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BoP Lab / Classes / T2

T2 vs FB vs F5 vs FC pace at every track

Lap times across years say as much about the weather as the class. % of T2 is each class's best lap as a share of T2's on the same day, 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: remove one to add another)
ASB-SpecEPvsF5×FAvsFB×vsFC×FE2FFFPFVFXGT1GT2GTXHPPP2SMSMXSRF3STLSTUT1T2×T3T4Show 49 inactive classes
Series
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: T2 100.0% of T2 Kurt Rezzetano, Daytona International Speedway Runoffs 2015 race · FB 84.4% of T2 J R Osborne, Sonoma Raceway Runoffs 2018 qualifying · F5 94.6% of T2 Wiley Clinton McMahan, Indianapolis Motor Speedway Runoffs 2017 race · FC 88.1% of T2 Timothy de Silva, Sonoma Raceway Runoffs 2018 qualifying

1:201:402:002:2026 rule changes between Runoffs 2018 and Runoffs 201926 ▾40 rule changes between Runoffs 2019 and Runoffs 202040 ▾34 rule changes between Runoffs 2020 and Runoffs 202134 ▾31 rule changes between Runoffs 2021 and Runoffs 202231 ▾20 rule changes between Runoffs 2022 and Runoffs 202320 ▾33 rule changes between Runoffs 2023 and Runoffs 202433 ▾31 rule changes between Runoffs 2024 and Runoffs 202531 ▾28 rule changes between Runoffs 2025 and Runoffs 202628 ▾T2 race best at Runoffs 2015: 2:01.077 (Kurt Rezzetano)T2 race best at Runoffs 2016: 1:32.691 (John M Buttermore)T2 race best at Runoffs 2017: 1:48.769 (John M Buttermore)T2 race best at Runoffs 2018: 1:45.999 (John Kachadurian)T2 race best at Runoffs 2019: 1:58.551 (Cooper I MacNeil)T2 race best at Runoffs 2020: 2:26.803 (Kurt Rezzetano)T2 race best at Runoffs 2021: 1:48.474 (Kurt Rezzetano)T2 race best at Runoffs 2022: 2:04.756 (Kurt Rezzetano)T2 race best at Runoffs 2023: 2:01.201 (Kurt Rezzetano)T2 race best at Runoffs 2024: 2:23.261 (Kurt Rezzetano)T2 race best at Runoffs 2025: 2:23.483 (Kurt Rezzetano)T2 race best at Runoffs 2026: 2:23.141 (Scotty B White)T2 qualifying best at Runoffs 2015: 2:00.172 (Kurt Rezzetano)T2 qualifying best at Runoffs 2016: 1:31.563 (Preston Calvert)T2 qualifying best at Runoffs 2017: 1:48.618 (John M Buttermore)T2 qualifying best at Runoffs 2018: 1:45.032 (John Kachadurian)T2 qualifying best at Runoffs 2019: 1:57.537 (Cooper I MacNeil)T2 qualifying best at Runoffs 2020: 2:24.195 (Alan Kossof)T2 qualifying best at Runoffs 2021: 1:47.509 (Kurt Rezzetano)T2 qualifying best at Runoffs 2022: 2:00.276 (Kurt Rezzetano)T2 qualifying best at Runoffs 2023: 1:59.504 (Kurt Rezzetano)T2 qualifying best at Runoffs 2024: 2:22.117 (Kurt Rezzetano)T2 qualifying best at Runoffs 2025: 2:23.351 (Kurt Rezzetano)T2 qualifying best at Runoffs 2026: 2:23.977 (Scotty B White)FB race best at Runoffs 2015: 1:51.616 (J R Osborne)FB race best at Runoffs 2016: 1:21.015 (Jeremy Hill)FB race best at Runoffs 2017: 1:33.702 (Alex Mayer)FB race best at Runoffs 2018: 1:31.189 (J R Osborne)FB race best at Runoffs 2019: 1:57.688 (Pete Frost)FB qualifying best at Runoffs 2015: 1:50.711 (J R Osborne)FB qualifying best at Runoffs 2016: 1:19.886 (Alex Mayer)FB qualifying best at Runoffs 2017: 1:33.746 (Gary Hickman)FB qualifying best at Runoffs 2018: 1:28.612 (J R Osborne)FB qualifying best at Runoffs 2019: 1:54.469 (Pete Frost)F5 race best at Runoffs 2015: 2:03.298 (Matthew Strand)F5 race best at Runoffs 2016: 1:29.853 (Steven Thompson)F5 race best at Runoffs 2017: 1:42.860 (Wiley Clinton McMahan)F5 race best at Runoffs 2018: 1:42.491 (David Lapham)F5 race best at Runoffs 2019: 1:57.572 (Wiley Mcmahan)F5 race best at Runoffs 2020: 2:21.391 (James Weida)F5 race best at Runoffs 2021: 1:43.140 (Sven de Vries)F5 race best at Runoffs 2022: 2:21.862 (Sven de Vries)F5 qualifying best at Runoffs 2015: 2:01.824 (W. Clint McMahan)F5 qualifying best at Runoffs 2016: 1:28.528 (Calvin Stewart)F5 qualifying best at Runoffs 2017: 1:43.136 (Wiley Clinton McMahan)F5 qualifying best at Runoffs 2018: 1:41.807 (Jeff Jorgenson)F5 qualifying best at Runoffs 2019: 1:57.361 (Wiley Mcmahan)F5 qualifying best at Runoffs 2020: 2:20.954 (Calvin Stewart)F5 qualifying best at Runoffs 2021: 1:42.619 (Ryan Mayfield)F5 qualifying best at Runoffs 2022: 1:57.689 (James Weida)FC race best at Runoffs 2015: 1:55.135 (Yufeng Luo)FC race best at Runoffs 2016: 1:22.049 (Nigel Saurino)FC race best at Runoffs 2017: 1:36.890 (Tim Minor)FC race best at Runoffs 2018: 1:34.053 (Mitch Egner)FC race best at Runoffs 2019: 1:52.174 (Robert Allaer)FC race best at Runoffs 2020: 2:13.608 (Robert Allaer)FC race best at Runoffs 2021: 1:36.980 (Simon Sikes)FC race best at Runoffs 2022: 2:07.859 (Nolan Allaer)FC race best at Runoffs 2023: 1:51.169 (Nolan Allaer)FC race best at Runoffs 2024: 2:11.534 (Michael Varacins)FC race best at Runoffs 2025: 2:12.824 (Brandon Dixon)FC race best at Runoffs 2026: 2:11.389 (Brandon Dixon)FC qualifying best at Runoffs 2015: 1:54.477 (Yufeng Luo)FC qualifying best at Runoffs 2016: 1:21.962 (John LaRue)FC qualifying best at Runoffs 2017: 1:36.336 (Austin McCusker)FC qualifying best at Runoffs 2018: 1:32.571 (Timothy de Silva)FC qualifying best at Runoffs 2019: 1:51.200 (Robert Allaer)FC qualifying best at Runoffs 2020: 2:12.644 (Robert Allaer)FC qualifying best at Runoffs 2021: 1:36.787 (Trent Walko)FC qualifying best at Runoffs 2022: 1:49.895 (Nolan Allaer)FC qualifying best at Runoffs 2023: 1:50.281 (Nolan Allaer)FC qualifying best at Runoffs 2024: 2:11.626 (Timothy Minor)FC qualifying best at Runoffs 2025: 2:11.259 (Brandon Dixon)FC qualifying best at Runoffs 2026: 2:10.686 (Brandon Dixon)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
T2FBF5FCsolid race · dashed qualifying · slower is lower
85%90%95%100%26 rule changes between Runoffs 2018 and Runoffs 201926 ▾40 rule changes between Runoffs 2019 and Runoffs 202040 ▾34 rule changes between Runoffs 2020 and Runoffs 202134 ▾31 rule changes between Runoffs 2021 and Runoffs 202231 ▾20 rule changes between Runoffs 2022 and Runoffs 202320 ▾33 rule changes between Runoffs 2023 and Runoffs 202433 ▾31 rule changes between Runoffs 2024 and Runoffs 202531 ▾28 rule changes between Runoffs 2025 and Runoffs 202628 ▾T2 race best at Runoffs 2015: 100.0% of T2's (Kurt Rezzetano)T2 race best at Runoffs 2016: 100.0% of T2's (John M Buttermore)T2 race best at Runoffs 2017: 100.0% of T2's (John M Buttermore)T2 race best at Runoffs 2018: 100.0% of T2's (John Kachadurian)T2 race best at Runoffs 2019: 100.0% of T2's (Cooper I MacNeil)T2 race best at Runoffs 2020: 100.0% of T2's (Kurt Rezzetano)T2 race best at Runoffs 2021: 100.0% of T2's (Kurt Rezzetano)T2 race best at Runoffs 2022: 100.0% of T2's (Kurt Rezzetano)T2 race best at Runoffs 2023: 100.0% of T2's (Kurt Rezzetano)T2 race best at Runoffs 2024: 100.0% of T2's (Kurt Rezzetano)T2 race best at Runoffs 2025: 100.0% of T2's (Kurt Rezzetano)T2 race best at Runoffs 2026: 100.0% of T2's (Scotty B White)T2 qualifying best at Runoffs 2015: 100.0% of T2's (Kurt Rezzetano)T2 qualifying best at Runoffs 2016: 100.0% of T2's (Preston Calvert)T2 qualifying best at Runoffs 2017: 100.0% of T2's (John M Buttermore)T2 qualifying best at Runoffs 2018: 100.0% of T2's (John Kachadurian)T2 qualifying best at Runoffs 2019: 100.0% of T2's (Cooper I MacNeil)T2 qualifying best at Runoffs 2020: 100.0% of T2's (Alan Kossof)T2 qualifying best at Runoffs 2021: 100.0% of T2's (Kurt Rezzetano)T2 qualifying best at Runoffs 2022: 100.0% of T2's (Kurt Rezzetano)T2 qualifying best at Runoffs 2023: 100.0% of T2's (Kurt Rezzetano)T2 qualifying best at Runoffs 2024: 100.0% of T2's (Kurt Rezzetano)T2 qualifying best at Runoffs 2025: 100.0% of T2's (Kurt Rezzetano)T2 qualifying best at Runoffs 2026: 100.0% of T2's (Scotty B White)FB race best at Runoffs 2015: 92.2% of T2's (J R Osborne)FB race best at Runoffs 2016: 87.4% of T2's (Jeremy Hill)FB race best at Runoffs 2017: 86.1% of T2's (Alex Mayer)FB race best at Runoffs 2018: 86.0% of T2's (J R Osborne)FB race best at Runoffs 2019: 99.3% of T2's (Pete Frost)FB qualifying best at Runoffs 2015: 92.1% of T2's (J R Osborne)FB qualifying best at Runoffs 2016: 87.2% of T2's (Alex Mayer)FB qualifying best at Runoffs 2017: 86.3% of T2's (Gary Hickman)FB qualifying best at Runoffs 2018: 84.4% of T2's (J R Osborne)FB qualifying best at Runoffs 2019: 97.4% of T2's (Pete Frost)F5 race best at Runoffs 2015: 101.8% of T2's (Matthew Strand)F5 race best at Runoffs 2016: 96.9% of T2's (Steven Thompson)F5 race best at Runoffs 2017: 94.6% of T2's (Wiley Clinton McMahan)F5 race best at Runoffs 2018: 96.7% of T2's (David Lapham)F5 race best at Runoffs 2019: 99.2% of T2's (Wiley Mcmahan)F5 race best at Runoffs 2020: 96.3% of T2's (James Weida)F5 race best at Runoffs 2021: 95.1% of T2's (Sven de Vries)Off the chart: F5 race best at Runoffs 2022: 113.7% of T2's (Sven de Vries)F5 qualifying best at Runoffs 2015: 101.4% of T2's (W. Clint McMahan)F5 qualifying best at Runoffs 2016: 96.7% of T2's (Calvin Stewart)F5 qualifying best at Runoffs 2017: 95.0% of T2's (Wiley Clinton McMahan)F5 qualifying best at Runoffs 2018: 96.9% of T2's (Jeff Jorgenson)F5 qualifying best at Runoffs 2019: 99.9% of T2's (Wiley Mcmahan)F5 qualifying best at Runoffs 2020: 97.8% of T2's (Calvin Stewart)F5 qualifying best at Runoffs 2021: 95.5% of T2's (Ryan Mayfield)F5 qualifying best at Runoffs 2022: 97.8% of T2's (James Weida)FC race best at Runoffs 2015: 95.1% of T2's (Yufeng Luo)FC race best at Runoffs 2016: 88.5% of T2's (Nigel Saurino)FC race best at Runoffs 2017: 89.1% of T2's (Tim Minor)FC race best at Runoffs 2018: 88.7% of T2's (Mitch Egner)FC race best at Runoffs 2019: 94.6% of T2's (Robert Allaer)FC race best at Runoffs 2020: 91.0% of T2's (Robert Allaer)FC race best at Runoffs 2021: 89.4% of T2's (Simon Sikes)FC race best at Runoffs 2022: 102.5% of T2's (Nolan Allaer)FC race best at Runoffs 2023: 91.7% of T2's (Nolan Allaer)FC race best at Runoffs 2024: 91.8% of T2's (Michael Varacins)FC race best at Runoffs 2025: 92.6% of T2's (Brandon Dixon)FC race best at Runoffs 2026: 91.8% of T2's (Brandon Dixon)FC qualifying best at Runoffs 2015: 95.3% of T2's (Yufeng Luo)FC qualifying best at Runoffs 2016: 89.5% of T2's (John LaRue)FC qualifying best at Runoffs 2017: 88.7% of T2's (Austin McCusker)FC qualifying best at Runoffs 2018: 88.1% of T2's (Timothy de Silva)FC qualifying best at Runoffs 2019: 94.6% of T2's (Robert Allaer)FC qualifying best at Runoffs 2020: 92.0% of T2's (Robert Allaer)FC qualifying best at Runoffs 2021: 90.0% of T2's (Trent Walko)FC qualifying best at Runoffs 2022: 91.4% of T2's (Nolan Allaer)FC qualifying best at Runoffs 2023: 92.3% of T2's (Nolan Allaer)FC qualifying best at Runoffs 2024: 92.6% of T2's (Timothy Minor)FC qualifying best at Runoffs 2025: 91.6% of T2's (Brandon Dixon)FC qualifying best at Runoffs 2026: 90.8% of T2's (Brandon Dixon)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
T2FBF5FCsolid race · dashed qualifying · each class's best lap as a share of T2's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventT2FBF5FC
Qual best Race best Trap Qual best Race best Trap vs T2 % of T2 Qual best Race best Trap vs T2 % of T2 Qual best Race best Trap vs T2 % of T2 
Road America Runoffs 20262026-09-282:23.977Scotty B White · fastest of 22 · top 5 within 2.5s+0.626s (+0.44%)2:23.141Scotty B White · fastest of 18 · top 5 within 2.7s-0.342s (-0.24%)147.2Ami Wilson-6.9 mph (-4.5%)2:10.686Brandon Dixon · fastest of 10 · top 5 within 4.0s-0.573s (-0.44%)2:11.389Brandon Dixon · fastest of 10 · top 5 within 2.7s-1.435s (-1.08%)143.3Dean Kiriluk-1.8 mph (-1.2%)-11.752squal -13.291s91.8%qual 90.8%
28 rule changes (T2: 26, FC: 2)9 weight · 4 cars added · 3 induction · 3 suspension & brakes · 2 aero · 1 engine · 1 tyres & wheels · 5 othershowhide
  • T2 TCR Data Points - BoP #40508weight +300 lbs
  • T2 2023 TCR Hyundais #40278cars added
  • T2 2015+ Ecoboost Mustang #40005weight -100 lbs
  • T2 C6 Corvette - All Body Trims Requested #40174aero
  • T2 T2-TCR Table Mazda 3 #40209tyres & wheels
  • T2 14-17 BMW 435i Brake Approval Request #39910suspension & brakes
  • T2 Porsche Cayman S Spec Lines Needed for Atlanta HST #39947engine
  • T2 Please address loopholes in T2 TCR #40002weight
  • T2 BMW 240i Permitted Tune #39861other
  • T2 Request to Add 2014-2017 435i to T2 #38991cars added
  • T2 Consideration for Nissan Z & NISMO Z to Touring 2 Class #39296cars added
  • T2 Allow Alt Bushing Material in Toe Links #39607suspension & brakes
  • T2 Request for Classification of MG6 TCR in T2-TCR Class #39702cars added
  • FC F2000 MZR Spec Line Clarity/Revision Requested #38927other
  • FC Adjust F2000 Metrik ZF2 weight #39612weight -20 lbs
  • T2 Alternate Placement of Fuse Panel and Electronics Request #39370other
  • T2 Rebalance Blackwing Cadillac T2 for 2026 #39426weight -50 lbs
  • T2 C6 LS2 Corvette Parity Request #39472induction
  • T2 T2 Tire Sizing #39490weight -25 lbs
  • T2 Rear Spoiler for Mustang GT S550 (15-23) #39499aero
  • T2 Clarify T4 Brake Rotor Allowance #39503suspension & brakes
  • T2 Help the 2011-2014 s197Mustang GT and Boss302 Less Restriction #38523induction
  • T2 Improving Competitiveness of Gen 5 Camaro SS #39021weight -50 lbs
  • T2 Adjust T2 Darkhorse R #39346weight
  • T2 ND Gearset Request for T4 #39166other
  • T2 ND Spec Lines Wrong PT#'s #39170weight
  • T2 Touring 2 Post-Runoffs BOP Adjustments and Changes #39274induction -50 lbs
  • T2 Adjust rev limit on Spec Corvette in T2 #39282other
Road America Runoffs 20252025-09-292:23.351Kurt Rezzetano · fastest of 11 · top 5 within 3.1s+1.234s (+0.87%)2:23.483Kurt Rezzetano · fastest of 10 · top 5 within 2.9s+0.222s (+0.15%)154.1John Heinricy+4.8 mph (+3.2%)2:11.259Brandon Dixon · fastest of 10 · top 5 within 2.7s-0.367s (-0.28%)2:12.824Brandon Dixon · fastest of 9 · top 5 within 2.3s+1.290s (+0.98%)145.1Brandon Dixon+0.9 mph (+0.6%)-10.659squal -12.092s92.6%qual 91.6%
31 rule changes (T2: 29, FC: 2)6 induction · 6 tyres & wheels · 5 weight · 4 cars added · 3 suspension & brakes · 2 engine · 2 removed · 1 wording · 2 othershowhide
  • T2 Incorrect Touring Heading #38451wording
  • T2 Clarifications needed to BMW M2 CS cup line #38536tyres & wheels
  • T2 Fix brake allowance supersessions. #38554suspension & brakes
  • T2 C5 Corvette correction #38782induction
  • T2 C6 T-2 Corvette 6 Liter Engine Restrictor #37490induction
  • T2 370Z Mid link Replacement for True Coil Overs and OEM Wheel Size #38014tyres & wheels
  • T2 T2 Cadillac tire #38210tyres & wheels
  • T2 Please class the Darkhorse R in T2 #37295cars added
  • T2 T2 350Z Spec Line Cleanup #37603weight
  • T2 T2 BOP #37312induction
  • T2 Mustang Update backdate #37275removed
  • T2 BOP Adjustment for 2016 - Camaro SS/1LE #37434weight +100 lbs
  • T2 BMW M235iR TCS CHANGE REQUEST #37470other
  • T2 Request to Classify Club Spec in Appropriate Touring Classes #37523cars added
  • T2 Remove spec lines that have expired #37269induction
  • T2 BoP for the Various Mustangs #37185weight -50 lbs
  • T2 Spec Corvette Line Clarification. #37441weight
  • T2 Redundant Verbiage Regarding Mustang Spec Lines for Driveshaft #36484suspension & brakes
  • T2 Request Less Restriction for Ls-3 Engined C6 Corvette #36810induction
  • T2 Fuel Emissions Components #37076engine
  • T2 fix brake wording #37129suspension & brakes
  • T2 Evaporative emissions systems #37130engine
  • T2 Move Spec Boxster to T4 #37158cars added
  • T2 Corvette Wheels #37169tyres & wheels
  • T2 BMW 320i Spec Line #37204other
  • T2 Classification for a 2005 Cadillac CTS 3.6 liter 6 speed manual #37224cars added
  • T2 Please Consider Allowing Update to the C5 Corvette #37298induction
  • T2 Major error in lane, but nobody ran it. #37302removed
  • FC 9.1.1.10.h. FC Tire Rule #36533tyres & wheels
  • FC Change FF/FC Weight with Sequential Gearbox #36651weight
  • T2 Spec Corvette Change for T2 #37127tyres & wheels
Road America Runoffs 20242024-10-012:22.117Kurt Rezzetano · fastest of 8 · top 5 within 2.7s-2.078s (-1.44%)2:23.261Kurt Rezzetano · fastest of 7 · top 5 within 3.0s-3.542s (-2.41%)149.3Scotty B White+2.0 mph (+1.3%)2:11.626Timothy Minor · fastest of 10 · top 5 within 1.3s-1.018s (-0.77%)2:11.534Michael Varacins · fastest of 9 · top 5 within 1.8s-2.074s (-1.55%)144.2Michael Varacins+1.8 mph (+1.2%)-11.727squal -10.491s91.8%qual 92.6%
33 rule changes (T2: 31, FC: 2)11 weight · 7 suspension & brakes · 3 induction · 3 tyres & wheels · 1 cars added · 1 engine · 1 wording · 6 othershowhide
  • T2 Errors #36214induction -75 lbs
  • T2 Subaru Appeal #36258other
  • T2 S550 Brakes #36571suspension & brakes
  • T2 Mustang T2/T3 #35877other
  • T2 S550 Brakes #35926suspension & brakes
  • T2 T2-T4 Driveshaft Mistake...? #36050weight
  • T2 request for allowance of 6 piston calipers for T2 C5 corvettes #36126other
  • T2 B8/8.5 Audi S4 T3 and T2 #36195cars added
  • T2 Allow T4 and T3 RX8 to Disable/Remove Factory Oil Inj. #35761engine
  • T2 Competition Adjustment Request/Wheel Size of E46 #35895tyres & wheels
  • T2 Driveshafts #35916weight
  • FC Four Pot Calipers #35481weight
  • T2 Brake Request for 2009 Porsche Cayman #35723suspension & brakes
  • T2 Reorganize Spec Lines #35375induction
  • T2 370Z Brake Rotor Size Correction #35487suspension & brakes
  • T2 Letter #35154 2018+ Mustang GT Expansion #35488suspension & brakes
  • T2 2015+ Mustang Sway Bar and A-Arm Request #35154suspension & brakes
  • T2 Brake Kits #35245suspension & brakes
  • T2 Runoffs wording on Caddy in T2 #35377wording
  • T2 More Car Lightening Stuff #35319weight
  • T2 Inclusion of B-C spec cars in T4 #35374other
  • T2 T2-T4 Set expiration dates on spec lines #35378induction
  • T2 Reply to letter #35161 and #31661 #35384weight +75 lbs
  • FC Please correct omitted punctuation #34890weight
  • T2 Rebalance Blackwing Cadillac T2 #35079tyres & wheels
  • T2 M2 CS RACING #35130weight -50 lbs
  • T2 Spec Corvette in T2 #35139weight -175 lbs
  • T2 T2 Viper BoP #35155tyres & wheels
  • T2 BOP Adjustment for 5.0L Mustangs #35156weight +75 lbs
  • T2 Take at Look at T-2 BOP #35161weight -50 lbs
  • T2 C5 Corvette Spec Line Oversight #35169weight
  • T2 Requested Update of Model Years of 370Z #35231other
  • T2 M2 CS RACING #35122other
Virginia International Raceway Runoffs 20232023-09-231:59.504Kurt Rezzetano · fastest of 13 · top 5 within 2.1s-0.772s (-0.64%)2:01.201Kurt Rezzetano · fastest of 13 · top 5 within 1.6s-3.555s (-2.85%)150.7Scotty B White-1.9 mph (-1.2%)1:50.281Nolan Allaer · fastest of 11 · top 5 within 2.3s+0.386s (+0.35%)1:51.169Nolan Allaer · fastest of 11 · top 5 within 2.5s-16.690s (-13.05%)143.5Robert Allaer+2.3 mph (+1.7%)-10.032squal -9.223s91.7%qual 92.3%
20 rule changes (T2: 17, FC: 3)5 weight · 4 suspension & brakes · 3 tyres & wheels · 2 engine · 1 induction · 1 wording · 4 othershowhide
  • T2 Corvette LS2 Restrictor Plate Adjustment #34456induction
  • T2 Blacking Cadillac Fuel Capacity #34624engine
  • T2 Rules Clarification for Mazda RX8 Spec Line #34395weight
  • T2 rule book corrections #34437wording
  • T2 Ride Height Correction for the T3 Solstice. #34615suspension & brakes
  • FC Review FC Runoffs Tire Marking Rule #34274tyres & wheels
  • T2 370Z Obsolete Parts & NISMO Alternatives to SPL Parts #34297weight
  • FC USF2000 Van Diemen with Mazda MZR LF-DE 2.0L in FC #34329weight
  • T2 2009 Porsche Cayman Classing Request #34147other
  • T2 C5 Z06 Straight Line Speed #33575weight
  • T2 Allowance of any nonmetallic bushing material in T2 #33833suspension & brakes
  • T2 Allow Adjustable stabilizer bar links #33861suspension & brakes
  • T2 Honda Civic Type R Tire Size Increase #33672tyres & wheels
  • T2 C5 Corvette Swaybars #33269other
  • T2 Mustang OEM Grill Request #33333other
  • FC E&O 9.1.1.B.16.j #33634engine
  • T2 BMW M235iR/M240iR Aftermarket 2WNR Shocks Allowed - Touring 2 #33464suspension & brakes -50 lbs
  • T2 Touring (T2-T5) Category #33617tyres & wheels
  • T2 ENO 9.1.9.2.D.1.e.1.a. #33651other
  • T2 Heavy Cars #33345weight +125 lbs
Virginia International Raceway Runoffs 20222022-09-242:00.276Kurt Rezzetano · fastest of 14 · top 5 within 1.7s+2.739s (+2.33%)2:04.756Kurt Rezzetano · fastest of 14 · top 5 within 2.0s+6.205s (+5.23%)152.5Aaron Kaplan+3.2 mph (+2.1%)1:57.689James Weida · fastest of 11 · top 5 within 3.9s+0.328s (+0.28%)2:21.862Sven de Vries · fastest of 10 · top 5 within 14.3s+24.290s (+20.66%)142.9Calvin Stewart+0.1 mph (+0.1%)+17.106squal -2.587s113.7%qual 97.8%1:49.895Nolan Allaer · fastest of 12 · top 5 within 1.5s-1.305s (-1.17%)2:07.859Nolan Allaer · fastest of 13 · top 5 within 3.8s+15.685s (+13.98%)141.2Tim Minor-0.6 mph (-0.4%)+3.103squal -10.381s102.5%qual 91.4%
31 rule changes (T2: 20, F5: 6, FC: 5)6 engine · 5 cars added · 5 suspension & brakes · 3 induction · 3 weight · 2 tyres & wheels · 2 wording · 5 othershowhide
  • F5 Intake Boots Correction #33028induction
  • F5 Ensure availability of ECU for Rotax engines #32695engine
  • F5 Clarify stepped exhaust header references #32743engine
  • FC Add Specification to Performance Electronics ECU for Ford Zetec #32761engine
  • F5 593 carb boot availability and oil pump clarification #32527induction
  • T2 BMW M235iR/M240iR Min Weight Clarification #32430weight
  • T2 Follow up to Letter 30888 #32477other
  • T2 Request Alternate Front & Rear Strut/Shock Top Hats #32452suspension & brakes
  • T2 Request BoP E92 torque #32456other
  • T2 Classify Cadillac Blackwing #32535cars added
  • T2 Request to Allow the Use of Aftermarket ECU's in Touring #31067engine
  • T2 BMW M2 CS Cup 2020- Exhaust #32243tyres & wheels
  • T2 RequestT2 classification- 2022 Cadillac CT4-V Blackwing #32263cars added
  • F5 E&O class name #32194other
  • T2 Reply to letter #31486/29879 T2-T4 Grill openings #31935suspension & brakes
  • T2 C6 Restrictor Help #31995induction
  • T2 BMW Z4M Adjustment #31885weight -50 lbs
  • F5 Data Box Mounting Plate #31638other
  • FC Clean up Chassis/Frame section #31867engine
  • T2 Touring 2 BOP adjustments for 2022 #31480weight -50 lbs
  • T2 Reply to letter 29879 T2-T4 Grill Openings #31486suspension & brakes
  • T2 Request to clarify radiator hoses #31682wording
  • T2 Clarify Permitted/Allowed #31743suspension & brakes
  • T2 SMG #31837other
  • FC Clarify Zetec ECU requirements #31554engine
  • T2 Typo for BMW M2 CS Cup 2020 #31173suspension & brakes
  • FC Clarify composite anti-intrusion panel language #31426wording
  • FC Clarify tire marking requirements #31455tyres & wheels
  • T2 Request to Classify 2014 VW Jetta 1.8t TSI #30436cars added
  • T2 Request new car 2017 BMW M2 #30486cars added
  • T2 Request to Classify Porsche 997.2 GTS in T2 (body not = to C2S) #30686cars added
Indianapolis Motor Speedway Runoffs 20212021-09-251:47.509Kurt Rezzetano · fastest of 26 · top 5 within 1.6s-1.109s (-1.02%)1:48.474Kurt Rezzetano · fastest of 26 · top 5 within 2.5s-0.295s (-0.27%)151.5Scotty B. White1:42.619Ryan Mayfield · fastest of 22 · top 5 within 1.6s-0.517s (-0.50%)1:43.140Sven de Vries · fastest of 20 · top 5 within 1.7s+0.280s (+0.27%)144.4James Weida-5.334squal -4.890s95.1%qual 95.5%1:36.787Trent Walko · fastest of 31 · top 5 within 1.7s+0.451s (+0.47%)1:36.980Simon Sikes · fastest of 31 · top 5 within 2.0s+0.090s (+0.09%)141.6Tim Minor-11.494squal -10.722s89.4%qual 90.0%
34 rule changes (T2: 30, F5: 3, FC: 1)9 weight · 3 cars added · 3 suspension & brakes · 3 tyres & wheels · 1 engine · 1 induction · 2 wording · 12 othershowhide
  • T2 BMW M2 CS Power Stick Part Number #31087wording
  • F5 Clarify allowable assisted shifting systems #30871wording
  • F5 Request to correct terminology #30976tyres & wheels
  • T2 997.1 EO #30933other
  • T2 Request #30406weight
  • F5 Request to Allow Rotax 593 HO Engine #30712engine
  • T2 Civic Type R Brake Rotors #29817suspension & brakes
  • T2 Mustang S550 Parity in T2 #29925other
  • T2 Request BOP on BMW Z4 T2 car #30597weight +50 lbs
  • T2 E92 #30639weight -50 lbs
  • T2 C5/6 Corvette in T1, T1-LP and T2 Dry Sump Standardization #29046other
  • T2 Request for Chevrolet Camaro 1LE (2016-) Auto Trans #29067other
  • T2 Request E46 M3 Minimum Competition Weight #29429weight -100 lbs
  • T2 Request to add 2015 to Chevrolet Camaro SS/1LE 2010-2014 #29736other
  • T2 Request consistency review in GCR #30263other
  • T2 Class Spec Corvette in T2? #30297cars added
  • T2 E92 BMW Spring Rate Request #30391suspension & brakes
  • T2 Please correct recent T2 Spec Line #30401suspension & brakes
  • FC Request for FC Weight Change #30171weight
  • T2 Request BMW M2CS door glass removal #30254other
  • T2 Request Addition of BMW M240iR #29503weight
  • T2 2021 Toyota Supra #29567cars added
  • T2 Request Cold Air Intake for Honda Civic Type R #29942induction
  • T2 Adjust T2 spec line that was missed in T2 BOP #30055weight -50 lbs
  • T2 Fix T2 Mustang spec line #30106other
  • T2 Z4 Wheel Size #30113tyres & wheels
  • T2 Clarify T2 Spec lines #30194tyres & wheels
  • T2 Request to Classify BMW M2 CS #29523cars added
  • T2 350Z Rear Caliper Replacement #29710other
  • T2 Request Mustang 8.8” rear axle replacement #29860other
  • T2 Cap year range on all 86s #29908other
  • T2 Request to Reevaluate T2 Spec Line for E92 M3 #28266weight -50 lbs
  • T2 Request for Parity Among Vehicles Including S550 Mustang #29486weight -75 lbs
  • T2 Alfa Romeo 4C Launch Edition #29531other
Road America Runoffs 20202020-10-022:24.195Alan Kossof · fastest of 15 · top 5 within 2.5s2:26.803Kurt Rezzetano · fastest of 14 · top 5 within 2.2s147.3Mark Boden2:20.954Calvin Stewart · fastest of 16 · top 5 within 1.8s2:21.391James Weida · fastest of 14 · top 5 within 1.5s143.2Aaron Ellis-5.412squal -3.241s96.3%qual 97.8%2:12.644Robert Allaer · fastest of 13 · top 5 within 2.1s2:13.608Robert Allaer · fastest of 11 · top 5 within 1.2s142.4Robert Allaer-13.195squal -11.551s91.0%qual 92.0%
40 rule changes (T2: 30, F5: 6, FC: 4)9 weight · 7 suspension & brakes · 5 engine · 4 induction · 2 cars added · 1 aero · 1 tyres & wheels · 5 wording · 6 othershowhide
  • F5 Request to Update Suzuki Engine Years for F500 #29453engine
  • FC Urgent: SCCA PE3 map unsuitable #29475induction
  • T2 Request 2018+ mustang swaybar update #28659suspension & brakes
  • T2 Request to Clarify New 2-piece Brake Rotor Rule #29106suspension & brakes
  • T2 please consider BoP for the following cars in T2 #29266weight -50 lbs
  • T2 Request clarification on most recent approval by the Board #29284suspension & brakes
  • FC Request for weight adjustments to equalize FC competition. #28888weight
  • T2 Request to correct GCR for 2018+ FORD Mustang GT & Ecoboost #28803wording
  • F5 Request for Cockpit Adjustment of External Jetting Devices #28359other
  • F5 Two Stroke Motors (reply to #28359 WDYT) #28816engine
  • F5 Re letter requesting driver adjustable carb mixture #28840other
  • F5 #28359 WDYT Request for Cockpit Adjustment #28875other
  • T2 Request to Add a Vehicle to the Roster (contd.) #27698other
  • T2 Request brake upgrade and electric power steering pump #28946suspension & brakes
  • T2 Request to Classify 2004 Mercedes Benz 320 CLK #27663cars added
  • T2 Consider coil spring conversion Corvette in T2 #28824suspension & brakes
  • T2 Please Add the Following BBK to Allowed List for E92 M3 #28421wording
  • T2 C5 Weight Adjustment #28433weight -50 lbs
  • T2 Z3M Roadster Weight #28437weight
  • T2 Limit Changes to the 997.2 Porsche #28242aero
  • T2 Correct T2 Mustang Transmission #28732wording
  • T2 Request to Readjust the T2 Porsches #27746induction
  • T2 Please Switch the Solstice GXP as Specified in T2, to T3 #27413weight -50 lbs
  • T2 Request for Two Piece Stop Tech Brake Rotors #27582suspension & brakes
  • T2 Request to Classify all Mazda RX8 Models in T3/T4 #27606cars added
  • T2 Request for Alternative Brake Kit on Nissan 370Z #27912suspension & brakes
  • T2 2015- Current Ecoboost Mustang #27971weight -100 lbs
  • T2 T2 Mustang #28022tyres & wheels
  • F5 Change 600cc restrictor size #27883induction
  • T2 Clarification of On-Board Fire System for T2 #27183wording
  • T2 Mustang Ecoboost and GT Transmission #27439other
  • T2 Request for Dailey Engineering Dry Sump on 2010 Camaro SS #27514engine
  • T2 Request for Half Shafts - 2014 Camaro SS 1LE #27584induction
  • T2 Request for Parity Among Vehicles #27665weight -50 lbs
  • T2 Request for 2016-2020 Camaro SS Help #27776weight -50 lbs
  • T2 Request for Competitive Adjustments to Honda Civic Type R #27839weight -50 lbs
  • T2 T4 RX8 Classification Error #27902wording
  • T2 Request to add Toyota 86 GT to Spec Line #27910other
  • FC Request for Better Zetec Connecting Rods #27710engine
  • FC Add Alternate Piston #27795engine
Virginia International Raceway Runoffs 20192019-10-051:57.537Cooper I MacNeil · fastest of 19 · top 5 within 3.4s1:58.551Cooper I MacNeil · fastest of 18 · top 5 within 2.4s149.4James Leithauser1:54.469Pete Frost · only car1:57.688Pete Frost · only car145.9Pete Frost-0.863squal -3.068s99.3%qual 97.4%1:57.361Wiley Mcmahan · fastest of 15 · top 5 within 3.8s1:57.572Wiley Mcmahan · fastest of 15 · top 5 within 4.0s142.8Eric McRee-0.979squal -0.176s99.2%qual 99.9%1:51.200Robert Allaer · fastest of 10 · top 5 within 3.1s1:52.174Robert Allaer · fastest of 9 · top 5 within 2.7s141.8Robert Allaer-6.377squal -6.337s94.6%qual 94.6%
26 rule changes (T2: 23, F5: 1, FC: 2)8 weight · 7 suspension & brakes · 5 cars added · 2 tyres & wheels · 1 induction · 1 wording · 2 othershowhide
  • F5 Request for Weight Increase for Motorcycle Powered Cars #27214weight +25 lbs
  • T2 Request spare tire/wheel clarification #27012tyres & wheels
  • T2 Request to change Cadillac CTS-V years from 06-07 to 04-07 #26842cars added
  • T2 Request to allow Hotchkiss front / rear sway bars on T2 CTS-V #26845suspension & brakes
  • T2 Consider T2 06-07 Cadillac CTS-V BoP #27022induction
  • T2 Correct T2 Mustang tire size #27024tyres & wheels
  • T2 2018+ Audi TT RS Suspension Allowances #26631suspension & brakes
  • T2 Request BOP adjustment for 2018 Honda Civic Type R-TIR removal #26882weight +150 lbs
  • FC E&O Wiseco piston and Crower connecting rod #26659weight
  • T2 Request for Removal of Rear Anti-roll Bar in T2 Mustang GT #26533suspension & brakes
  • T2 Request Mustang GT Limited Prep 2018 Classification #24431cars added
  • T2 Request to Classify 2018 Audi TT RS #25961cars added
  • T2 Request for Adjustments on 2017+ Civic Type R #25969suspension & brakes
  • T2 Correct Mazda MX-5 Hard Top Notes #26137weight
  • T2 Consider opening class rules to allow any thermostat #26187wording
  • T2 Ford Mustang Boss 302 (12-13) - correct weight #26287weight -50 lbs
  • T2 Request camber correction 005-2013 corvette C6 #26288suspension & brakes
  • T2 Request 98-02 Firebird 98-02 Camaro reloacte rear spring #26291suspension & brakes
  • T2 Cap 2016 Mazda Miata year at 2018 #26388other
  • T2 Class Ford Mustang GT 2018+ (reference letter 24431) #26400cars added
  • FC Correct Wiseco piston and connecting rod #25809weight
  • T2 Errors, Omissions, and Updates (Various) #22414weight
  • T2 Request to classify 2015 Cayman GTS 3.4L in T2 #25335cars added
  • T2 Request for 2017-2018 Honda Civic Type R - 4 BOP Grill #25513other
  • T2 Add Clarification to Spec Car Classifications Vehicle Spec #25774weight
  • T2 Clarify Subframe Bushings Permitted for T2-T4 #25800suspension & brakes
Sonoma Raceway Runoffs 20182018-10-101:45.032John Kachadurian · fastest of 30 · top 5 within 2.4s1:45.999John Kachadurian · fastest of 28 · top 5 within 3.0s106.5John Kachadurian1:28.612J R Osborne · fastest of 7 · top 5 within 3.3s1:31.189J R Osborne · fastest of 7 · top 5 within 3.7s140.5J R Osborne-14.810squal -16.420s86.0%qual 84.4%1:41.807Jeff Jorgenson · fastest of 5 · top 5 within 6.6s1:42.491David Lapham · fastest of 5 · top 5 within 9.5s113.3David Lapham-3.508squal -3.225s96.7%qual 96.9%1:32.571Timothy de Silva · fastest of 16 · top 5 within 1.8s1:34.053Mitch Egner · fastest of 12 · top 5 within 1.6s133.1Robert Armington-11.946squal -12.461s88.7%qual 88.1%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:48.618John M Buttermore · fastest of 26 · top 5 within 0.8s1:48.769John M Buttermore · fastest of 25 · top 5 within 1.2s1:33.746Gary Hickman · fastest of 18 · top 5 within 3.3s1:33.702Alex Mayer · fastest of 17 · top 5 within 3.0s-15.067squal -14.872s86.1%qual 86.3%1:43.136Wiley Clinton McMahan · fastest of 38 · top 5 within 1.4s1:42.860Wiley Clinton McMahan · fastest of 37 · top 5 within 1.6s-5.909squal -5.482s94.6%qual 95.0%1:36.336Austin McCusker · fastest of 14 · top 5 within 2.3s1:36.890Tim Minor · fastest of 14 · top 5 within 3.8s-11.879squal -12.282s89.1%qual 88.7%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:31.563Preston Calvert · fastest of 22 · top 5 within 0.5s1:32.691John M Buttermore · fastest of 20 · top 5 within 1.5s1:19.886Alex Mayer · fastest of 10 · top 5 within 1.5s1:21.015Jeremy Hill · fastest of 10 · top 5 within 1.2s-11.676squal -11.677s87.4%qual 87.2%1:28.528Calvin Stewart · fastest of 14 · top 5 within 3.9s1:29.853Steven Thompson · fastest of 12 · top 5 within 4.5s-2.838squal -3.035s96.9%qual 96.7%1:21.962John LaRue · fastest of 7 · top 5 within 2.6s1:22.049Nigel Saurino · fastest of 7 · top 5 within 3.0s-10.642squal -9.601s88.5%qual 89.5%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-212:00.172Kurt Rezzetano · fastest of 20 · top 5 within 3.2s2:01.077Kurt Rezzetano · fastest of 19 · top 5 within 2.8s1:50.711J R Osborne · fastest of 20 · top 5 within 1.1s1:51.616J R Osborne · fastest of 19 · top 5 within 2.1s-9.461squal -9.461s92.2%qual 92.1%2:01.824W. Clint McMahan · fastest of 16 · top 5 within 3.0s2:03.298Matthew Strand · fastest of 15 · top 5 within 4.9s+2.221squal +1.652s101.8%qual 101.4%1:54.477Yufeng Luo · fastest of 11 · top 5 within 2.5s1:55.135Yufeng Luo · fastest of 10 · top 5 within 2.1s-5.942squal -5.695s95.1%qual 95.3%

By track

TrackEvents Typical % of T2 Best Latest 
Road America4100.0%100.0%Runoffs 2020100.0%Runoffs 2026
Virginia International Raceway3100.0%100.0%Runoffs 2019100.0%Runoffs 2023
Indianapolis Motor Speedway2100.0%100.0%Runoffs 2017100.0%Runoffs 2021
Daytona International Speedway1100.0%100.0%Runoffs 2015100.0%Runoffs 2015
Mid-Ohio Sports Car Course1100.0%100.0%Runoffs 2016100.0%Runoffs 2016
Sonoma Raceway1100.0%100.0%Runoffs 2018100.0%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 T2's best on the same day: the weather and the day cancel out, so one figure compares across years where lap times cannot; a class that suits one track more than another still reads differently there. It still moves when the yardstick's own balance changes or its field thins, and an event the yardstick did not run has no point. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.