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2019 Oak Tree Grand Prix
Tenth round of the 2019 IMSA SportsCar Championship season

The 2019 Michelin GT Challenge at VIR was a sports car race sanctioned by the International Motor Sports Association (IMSA). The race was held at Virginia International Raceway in Alton, Virginia, on August 25, 2019. The race was the tenth round of the 2019 IMSA SportsCar Championship, and the sixth round of the WeatherTech Sprint Cup. Nick Tandy and Patrick Pilet won the race overall in the #911 Porsche GT Team Porsche 911 RSR leading home a 1-2 for Porsche who clinched the GTLM manufactures championship. In GTD, the #33 Mercedes-AMG Team Riley Motorsports of Ben Keating and Jeroen Bleekemolen took their first win of the season.

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Background

International Motor Sports Association's (IMSA) president Scott Atherton confirmed the race was part of the schedule for the 2019 IMSA SportsCar Championship (IMSA SCC) in August 2018.2 It was the sixth consecutive year the event was held as part of the WeatherTech SportsCar Championship. The 2019 Oak Tree Grand Prix was the tenth of twelve sports car races of 2019 by IMSA, and it was the sixth of seven rounds held as part of the WeatherTech Sprint Cup.3 The race was held at the seventeen-turn 3.270 mi (5.263 km) Virginia International Raceway in Alton, Virginia on August 25, 2019.4 As in previous years, it would be the second of two GT-only rounds of the IMSA SportsCar Championship, in which only the GTLM and GTD classes competed.5

On August 15, 2019, IMSA released a technical bulletin regarding the Balance of Performance for the race. In GT Le Mans, The Ford GT received a 5 kilogram weight increase, and gained 10 horsepower. The BMW M8 GTE received a 6.5 horsepower reduction and fuel capacity reduction of 1 liter. In GTD, the Audi R8 LMS GT3 Evo and Ferrari 488 GT3 were given weight reductions of 20 and 10 kilograms respectively, while the McLaren 720S GT3 got a fuel capacity reduction of 4 liters.6

Before the race, Earl Bamber and Laurens Vanthoor led the GTLM Drivers' Championship with 248 points, 14 points ahead of Patrick Pilet and Nick Tandy in second followed by Ryan Briscoe and Richard Westbrook with 230 points in third.7 In GTD, Mario Farnbacher and Trent Hindman led the Drivers' Championship with 209 points; the duo held a thirty-six point advantage over Bill Auberlen and Robby Foley in second.8 Porsche an Acura were leading their respective Manufacturers' Championships, while Porsche GT Team and Meyer Shank Racing each led their own Teams' Championships.9

Entries

Further information: 2019 IMSA SportsCar Championship § Entries

A total of 21 cars took part in the event split across two classes. 8 cars were entered in GTLM, and 13 in GTD. In GTD, Scott Hargrove returned to Pfaff Motorsports after Dennis Olsen and Matt Campbell filled in the previous two rounds.10 Due to a scheduling conflict for Christina Nielsen, who was at Suzuka International Racing Course for the Suzuka 10 Hours, was replaced by Alice Powell.11 Starworks Motorsport withdrew from the event following continued performance issues with its Audi R8 after competing at Road America.12 No changes happened in GTLM.

Practice

There were three practice sessions preceding the start of the race on Saturday, two on Friday and one on Saturday. The first session on Friday morning lasted one hour while the second session on Friday afternoon lasted one hour. The third on Saturday morning lasted one hour.13

Practice 1

The first practice session took place at 11:45 am ET on Friday and ended with Laurens Vanthoor topping the charts for Porsche GT Team, with a lap time of 1:41.296. Nick Tandy was second fastest in the sister No. 911 Porsche followed by Ryan Briscoe's No. 67 Ford GT in third position.14 Dirk Müller in the No. 66 Ford GT was fourth fastest and Jan Magnussen's No. 3 Corvette rounded out the top five.1516 The GTD class was topped by the No. 33 Mercedes-AMG Team Riley Motorsports Mercedes-AMG GT3 of Ben Keating with a time of 1:44.336. Patrick Long was second fastest in the No. 73 Park Place Motorsports Porsche followed by Andy Lally in the No. 44 Magnus Racing Lamborghini in third position.17

Pos.ClassNo.TeamDriverTimeGap
1GTLM912Porsche GT TeamLaurens Vanthoor1:41.296_
2GTLM911Porsche GT TeamNick Tandy1:41.435+0.139
3GTLM67Ford Chip Ganassi RacingRyan Briscoe1:41.478+0.182
Sources:1819

Practice 2

The second practice session took place at 4:30 PM ET on Friday and ended with Patrick Pilet topping the charts for Porsche GT Team, with a lap time of 1:41.234. Antonio García was second fastest in the No. 3 Corvette followed by Earl Bamber in the No. 912 Porsche in third.20 Richard Westbrook in the No. 67 Ford GT was fourth fastest and Jesse Krohn's No. 24 BMW rounded out the top five.21 The GTD class was topped by the No.14 AIM Vasser Sullivan Lexus RC F GT3 of Jack Hawksworth with a time of 1:43.783. Robby Foley was second fastest in the No. 96 BMW followed by Bryan Sellers in the No. 48 Paul Miller Racing Lamborghini in third position.22 The session was disrupted when the No. 44 Magnus Racing Lamborghini of Andy Lally stopped on track with a mechanical problem.23

Pos.ClassNo.TeamDriverTimeGap
1GTLM911Porsche GT TeamPatrick Pilet1:41.234_
2GTLM3Corvette RacingAntonio García1:41.324+0.090
3GTLM912Porsche GT TeamEarl Bamber1:41.337+0.103
Sources:2425

Practice 3

The third and final practice session took place at 8:35 am ET Saturday was held on a wet track. Vanthoor's No. 912 Porsche lapped fastest at 2:00.631, ahead of Nick Tandy in the No. 911 Porsche.26 Joey Hand was third in the No. 66 Ford GT followed by Connor De Phillippi's No. 25 BMW in fourth, and Magnussen's No. 3 Corvette rounded out the top five.27 GTD was led by Jeroen Bleekemolen's No. 33 Mercedes-AMG with a lap of 2:03.544. Lally was second-fastest and had the categories fastest time for most of the session.28 Richard Heistand was third fastest in the No. 14 Lexus followed by Toni Vilander's No. 63 Ferrari in fourth.29

Pos.ClassNo.TeamDriverTimeGap
1GTLM912Porsche GT TeamLaurens Vanthoor2:00.631_
2GTLM911Porsche GT TeamNick Tandy2:00.938+0.307
3GTLM66Ford Chip Ganassi RacingJoey Hand2:01.262+0.631
Sources:3031

Qualifying

Saturday's early afternoon qualifying session was divided into two groups that lasted 15 minutes each.32 Cars in GTD were sent out first and, after a ten-minute interval, GTLM vehicles drove onto the track. All cars were required to be driven by one participant and the starting order was determined by the competitor's fastest lap.33 IMSA then arranged the grid so that the GTLM field started in front of all GTD cars. The session took place on a damp track but dried out as it progressed.34

The first was for cars in the GTD class. Zacharie Robichon in the No. 9 Porsche was fastest on the car's final lap timed lap with a time of 1 minute and 45.826 seconds to clinch his second pole position of the season.3536 He was joined by Frankie Montecalvo's No. 12 Lexus on the grid's front row with his best lap being 0.324 seconds slower, and Richard Heistand drove the No. 14 AIM Vasser Sullivan Lexus to third place.3738 Trent Hindman qualified the No. 86 Acura fourth, ahead of Alice Powell's fifth placed Acura.39

The final session of qualifying was for cars in the GTLM class. Laurens Vanthoor in the No. 912 Porsche clinched his second pole position of the season. The No. 3 Corvette of Magnussen 0.078 seconds off the pace in second.40 The two Fords were third and fourth (the No. 67 car driven by Briscoe in front of the No. 66 vehicle of Hand).41 Oliver Gavin's No. 4 Corvette completed the top five category qualifiers.42 Tandy was sixth after spinning at turn twelve, and made contact with the barrier leaving damage on the left side.43 The two BMW Team RLL cars rounded out the GTLM field.44

Qualifying results

Pole positions in each class are indicated in bold and by ‡.

Pos.ClassNo.TeamDriverTimeGapGrid
1GTLM912 Porsche GT Team Laurens Vanthoor1.40.630_1 ‡
2GTLM3 Corvette Racing Jan Magnussen1.40.708+0.0782
3GTLM67 Ford Chip Ganassi Racing Ryan Briscoe1.40.786+0.1563
4GTLM66 Ford Chip Ganassi Racing Joey Hand1.40.956+0.3264
5GTLM4 Corvette Racing Oliver Gavin1.41.578+0.9485
6GTLM911 Porsche GT Team Nick Tandy1.41.615+0.9856
7GTLM24 BMW Team RLL John Edwards1.41.703+1.0737
8GTLM25 BMW Team RLL Connor De Phillippi1.41.772+1.7728
9GTD9 Pfaff Motorsports Zacharie Robichon1.45.826+5.1969‡
10GTD12 AIM Vasser Sullivan Frankie Montecalvo1.46.150+5.52010
11GTD14 AIM Vasser Sullivan Richard Heistand1.46.524+5.89411
12GTD86 Meyer Shank Racing with Curb-Agajanian Trent Hindman1.46.697+6.06712
13GTD57 Heinricher Racing w/Meyer Shank Racing Alice Powell1.48.159+7.52913
14GTD96 Turner Motorsport Robby Foley1.48.398+7.76814
15GTD33 Mercedes-AMG Team Riley Motorsports Ben Keating1.48.476+7.84615
16GTD44 Magnus Racing John Potter1.48.567+7.93716
17GTD48 Paul Miller Racing Corey Lewis1.51.132+10.502171
18GTD63 Scuderia Corsa Cooper MacNeil1.53.823+13.193182
19GTD76 Compass Racing Matt Plumb1.54.213+13.583193
20GTD74 Lone Star Racing Gar Robinson1.56.054+15.424204
21GTD73 Park Place Motorsports Patrick Lindsey1.56.158+15.528215
Sources:4546
  • 1 The No. 48 Paul Miller Racing entry was moved to the back of the GTD field for change tires during qualifying.47
  • 2 The No. 63 Scuderia Corsa entry was moved to the back of the GTD field for change tires during qualifying.48
  • 3 The No. 76 Compass Racing entry was moved to the back of the GTD field for change tires during qualifying.49
  • 4 The No. 74 Lone Star Racing entry was moved to the back of the GTD field for change tires during qualifying.50
  • 5 The No. 73 Park Place Motorsports entry was moved to the back of the GTD field for change tires during qualifying.51

Race

Post-race

The final results of GTLM kept Bamber and Vanthoor atop the Drivers' Championship with 280 points, but their advantage had been reduced by three as the victory of Pilet and Tandy meant the two drivers were eleven points behind. García and Magnussen's strong result allowed the duo to move into third while Briscoe and Westbrook fell to fourth as a result of finishing in fifth place.52 The final results of GTD meant Farnbacher and Hindman extended their advantage to 37 points as Robichon took over second position. Montecalvo and Bell advanced from fifth to fourth while Auberlen and Foley dropped from second to third.53 Porsche and Acura continued to top their respective Manufacturers' Championships, while Porsche GT Team and Meyer Shank Racing kept their respective advantages in their Teams' Championships with two rounds left in the season.54

Race Results

Class winners are denoted in bold and ‡.

PosClassNo.TeamDriversChassisLapsTime/Retired
Engine
1GTLM911 Porsche GT Team Patrick Pilet Nick TandyPorsche 911 RSR882:41:28.773 ‡
Porsche 4.0 L Flat-6
2GTLM912 Porsche GT Team Earl Bamber Laurens VanthoorPorsche 911 RSR88+0.737s
Porsche 4.0 L Flat-6
3GTLM3 Corvette Racing Antonio García Jan MagnussenChevrolet Corvette C7.R88+3.275s
Chevrolet LT5.5 5.5 L V8
4GTLM4 Corvette Racing Oliver Gavin Tommy MilnerChevrolet Corvette C7.R88+3.972s
Chevrolet LT5.5 5.5 L V8
5GTLM67 Ford Chip Ganassi Racing Ryan Briscoe Richard WestbrookFord GT88+4.396s
Ford EcoBoost 3.5 L Turbo V6
6GTLM66 Ford Chip Ganassi Racing Joey Hand Dirk MüllerFord GT88+9.556s
Ford EcoBoost 3.5 L Turbo V6
7GTLM25 BMW Team RLL Tom Blomqvist Connor De PhillippiBMW M8 GTE88+12.560s
BMW S63 4.0 L Twin-turbo V8
8GTLM24 BMW Team RLL John Edwards Jesse KrohnBMW M8 GTE87+1 laps
BMW S63 4.0 L Twin-turbo V8
9GTD33 Mercedes-AMG Team Riley Motorsports Jeroen Bleekemolen Ben KeatingMercedes-AMG GT386+2 laps
Mercedes-AMG M159 6.2 L V8
10GTD86 Meyer Shank Racing with Curb-Agajanian Mario Farnbacher Trent HindmanAcura NSX GT3 Evo86+2 laps
Acura 3.5 L Turbo V6
11GTD63 Scuderia Corsa Cooper MacNeil Toni VilanderFerrari 488 GT386+2 laps
Ferrari F154 3.9 L Turbo V8
12GTD9 Pfaff Motorsports Scott Hargrove Zacharie RobichonPorsche 911 GT3 R86+2 laps
Porsche 4.0 L Flat-6
13GTD73 Park Place Motors Patrick Long Patrick LindseyPorsche 911 GT3 R86+2 laps
Porsche 4.0 L Flat-6
14GTD44 Magnus Racing Andy Lally John PotterLamborghini Huracán GT3 Evo86+2 laps
Lamborghini 5.2 L V10
15GTD12 AIM Vasser Sullivan Townsend Bell Frankie MontecalvoLexus RC F GT386+2 laps
Lexus 5.0 L V8
16GTD74 Lone Star Racing Lawson Aschenbach Gar RobinsonMercedes-AMG GT386+2 laps
Mercedes-AMG M159 6.2 L V8
17GTD76 Compass Racing Paul Holton Matt PlumbMcLaren 720S GT386+2 laps
McLaren M480T 4.0 L Twin-turbo V8
18GTD48 Paul Miller Racing Corey Lewis Bryan SellersLamborghini Huracán GT3 Evo84+4 laps
Lamborghini 5.2 L V10
19GTD96 Turner Motorsport Bill Auberlen Robby FoleyBMW M6 GT383+5 laps
BMW 4.4 L Turbo V8
20

DNF

GTD57 Heinricher Racing w/Meyer Shank Racing Katherine Legge Alice PowellAcura NSX GT3 Evo74Crash
Acura 3.5 L Turbo V6
21

DNF

GTD14 AIM Vasser Sullivan Jack Hawksworth Richard HeistandLexus RC F GT363Electrical
Lexus 5.0 L V8
Sources:5556

Standings after the race

DPi Drivers' Championship standings
Pos.+/–DriverPoints
1 Dane Cameron Juan Pablo Montoya239
2 Pipo Derani Felipe Nasr232
3 Jonathan Bomarito222
4 Hélio Castroneves Ricky Taylor222
5 Oliver Jarvis Tristan Nunez218
Source:57
LMP2 Drivers' Championship standings
Pos.+/–DriverPoints
1 Matt McMurry200
2 Cameron Cassels195
3 1 Kyle Masson163
4 Gabriel Aubry95
5 Eric Lux70
Source:58
GTLM Drivers' Championship standings
Pos.+/–DriverPoints
1 Earl Bamber Laurens Vanthoor280
2 Patrick Pilet Nick Tandy269
3 1 Antonio García Jan Magnussen259
4 1 Ryan Briscoe Richard Westbrook256
5 Dirk Müller248
Source:59
GTD Drivers' Championship standings
Pos.+/–DriverPoints
1 Mario Farnbacher Trent Hindman241
2 1 Zacharie Robichon204
3 1 Bill Auberlen Robby Foley203
4 1 Frankie Montecalvo Townsend Bell196
5 1 Andy Lally John Potter196
Source:60
  • Note: Only the top five positions are included for all sets of standings.
DPi Teams' Championship standings
Pos.+/–TeamPoints
1 #6 Acura Team Penske239
2 #31 Whelen Engineering Racing232
3 #55 Mazda Team Joest222
4 #7 Acura Team Penske222
5 #77 Mazda Team Joest218
Source:61
LMP2 Teams' Championship standings
Pos.+/–TeamPoints
1 #52 PR1/Mathiasen Motorsports200
2 #38 Performance Tech Motorsports195
3 #18 DragonSpeed35
4 #81 DragonSpeed30
Source:62
GTLM Teams' Championship standings
Pos.+/–TeamPoints
1 #912 Porsche GT Team280
2 #911 Porsche GT Team269
3 1 #3 Corvette Racing259
4 1 #67 Ford Chip Ganassi Racing256
5 #66 Ford Chip Ganassi Racing248
Source:63
GTD Teams' Championship standings
Pos.+/–TeamPoints
1 #86 Meyer-Shank Racing with Curb Agajanian241
2 1 #9 Pfaff Motorsports204
3 1 #96 Turner Motorsport203
4 1 #12 AIM Vasser Sullivan196
5 1 #44 Magnus Racing196
Source:64
  • Note: Only the top five positions are included for all sets of standings.
DPi Manufacturers' Championship standings
Pos.+/–ManufacturerPoints
1 Acura262
2 Cadillac257
3 Mazda251
4 Nissan230
Source:65
GTLM Manufacturers' Championship standings
Pos.+/–ManufacturerPoints
1 Porsche304
2 Ford278
3 Chevrolet272
4 BMW265
5 Ferrari32
Source:66
GTD Manufacturers' Championship standings
Pos.+/–ManufacturerPoints
1 Acura242
2 Lamborghini234
3 1 Porsche231
4 1 Lexus230
5 BMW218
Source:67
  • Note: Only the top five positions are included for all sets of standings.

References

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