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BoP Lab / Classes / GT1

GT1 pace at every track

Lap times across years say as much about the weather as the class. % of the field is each class's best lap as a share of the field's on the same day (every class that ran that day but the ones shown, each scaled by its usual pace against SM and averaged, with each shown class's own track character taken out, so one figure reads the same across years and tracks), so the conditions drop out: 100% is level, less is quicker, and a move in it is the class getting faster or slower against the field.

Class · click a class to switch, + to compare alongside (up to 4)
Series
Reference · what % is measured against, 12 eventsall classes that day, as if at an average track
Tracks · untick to narrow

Closest to the field: GT1 78.4% of the field Tony Ave, Virginia International Raceway Runoffs 2019 qualifying

1:201:301:401:502:002:106 rule changes between Runoffs 2018 and Runoffs 20196 ▾12 rule changes between Runoffs 2019 and Runoffs 202012 ▾1 rule change between Runoffs 2020 and Runoffs 20211 ▾6 rule changes between Runoffs 2021 and Runoffs 20226 ▾7 rule changes between Runoffs 2022 and Runoffs 20237 ▾8 rule changes between Runoffs 2023 and Runoffs 20248 ▾7 rule changes between Runoffs 2024 and Runoffs 20257 ▾9 rule changes between Runoffs 2025 and Runoffs 20269 ▾GT1 race best at Runoffs 2015: 1:47.116 (Michael Lewis)GT1 race best at Runoffs 2016: 1:22.866 (Michael Lewis)GT1 race best at Runoffs 2017: 1:36.187 (Cliff Ebben)GT1 race best at Runoffs 2018: 1:37.516 (Michael Lewis)GT1 race best at Runoffs 2019: 1:48.562 (Tony Ave)GT1 race best at Runoffs 2020: 2:05.282 (Ernie Francis Jr)GT1 race best at Runoffs 2021: 1:53.220 (David Pintaric)Off the chart: GT1 race best at Runoffs 2022: 2:18.094 (David Pintaric)GT1 race best at Runoffs 2024: 2:06.893 (Dave Ruehlow)GT1 race best at Runoffs 2025: 2:04.058 (Tony Ave)GT1 race best at Runoffs 2026: 2:04.611 (Tony Ave)GT1 qualifying best at Runoffs 2015: 1:44.244 (Michael Lewis)GT1 qualifying best at Runoffs 2016: 1:21.927 (Cliff Ebben)GT1 qualifying best at Runoffs 2017: 1:36.008 (David Pintaric)GT1 qualifying best at Runoffs 2018: 1:35.673 (Michael Lewis)GT1 qualifying best at Runoffs 2019: 1:43.857 (Tony Ave)GT1 qualifying best at Runoffs 2020: 2:02.936 (Ernie Francis Jr)GT1 qualifying best at Runoffs 2021: 1:35.279 (Michael Lewis)GT1 qualifying best at Runoffs 2022: 1:46.808 (David Pintaric)GT1 qualifying best at Runoffs 2023: 1:48.203 (David Pintaric)GT1 qualifying best at Runoffs 2024: 2:02.535 (Dave Ruehlow)GT1 qualifying best at Runoffs 2025: 2:01.273 (Tony Ave)GT1 qualifying best at Runoffs 2026: 2:02.981 (Tony Ave)Daytona International Speedway · Runoffs 2015R2015Mid-Ohio Sports Car Course · Runoffs 2016R2016Indianapolis Motor Speedway · Runoffs 2017R2017Sonoma Raceway · Runoffs 2018R2018Virginia International Raceway · Runoffs 2019R2019Road America · Runoffs 2020R2020Indianapolis Motor Speedway · Runoffs 2021R2021Virginia International Raceway · Runoffs 2022R2022Virginia International Raceway · Runoffs 2023R2023Road America · Runoffs 2024R2024Road America · Runoffs 2025R2025Road America · Runoffs 2026R2026
GT1solid race · dashed qualifying · slower is lowerRoad AmericaVirginia International RacewayIndianapolis Motor SpeedwayDaytona International SpeedwayMid-Ohio Sports Car CourseSonoma Raceway
80%85%90%95%6 rule changes between Runoffs 2018 and Runoffs 20196 ▾12 rule changes between Runoffs 2019 and Runoffs 202012 ▾1 rule change between Runoffs 2020 and Runoffs 20211 ▾6 rule changes between Runoffs 2021 and Runoffs 20226 ▾7 rule changes between Runoffs 2022 and Runoffs 20237 ▾8 rule changes between Runoffs 2023 and Runoffs 20248 ▾7 rule changes between Runoffs 2024 and Runoffs 20257 ▾9 rule changes between Runoffs 2025 and Runoffs 20269 ▾GT1 race best at Runoffs 2015: 80.2% of Field's (Michael Lewis)GT1 race best at Runoffs 2016: 80.3% of Field's (Michael Lewis)GT1 race best at Runoffs 2017: 81.2% of Field's (Cliff Ebben)GT1 race best at Runoffs 2018: 82.2% of Field's (Michael Lewis)GT1 race best at Runoffs 2019: 79.9% of Field's (Tony Ave)GT1 race best at Runoffs 2020: 80.6% of Field's (Ernie Francis Jr)GT1 race best at Runoffs 2021: 94.0% of Field's (David Pintaric)GT1 race best at Runoffs 2022: 93.6% of Field's (David Pintaric)GT1 race best at Runoffs 2024: 82.7% of Field's (Dave Ruehlow)GT1 race best at Runoffs 2025: 80.2% of Field's (Tony Ave)GT1 race best at Runoffs 2026: 80.9% of Field's (Tony Ave)GT1 qualifying best at Runoffs 2015: 78.7% of Field's (Michael Lewis)GT1 qualifying best at Runoffs 2016: 80.4% of Field's (Cliff Ebben)GT1 qualifying best at Runoffs 2017: 81.7% of Field's (David Pintaric)GT1 qualifying best at Runoffs 2018: 83.8% of Field's (Michael Lewis)GT1 qualifying best at Runoffs 2019: 78.4% of Field's (Tony Ave)GT1 qualifying best at Runoffs 2020: 79.8% of Field's (Ernie Francis Jr)GT1 qualifying best at Runoffs 2021: 81.2% of Field's (Michael Lewis)GT1 qualifying best at Runoffs 2022: 80.8% of Field's (David Pintaric)GT1 qualifying best at Runoffs 2023: 81.5% of Field's (David Pintaric)GT1 qualifying best at Runoffs 2024: 80.2% of Field's (Dave Ruehlow)GT1 qualifying best at Runoffs 2025: 79.0% of Field's (Tony Ave)GT1 qualifying best at Runoffs 2026: 79.9% of Field's (Tony Ave)Daytona International Speedway · Runoffs 2015R2015Mid-Ohio Sports Car Course · Runoffs 2016R2016Indianapolis Motor Speedway · Runoffs 2017R2017Sonoma Raceway · Runoffs 2018R2018Virginia International Raceway · Runoffs 2019R2019Road America · Runoffs 2020R2020Indianapolis Motor Speedway · Runoffs 2021R2021Virginia International Raceway · Runoffs 2022R2022Virginia International Raceway · Runoffs 2023R2023Road America · Runoffs 2024R2024Road America · Runoffs 2025R2025Road America · Runoffs 2026R2026
GT1solid race · dashed qualifying · each class's best lap as a share of the field's at the same event (the field index, changeable above); 100% is level, less is quicker, so up the chart is quickerRoad AmericaVirginia International RacewayIndianapolis Motor SpeedwayDaytona International SpeedwayMid-Ohio Sports Car CourseSonoma Raceway
EventGT1
Qual best Race best Trap % of the field 
Road America Runoffs 20262026-09-282:02.981Tony Ave · fastest of 12 · top 5 within 4.6s+1.708s (+1.41%)2:04.611Tony Ave · fastest of 12 · top 5 within 3.9s+0.553s (+0.45%)177.9Tony Ave-2.7 mph (-1.5%)80.9%qual 79.9%
9 rule changes (GT1: 9)4 weight · 2 cars added · 1 removed · 2 othershowhide
  • Request TA Cup Cars Into GT1 #40250other
  • Request TA Cup Cars Into GT1 #40250cars added
  • Lamborghini Huracan Super Trofeo in GT1 #40288cars added
  • Request for Huracan GT3 Evo Weight Reduction to 2950lbs #40147weight -50 lbs
  • Reduce Weight for GM 275ci Carbureted V6s #39713weight
  • Remove GT3U from GCR as it is now in STU #39862removed
  • Request for Addition of Porsche 992.1 GT3 Cup into GT1 #39322other
  • NSX Parity With Other GT3s Let Alone a GT1 Car #39311weight -100 lbs
  • RM 25-06 GT1 reclassify the Acura NSX GT3 EVO 22 to GT1-ST #39101weight
Road America Runoffs 20252025-09-292:01.273Tony Ave · fastest of 14 · top 5 within 7.7s-1.262s (-1.03%)2:04.058Tony Ave · fastest of 12 · top 5 within 5.8s-2.835s (-2.23%)180.6Dave Ruehlow-0.4 mph (-0.2%)80.2%qual 79.0%
7 rule changes (GT1: 7)2 cars added · 2 engine · 1 aero · 1 induction · 1 weightshowhide
  • Correction to Limited prep LS Chevy engine for GT1 #38902engine
  • Request to Classify Acura NSX GT3 Evo 22 #37367cars added
  • Addition of a limited prep LS Chevy engine for GT1 #37045engine
  • Correct language regarding OEM Areo Devices #37137aero
  • GT1-ST Adjustments #37481weight
  • Lamborghini Huracan GT3 Evo Restrictor Help #36254induction
  • Request to Classify Mazda 26B Engine #36230cars added
Road America Runoffs 20242024-10-012:02.535Dave Ruehlow · fastest of 10 · top 5 within 4.6s-0.401s (-0.33%)2:06.893Dave Ruehlow · fastest of 6 · top 5 within 50.8s+1.611s (+1.29%)181.0Dave Ruehlow+0.5 mph (+0.3%)82.7%qual 80.2%
8 rule changes (GT1: 8)3 engine · 2 weight · 1 aero · 1 cars added · 1 othershowhide
  • Request for Spec Line 1010 Reconsideration #35009weight +300 lbs
  • Camaro 1993- and 2010- #35652other
  • Rear Blade Spoiler Clarification #35261aero
  • GT Direct Injection allowance and rules #35437engine
  • GT2/3 remove Direction Injection not allowed in Spec line notes #35439engine
  • Request for Acceptance of Lamborghini Huracan GT3 in GT1-ST #34929cars added
  • Cylinder heads #35040engine
  • Errors in GTCS Headings and Use of the Terms Category and ClassChange existing GTL and GTA Rules #34453weight
Virginia International Raceway Runoffs 20232023-09-231:48.203David Pintaric · fastest of 5 · top 5 within 22.4s+1.395s (+1.31%)178.1David Pintaric-3.6 mph (-2.0%)81.5% qual
7 rule changes (GT1: 7)3 weight · 2 cars added · 1 induction · 1 othershowhide
  • Please classify Fields Cardinal V8 #33784cars added
  • Mercedes AMG GT3 Notes #33804other
  • Sequential Transmission Weight Penalty #33503weight
  • GT1 Porsche 992 #33730cars added
  • GT2 (TA2)/GTA Part Number Update #33315induction
  • Request to Reduce Trans Am Bodywork Weight Penalty #33331weight
  • Request for Reduction in FR9 Weight Penalty #33332weight
Virginia International Raceway Runoffs 20222022-09-241:46.808David Pintaric · fastest of 8 · top 5 within 3.7s+2.951s (+2.84%)2:18.094David Pintaric · fastest of 7 · top 5 within 13.7s+29.532s (+27.20%)181.7Adam Romito-1.5 mph (-0.8%)93.6%qual 80.8%
6 rule changes (GT1: 6)2 cars added · 2 tyres & wheels · 1 suspension & brakes · 1 weightshowhide
  • Tail lights on all GT category race cars. #32799suspension & brakes
  • GT-1/TransAm rules simplification/modernizing #32763weight
  • Mercedes Benz AMG GT3 in GT1 #31883cars added
  • Wheel Widths #32205tyres & wheels
  • Wheel Widths #31844tyres & wheels
  • Request car classification #31032cars added
Indianapolis Motor Speedway Runoffs 20212021-09-251:35.279Michael Lewis · fastest of 20 · top 5 within 0.6s-0.729s (-0.76%)1:53.220David Pintaric · fastest of 14 · top 5 within 3.8s+17.033s (+17.71%)180.2Tom Smith94.0%qual 81.2%
1 rule change (GT1: 1)1 wordingshowhide
  • Request to Update GTA Obsolete Part Numbers #30615wording
Road America Runoffs 20202020-10-022:02.936Ernie Francis Jr · fastest of 16 · top 5 within 3.4s2:05.282Ernie Francis Jr · fastest of 16 · top 5 within 3.4s180.5Simon Gregg80.6%qual 79.8%
12 rule changes (GT1: 12)4 aero · 2 cars added · 2 weight · 1 engine · 1 induction · 2 othershowhide
  • GT Category Wording #29193induction
  • Request to Allow New Trans Am Legal Engines in GT1 #29002engine
  • TA2 Gurney flap wicker clarification #28874aero
  • STO Gurney flap wicker clarification #28883aero
  • GT1 Gurney flap wicker clarification #28886aero
  • GT Gurney flap wicker clarification #28909aero
  • Windshield Clips #27323other
  • Request to classify the Ford Coyote 3rd Gen OEM #27146cars added
  • Request Factory Five Daytona coupe classification #26308cars added
  • Request to Adjust Transmission Penalty #27750weight
  • Request to Reduce Additional Weight for 18 #27751weight
  • Request for Five Star Nascar Compliant Bodywork #27756other
Virginia International Raceway Runoffs 20192019-10-051:43.857Tony Ave · fastest of 12 · top 5 within 3.9s1:48.562Tony Ave · fastest of 11 · top 5 within 11.4s183.2Tony Ave79.9%qual 78.4%
6 rule changes (GT1: 6)3 cars added · 1 aero · 1 engine · 1 suspension & brakesshowhide
  • Request to classify Porsche 944/968 #26242cars added
  • Clarify Trans Am Legal Bodywork and Wing #26953aero
  • Request GTX Fuel injection for previous GT-1 tube frame cars #26141engine
  • Request to Classify Ligier JS2 R #26535cars added
  • Request Ride Height Clarification #26600suspension & brakes
  • GTX Homologation table update #26034cars added
Sonoma Raceway Runoffs 20182018-10-101:35.673Michael Lewis · fastest of 8 · top 5 within 7.1s1:37.516Michael Lewis · fastest of 7 · top 5 within 5.3s111.6Preston Calvert82.2%qual 83.8%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:36.008David Pintaric · fastest of 17 · top 5 within 2.2s1:36.187Cliff Ebben · fastest of 16 · top 5 within 1.5s81.2%qual 81.7%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:21.927Cliff Ebben · fastest of 8 · top 5 within 2.5s1:22.866Michael Lewis · fastest of 7 · top 5 within 2.1s80.3%qual 80.4%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-211:44.244Michael Lewis · fastest of 11 · top 5 within 7.8s1:47.116Michael Lewis · fastest of 7 · top 5 within 8.3s80.2%qual 78.7%

By track

TrackEvents Typical % of the field Best Latest 
Road America480.6%80.2%Runoffs 202580.9%Runoffs 2026
Virginia International Raceway381.5%79.9%Runoffs 201981.5%Runoffs 2023
Indianapolis Motor Speedway281.2%81.2%Runoffs 201794.0%Runoffs 2021
Daytona International Speedway180.2%80.2%Runoffs 201580.2%Runoffs 2015
Mid-Ohio Sports Car Course180.3%80.3%Runoffs 201680.3%Runoffs 2016
Sonoma Raceway182.2%82.2%Runoffs 201882.2%Runoffs 2018
About this data
Every event the class ran, at any track, oldest to newest on the chart and newest first in the table. Each point is the class's best lap as a share of the field's best on the same day (every class that ran that day but the ones shown, each scaled by its usual pace against SM and averaged, with each shown class's own track character taken out, so one figure reads the same across years and tracks): the weather and the day cancel out, so one figure compares across years where lap times cannot, and across tracks too, since the class's own character at each track is taken out. A track with only one or two events on record is corrected less, since there is less to go on. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.