BoP Lab / Classes / GT3

GT3 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 Runoffs Super Tour Both

Reference · what % is measured against, 10 eventsall classes that day, as if at an average track

Tracks · untick to narrow Auto Club Speedway Blackhawk Farms Raceway Buttonwillow Raceway Park Circuit of St. Louis (formerly Gateway Motorsports Circuit of the Americas Daytona International Speedway Grattan Raceway Hallett Motor Racing Circuit Homestead-Miami Speedway Indianapolis Motor Speedway Laguna Seca Michelin Raceway Road Atlanta Mid-Ohio Sports Car Course New Jersey Motorsports Park NOLA Motorsports Park Pacific Raceways Pittsburgh International Race Complex Portland International Raceway Road America Sebring International Raceway Sonoma Raceway Summit Point Raceway Thunderhill Raceway Park Virginia International Raceway Watkins Glen International Willow Springs Raceway World Wide Technology Raceway

Closest to the field: GT3 88.3% of the field Tony Ave, Virginia International Raceway Runoffs 2019 race

% of the fieldLap times

GT3solid race · dashed qualifying · slower is lowerVirginia International RacewayIndianapolis Motor SpeedwayRoad AmericaDaytona International SpeedwayMid-Ohio Sports Car CourseSonoma Raceway

GT3solid 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 quickerVirginia International RacewayIndianapolis Motor SpeedwayRoad AmericaDaytona International SpeedwayMid-Ohio Sports Car CourseSonoma Raceway

	Event	GT3
	Event	Qual best	Race best	Trap	% of the field
	Road America Runoffs 20242024-10-01	2:22.108Tony Ave · fastest of 13 · top 5 within 3.7s+0.226s (+0.16%)	2:22.863Tony Ave · fastest of 13 · top 5 within 3.3s-1.368s (-0.95%)	151.2Jeff Dernehl+1.8 mph (+1.2%)	89.9%qual 89.8%
30 rule changes (GT3: 30)9 engine · 9 weight · 4 cars added · 3 induction · 1 aero · 1 removed · 1 tyres & wheels · 2 wordingshowhide 2024-09-01 2024 Mazda 3 TC request for GT3 #36517cars added 2024-08-01 Adding Datsun B110 to List of Approved Cars #36198cars added 2024-08-01 Honda Civic Type R TCR Weight Reduction Request #36550weight 2024-07-01 Correct missed Disenfranchised weight reduction #36237weight 2024-07-01 errors & omissions on GT3 Mazda MZR spec lines #36241removed 2024-06-01 GT3 +1mm SIR add 175lbs. In #36098induction 2024-06-01 Revised GT3 Built Turbocharged chart #36100induction 2024-05-01 Request for Spec Line 1010 Reconsideration #35009weight +300 lbs 2024-05-01 Mazda MZR Engines #35753engine 2024-05-01 Disenfranchised GT2 Acura RSX to Run GT3 #35773weight 2024-05-01 Toyota 4Y Engine Request #35885engine 2024-05-01 GT3 spec lines clean-up #36008wording 2024-05-01 GT3 Honda spec line clean-up x 2 #36009engine 2024-05-01 GT3 Mazda spec line clean-up x2 #36010wording 2024-03-01 Miata Turbo Clarification #35386induction +100 lbs 2024-02-01 Rear Blade Spoiler Clarification #35261aero 2024-02-01 GT Direct Injection allowance and rules #35437engine 2024-02-01 Request to Include Toyota FA24D Engine for use in GT3 #35199engine 2024-02-01 GT2/3 remove Direction Injection not allowed in Spec line notes #35439engine 2024-02-01 Edit GT3 Nissan QR25DE/DD spec line #35442engine 2024-01-01 Disenfranchised GT2 RX7. #35028weight 2024-01-01 Turbo Help #35042weight -100 lbs 2024-01-01 Competition Adjustment Request for 13B Peripheral Port #35100weight -100 lbs 2024-01-01 Request to Include Toyota GR 86 in GT3 #35197cars added 2024-01-01 Fastrack Toyota 3S Correction #35258engine 2023-12-01 Toyota Engine Classification Request #35019engine 2023-12-01 GT3 2.0L SIR & weight #35171weight 2023-12-01 Errors in GTCS Headings and Use of the Terms Category and ClassChange existing GTL and GTA Rules #34453weight 2023-11-01 GT3 TCR 200 TW tires #34993tyres & wheels 2023-10-01 Classify Honda B20 engine in GT3 CRX #34781cars added
	Virginia International Raceway Runoffs 20232023-09-23	1:58.065Tony Ave · fastest of 9 · top 5 within 3.8s+0.930s (+0.79%)	1:59.872Tony Ave · fastest of 8 · top 5 within 3.9s-24.475s (-16.96%)	145.8Jeff Dernehl-3.6 mph (-2.4%)	90.1%qual 89.5%
10 rule changes (GT3: 10)3 engine · 3 induction · 2 tyres & wheels · 1 cars added · 1 weightshowhide 2023-08-01 Addendum to letter 33913, GT3 DOT tires. #34627tyres & wheels 2023-05-01 Please classify Fields Cardinal V8 #33784cars added 2023-01-01 Remove Nissan VG30 engine from GT3 #33609engine 2023-01-01 GT3 Choke option effective 1-01-2023 #33669induction 2023-01-01 GT3 2.0L choke/weight option #33670weight 2022-12-01 Turbocharged Engine Rules #33145induction 2022-12-01 GT2 (TA2)/GTA Part Number Update #33315induction 2022-12-01 GT3 Nissian SR20VET unrestricted ECU change #33432engine 2022-11-01 Add 84-87 Civic #33091tyres & wheels 2022-10-01 GT3 Turbo Displacement Clarification #32952engine
	Virginia International Raceway Runoffs 20222022-09-24	1:57.135Jeff Dernehl · fastest of 13 · top 5 within 3.2s-1.059s (-0.90%)	2:24.347Tony Ave · fastest of 12 · top 5 within 8.2s+25.302s (+21.25%)	149.5Jeff Dernehl-0.2 mph (-0.1%)	98.3%qual 89.3%
17 rule changes (GT3: 17)9 cars added · 2 engine · 2 weight · 1 aero · 1 suspension & brakes · 1 tyres & wheels · 1 wordingshowhide 2022-09-01 Tail lights on all GT category race cars. #32799suspension & brakes 2022-08-01 SR20VET Engine Option Request #32648engine 2022-07-01 Correct Model GT3 - Fiat #32776wording 2022-06-01 Correct Fiat Spider Years #32149cars added 2022-05-01 wheel size addition #32247tyres & wheels 2022-04-01 GT3 TCR Car Feedback #31677weight +2 lbs 2022-03-01 Request to Classify Ginetta G40 in GT3 #31598cars added 2022-03-01 Normally Aspirated 2.0L DOHC MZR Motor #31733cars added 2022-03-01 Volvo S60 in GT3 #31970cars added 2022-03-01 GT3 2.0L 4V engines now unrestricted. #32190engine 2022-03-01 TB correction to wing wording #32191aero 2022-02-01 Request to add Fiat to GT3 CARS #31803cars added 2022-02-01 Request to add Fiat to GT3 CARS #31804cars added 2021-12-01 31032 correction to weight #31525weight -210 lbs 2021-12-01 Add TCR cars to GT3 #31540cars added 2021-11-01 Please approve 1964-1968 Ford Cortina GT for competition in GT# #30941cars added 2021-10-01 Request car classification #31032cars added
	Indianapolis Motor Speedway Runoffs 20212021-09-25	1:44.758Troy Ermish · fastest of 14 · top 5 within 4.6s+0.179s (+0.17%)	1:46.694Troy Ermish · fastest of 13 · top 5 within 4.1s+0.364s (+0.34%)	145.8Stacy Wilson	88.9%qual 90.2%
6 rule changes (GT3: 6)3 induction · 1 cars added · 1 wording · 1 othershowhide 2021-08-01 Request to Update GTA Obsolete Part Numbers #30615wording 2021-07-01 Request to Permit FP cars in GT3 #30611other 2021-05-01 Mazda MZR 2.0L Engine #30455induction 2021-05-01 Disfranchised GT3 Mazda, correct choke size #30570induction 2020-12-01 Mazda MZR SIR Sizing #29555induction 2020-12-01 Request to Classify 1992-1997 Honda Prelude #29687cars added
	Road America Runoffs 20202020-10-02	2:21.882Michael Lewis · fastest of 12 · top 5 within 3.0s	2:24.231Tony Ave · fastest of 12 · top 5 within 3.0s	149.5Jeff Dernehl	89.6%qual 89.0%
17 rule changes (GT3: 17)6 induction · 4 aero · 4 cars added · 1 engine · 1 weight · 1 othershowhide 2020-09-01 GT Category Wording #29193induction 2020-07-01 Request to add Mazda 12A Peripheral Port to GT3 rule set #28842cars added 2020-07-01 TA2 Gurney flap wicker clarification #28874aero 2020-07-01 STO Gurney flap wicker clarification #28883aero 2020-07-01 GT Gurney flap wicker clarification #28909aero 2020-07-01 GT3 4v SIR size increase. #28931induction 2020-07-01 Request for Addition to GT3 Approved Turbo List #27576induction 2020-06-01 Request Nissan KA24E specifications #28808weight 2020-03-01 Error Regarding Mazda Engine Listing #28119engine +245 lbs 2020-02-01 Windshield Clips #27323other 2020-01-01 Request Factory Five Daytona coupe classification #26308cars added 2020-01-01 Request restrictor size change request #26958induction 2020-01-01 Request to Classify Alfa Romeo 4C #27322cars added 2020-01-01 Request for Mazda 2.5l MZR/L5-VE #27570induction -245 lbs 2020-01-01 GT3 turbo engines add Honda #28033induction 2020-01-01 GT3 wing end plate #28035aero 2019-12-01 Request to Add SR16VE to GT-3 Spec Lines #27357cars added
	Virginia International Raceway Runoffs 20192019-10-05	1:58.194Michael Lewis · fastest of 17 · top 5 within 2.2s	1:59.045Tony Ave · fastest of 16 · top 5 within 1.7s	149.6Jeff Dernehl	88.3%qual 90.0%
8 rule changes (GT3: 8)3 cars added · 2 weight · 1 engine · 1 induction · 1 suspension & brakesshowhide 2019-08-31 Requesting Increase in Choke Diameter for Mazda 12A Bridgeport #27043induction 2019-05-01 Request GTX Fuel injection for previous GT-1 tube frame cars #26141engine 2019-05-01 Request to Classify Ligier JS2 R #26535cars added 2019-04-01 26076 revised Spec line chart #26528weight 2019-04-01 Request Ride Height Clarification #26600suspension & brakes 2019-03-01 Request clarification on bridge porting for rotary #26076weight 2019-03-01 Request to add 4G69 Mitsubishi #26154cars added 2019-01-01 GTX Homologation table update #26034cars added
	Sonoma Raceway Runoffs 20182018-10-10	1:40.947Michael Lewis · fastest of 10 · top 5 within 3.8s	1:42.634Michael Lewis · fastest of 8 · top 5 within 4.4s	115.7Collin Jackson	88.7%qual 90.7%
No rule changes on record between these events
	Indianapolis Motor Speedway Runoffs 20172017-09-25	1:44.579Collin Jackson · fastest of 17 · top 5 within 5.0s	1:46.330Collin Jackson · fastest of 15 · top 5 within 3.1s		90.6%qual 89.8%
No rule changes on record between these events
	Mid-Ohio Sports Car Course Runoffs 20162016-09-19	1:30.797Gary Bockman · fastest of 15 · top 5 within 2.0s	1:31.107Joe Kristensen · fastest of 14 · top 5 within 2.5s		89.4%qual 90.2%
No rule changes on record between these events
	Daytona International Speedway Runoffs 20152015-09-21	2:01.736Joe Kristensen · fastest of 11 · top 5 within 3.0s	2:03.617Joe Kristensen · fastest of 10 · top 5 within 1.8s		90.3%qual 89.7%

By track

Track	Events	Typical % of the field	Best	Latest
Virginia International Raceway	3	90.1%	88.3%Runoffs 2019	90.1%Runoffs 2023
Indianapolis Motor Speedway	2	88.9%	88.9%Runoffs 2021	88.9%Runoffs 2021
Road America	2	89.6%	89.6%Runoffs 2020	89.9%Runoffs 2024
Daytona International Speedway	1	90.3%	90.3%Runoffs 2015	90.3%Runoffs 2015
Mid-Ohio Sports Car Course	1	89.4%	89.4%Runoffs 2016	89.4%Runoffs 2016
Sonoma Raceway	1	88.7%	88.7%Runoffs 2018	88.7%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.