle for the lead soon after as his right-rear tire burst, shredding the right-rear quarter of his car, and went to pit road for repairs. Matt McMurry was third in the No. 90 Spirit of Race car but fell to third when Hunter-Reay's No. 10 Wayne Taylor Racing entry, the No. 6 Penske of Simon Pagenaud, and Middleton's No. 31 Whelen Engineering car got past him the lap after the restart. Middleton came into contact with Pagenaud at turn five; in spite of both remaining on the lead lap, Middleton earned a drive-through penalty. As night fell, James Calado's No. 62 Risi Competizione and the No. 77 Mazda RT24-P of Nunez picked up punctures at the rear of their cars within twenty-eight minutes of each other.[63][64]
Night
Before the fourth hour's end, the right-rear tire on Jordan Taylor's car burst on the banking entering turn twelve but damage was minimal since he was near the pit lane and repairs took twenty-nine seconds.[63][66] Light rain began falling just as the fifth hour began which intensified enough soon after for the majority of the field to make pit stops for rain tyres. Marcel Fässler stayed on the circuit but was ten seconds slower than teammate Magnussen and was overtaken by the Fords of Bourdais and Scott Dixon. The rain later tapered off but the disparity of drying of the banking and the infield sections was problematic for rain tyre equipped cars. The first major incident in GTLM came four hours and forty-two minutes in when Bill Auberlen's No. 25 BMW M8 right-front tyre was cut 10 mm (1.0 cm) from debris on the banking leaving turn six but stayed off the wall and returned to his garage to repair front-right bodywork damage. Pilet remained on dry tyres and took the GTLM lead but dropped to fourth by the end of hour six. Meanwhile, Fittipaldi struggled on the wet track and lost the overall lead to Castroneves but it was later taken by Conway after making his pit stop two laps later than both cars.[63][67][68] Norris was the best-placed LMP2 car and was sometimes the fastest on track and gained positions through superior fuel economy before Hanson took over driving duties of the No. 23 vehicle.[69]
Despite a front nose change at his pit stop, Castroneves retook the lead after Curran took over from Conway when the No. 5 car stopped. Castroneves was soon being gained on by Albuquerque who relieved Fittipaldi and the two drew alongside when Albuquerque used the extra torque of his car to get a better exit out of the turn three hairpin. Albuquerque then overtook Castroneves because the latter elected not to risk driving beside him entering the kink. Albuquerque opened up a five-second gap before handing back the lead to Castroneves ten minutes before the eighth hour ended on pit stop rotation.[69] Don Yount lost control of the No. 96 Turner Motorsports BMW M6's rear at the Bus Stop chicane and hit the tyre wall heavily. No caution was needed.[70] Soon after, Hanson's right-rear tyre blew turning into the Bus Stop chicane, significantly damaging his car's bodywork, requiring an engine cover and rear wing replacement and Alonso took over from him. Castroneves again lost the lead to Albuquerque when he overshot his pit box and was half a minute adrift into hour nine. Third-placed van der Zande picked up the No. 10 Wayne Taylor Racing's third right-rear puncture at the Bus Stop chicane; the carcass delaminated and deranged the car's bodywork and radiator line, forcing it into the garage for repairs and dropped ten laps to the overall leader.[63][70]
McMurry brought the No. 90 Spirit of Racing car into his garage with a misfiring engine and later retired. Tandy got past Antonio García's No. 3 Corvette but he clipped the curb at the Bus Stop chicane too hard and speared into the tyre barrier after losing control of his vehicle's rear leaving the turn. He returned back to the pit lane with heavy car damage. Another puncture happened as it turned January 28 when Nasr's right-rear tire failed but minimal car damage was sustained and he went to the pit lane for a replacement wheel.[63][70] The lead of GTD changed to Adam Christodoulou's No. 33 Riley Mercedes-AMG because the dominant No. 29 Land Motorsport Audi R8 of Schmidt was determined to have exceeded the maximum rate of permitted fuel flow (a balance of performance transgression) at his pit stops by IMSA who ordered the team to serve a stop-and-hold penalty plus five minutes.[71] The race's second full course yellow was activated for eighteen minutes when Roberto González was on his out-lap on cold tyres and went straight into the tyre barrier at the third corner.[63][70][71] Mustang Sampling Racing chose to change the brake discs on their No. 5 car during the caution, allowing Ricky Taylor and Pagenaud into first and second places overall.[70][71]
In GTD, Katherine Legge took over the class lead in the No. 86 Michael Shank Racing Acura NSX when the No. 33 Riley Mercedes-AMG was served a stop-and-hold penalty for speeding in the pit lane but lost it soon after to Perera's No. 48 Paul Miller Racing Lamborghini Huracán and Brekers took second place in the class for Grasser Racing Team. Meanwhile, the top four overall cars were separated by six seconds and a battle for second place was being contested by three cars.[70] Barbosa sidedrafted Pagenaud with fourth-placed Nasr slipstreaming both cars on the approach to the Bus Stop chicane. Nasr out-braked both vehicles and passed them for second overall. Graham Rahal was now driving the No.7 Penske Acura but was overtaken by Barbosa and Nasr. Ten hours and thirty-minutes in, Alonso drove No. 23 United Autosports car into the garage with a master brake cylinder failure and fell out of contention for a top ten finish. The trio of Barbosa, Nasr and Rahal were separated by one second with Pagenaud slightly drawing closer in fourth. Nasr lost second to Rahal in the eleventh hour and Pagenaud took the lead for a short while when they made pit stops for fuel. Rahal extended his advantage upfront as Barbosa and Nasr lost time on cold tyres but Pagenaud gained first when Rahal spun and stalled at turn one.[63][70][72]
Results
Class winners are denoted in bold.[73]
Notes
- ^ Tomy Drissi was listed at the beginning but he eventually withdrew for business committments.
References
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{{cite web}}: Unknown parameter|dead-url=ignored (|url-status=suggested) (help) - ^ Kilbey, Stephen (28 January 2018). "Conway Storms To Rolex 24 Lead After Six Hours". DailySportsCar. Retrieved 12 June 2018.
{{cite web}}: Unknown parameter|dead-url=ignored (|url-status=suggested) (help) - ^ a b Thompson, James (28 January 2018). "2018 Rolex 24 at Daytona: Hour 7 Update – Team Penske Acura Leads 1-2 After Pitstops". The Checkered Flag. Retrieved 12 June 2018.
{{cite web}}: Unknown parameter|dead-url=ignored (|url-status=suggested) (help) - ^ a b c d e f g Goodwin, Graham; Kilbey, Stephen (28 January 2018). "Through To Halfway, Cadillac & Acura Battle For The Lead". DailySportsCar. Retrieved 12 June 2018.
{{cite web}}: Unknown parameter|dead-url=ignored (|url-status=suggested) (help) - ^ a b c Pruett, Marshall (27 January 2018). "Rolex 24 Hour 10: Penske Acuras back on top; GTD leader penalized". Racer. Archived from the original on 28 January 2018. Retrieved 12 June 2018.
{{cite web}}: Unknown parameter|dead-url=ignored (|url-status=suggested) (help) - ^ Pruett, Marshall (28 January 2018). "Rolex 24 Hour 11: AXR back in front, No.23 in garage". Racer. Archived from the original on 28 January 2018. Retrieved 13 June 2018.
{{cite web}}: Unknown parameter|dead-url=ignored (|url-status=suggested) (help) - ^ "2018 24 Hours of Daytona - Race Provisional Results" (PDF). International Motor Sports Association. 28 January 2018. Archived from the original (PDF) on 29 January 2018. Retrieved 29 January 2018.
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