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BoP Lab / Classes / AS

AS vs FE vs SM vs HP pace at every track

Lap times across years say as much about the weather as the class. % of AS is each class's best lap as a share of AS'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)
AS×B-SpecEPFAFCvsFE×FE2FFFPFVFXGT1GT2GTXvsHP×PP2vsSM×SMXSRF3STLSTUT1T2T3T4Show 50 inactive classes
Series
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: AS 100.0% of AS Andy McDermid, Daytona International Speedway Runoffs 2015 race · FE 89.3% of AS Lee Rackley, Sonoma Raceway Runoffs 2018 race · SM 104.5% of AS Michael Carter, Sonoma Raceway Runoffs 2018 race · HP 103.6% of AS Steve Sargis, Indianapolis Motor Speedway Runoffs 2021 qualifying

1:402:002:202:4023 rule changes between Runoffs 2018 and Runoffs 201923 ▾44 rule changes between Runoffs 2019 and Runoffs 202044 ▾40 rule changes between Runoffs 2020 and Runoffs 202140 ▾39 rule changes between Runoffs 2021 and Runoffs 202239 ▾15 rule changes between Runoffs 2022 and Runoffs 202315 ▾42 rule changes between Runoffs 2023 and Runoffs 202442 ▾34 rule changes between Runoffs 2024 and Runoffs 202534 ▾46 rule changes between Runoffs 2025 and Runoffs 202646 ▾AS race best at Runoffs 2015: 2:02.922 (Andy McDermid)AS race best at Runoffs 2016: 1:33.424 (Edward Hosni)AS race best at Runoffs 2017: 1:51.507 (Bryan Long)AS race best at Runoffs 2018: 1:50.345 (John Heinricy)AS race best at Runoffs 2019: 2:03.900 (James Jost)AS race best at Runoffs 2020: 2:27.668 (Gregory Eaton)AS race best at Runoffs 2021: 1:50.606 (Gregory Eaton)AS race best at Runoffs 2022: 2:04.578 (Gregory Eaton)AS race best at Runoffs 2023: 2:04.120 (Gregory Eaton)AS race best at Runoffs 2024: 2:26.429 (Gregory Eaton)AS race best at Runoffs 2025: 2:29.232 (Gregory Eaton)AS race best at Runoffs 2026: 2:28.471 (Andrew McDermid)AS qualifying best at Runoffs 2015: 2:01.746 (Tom Sloe)AS qualifying best at Runoffs 2016: 1:30.651 (Tom Sloe)AS qualifying best at Runoffs 2017: 1:45.220 (James Jost)AS qualifying best at Runoffs 2018: 1:47.782 (Andrew McDermid)AS qualifying best at Runoffs 2019: 2:02.938 (Gregory Eaton)AS qualifying best at Runoffs 2020: 2:27.045 (Gregory Eaton)AS qualifying best at Runoffs 2021: 1:50.427 (Drew Cattell)AS qualifying best at Runoffs 2022: 2:02.162 (Kurt Rezzetano)AS qualifying best at Runoffs 2023: 2:03.082 (Daniel Richardson)AS qualifying best at Runoffs 2024: 2:26.578 (Gregory Eaton)AS qualifying best at Runoffs 2025: 2:26.792 (Andrew McDermid)AS qualifying best at Runoffs 2026: 2:26.911 (Andrew McDermid)FE race best at Runoffs 2015: 1:59.040 (Scott Rettich)FE race best at Runoffs 2016: 1:30.563 (Hanna Zellers)FE race best at Runoffs 2017: 1:39.726 (Elliot Finlayson)FE race best at Runoffs 2018: 1:38.504 (Lee Rackley)FE race best at Runoffs 2019: 1:55.648 (Mark Snyder)FE qualifying best at Runoffs 2015: 1:57.824 (Scott Rettich)FE qualifying best at Runoffs 2016: 1:27.636 (Scott Rettich)FE qualifying best at Runoffs 2017: 1:39.177 (Elliot Finlayson)FE qualifying best at Runoffs 2018: 1:37.517 (Mark Snyder)FE qualifying best at Runoffs 2019: 1:54.710 (Mark Snyder)SM race best at Runoffs 2015: 2:24.067 (Todd Lamb)SM race best at Runoffs 2016: 1:40.764 (Michael Carter)SM race best at Runoffs 2017: 1:59.100 (Michael Gagliardo)SM race best at Runoffs 2018: 1:55.278 (Michael Carter)SM race best at Runoffs 2019: 2:16.459 (Elivan Goulart)SM race best at Runoffs 2020: 2:43.748 (Preston Pardus)SM race best at Runoffs 2021: 1:58.837 (Brian Henderson)SM race best at Runoffs 2022: 2:19.107 (Travis Wiley)SM race best at Runoffs 2023: 2:16.229 (Julian DaCosta)SM race best at Runoffs 2024: 2:41.486 (Brett Kowalski)SM race best at Runoffs 2025: 2:44.430 (Kyle Greenhill)SM race best at Runoffs 2026: 2:42.725 (Francisco Barroso)SM qualifying best at Runoffs 2015: 2:18.661 (Andrew Carbonell)SM qualifying best at Runoffs 2016: 1:40.514 (Justin Hille)SM qualifying best at Runoffs 2017: 1:58.306 (Chris Haldeman)SM qualifying best at Runoffs 2018: 1:54.355 (Ken Sutherland)SM qualifying best at Runoffs 2019: 2:14.552 (Todd Buras)SM qualifying best at Runoffs 2020: 2:42.209 (Kyle Greenhill)SM qualifying best at Runoffs 2021: 1:57.695 (Brian Henderson)SM qualifying best at Runoffs 2022: 2:14.664 (Danny Steyn)SM qualifying best at Runoffs 2023: 2:14.986 (Danny Steyn)SM qualifying best at Runoffs 2024: 2:41.106 (Ethan Goulart)SM qualifying best at Runoffs 2025: 2:43.111 (Bobby Gossett)SM qualifying best at Runoffs 2026: 2:42.173 (Brett Kowalski)HP race best at Runoffs 2015: 2:17.981 (Alan (Aj) Hulse)HP race best at Runoffs 2016: 1:40.442 (Jason Isley)HP race best at Runoffs 2017: 1:57.569 (Vesa Silegren)HP race best at Runoffs 2018: 1:54.434 (Jason Isley)HP race best at Runoffs 2019: 2:15.062 (Ron Bartell)HP race best at Runoffs 2020: 2:47.444 (Steve Sargis)HP race best at Runoffs 2021: 1:56.188 (Steve Sargis)HP race best at Runoffs 2022: 2:11.803 (Vesa Silegren)HP race best at Runoffs 2023: 2:14.681 (Chris Schaafsma)HP race best at Runoffs 2024: 2:37.731 (Chuck Mathis)HP race best at Runoffs 2025: 2:38.270 (Steve Sargis)HP race best at Runoffs 2026: 2:38.036 (Steve Sargis)HP qualifying best at Runoffs 2015: 2:17.369 (Jason Isley)HP qualifying best at Runoffs 2016: 1:39.954 (Jason Isley)HP qualifying best at Runoffs 2017: 1:57.421 (Jason Isley)HP qualifying best at Runoffs 2018: 1:54.070 (Brian Linn)HP qualifying best at Runoffs 2019: 2:14.822 (Steve Sargis)HP qualifying best at Runoffs 2020: 2:39.695 (Daniel Meller)HP qualifying best at Runoffs 2021: 1:54.417 (Steve Sargis)HP qualifying best at Runoffs 2022: 2:13.952 (Steve Sargis)HP qualifying best at Runoffs 2023: 2:14.029 (Chris Schaafsma)HP qualifying best at Runoffs 2024: 2:38.445 (Chuck Mathis)HP qualifying best at Runoffs 2025: 2:38.785 (Steve Sargis)HP qualifying best at Runoffs 2026: 2:39.406 (Chris Schaafsma)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
ASFESMHPsolid race · dashed qualifying · slower is lower
90%95%100%105%110%115%23 rule changes between Runoffs 2018 and Runoffs 201923 ▾44 rule changes between Runoffs 2019 and Runoffs 202044 ▾40 rule changes between Runoffs 2020 and Runoffs 202140 ▾39 rule changes between Runoffs 2021 and Runoffs 202239 ▾15 rule changes between Runoffs 2022 and Runoffs 202315 ▾42 rule changes between Runoffs 2023 and Runoffs 202442 ▾34 rule changes between Runoffs 2024 and Runoffs 202534 ▾46 rule changes between Runoffs 2025 and Runoffs 202646 ▾AS race best at Runoffs 2015: 100.0% of AS's (Andy McDermid)AS race best at Runoffs 2016: 100.0% of AS's (Edward Hosni)AS race best at Runoffs 2017: 100.0% of AS's (Bryan Long)AS race best at Runoffs 2018: 100.0% of AS's (John Heinricy)AS race best at Runoffs 2019: 100.0% of AS's (James Jost)AS race best at Runoffs 2020: 100.0% of AS's (Gregory Eaton)AS race best at Runoffs 2021: 100.0% of AS's (Gregory Eaton)AS race best at Runoffs 2022: 100.0% of AS's (Gregory Eaton)AS race best at Runoffs 2023: 100.0% of AS's (Gregory Eaton)AS race best at Runoffs 2024: 100.0% of AS's (Gregory Eaton)AS race best at Runoffs 2025: 100.0% of AS's (Gregory Eaton)AS race best at Runoffs 2026: 100.0% of AS's (Andrew McDermid)AS qualifying best at Runoffs 2015: 100.0% of AS's (Tom Sloe)AS qualifying best at Runoffs 2016: 100.0% of AS's (Tom Sloe)AS qualifying best at Runoffs 2017: 100.0% of AS's (James Jost)AS qualifying best at Runoffs 2018: 100.0% of AS's (Andrew McDermid)AS qualifying best at Runoffs 2019: 100.0% of AS's (Gregory Eaton)AS qualifying best at Runoffs 2020: 100.0% of AS's (Gregory Eaton)AS qualifying best at Runoffs 2021: 100.0% of AS's (Drew Cattell)AS qualifying best at Runoffs 2022: 100.0% of AS's (Kurt Rezzetano)AS qualifying best at Runoffs 2023: 100.0% of AS's (Daniel Richardson)AS qualifying best at Runoffs 2024: 100.0% of AS's (Gregory Eaton)AS qualifying best at Runoffs 2025: 100.0% of AS's (Andrew McDermid)AS qualifying best at Runoffs 2026: 100.0% of AS's (Andrew McDermid)FE race best at Runoffs 2015: 96.8% of AS's (Scott Rettich)FE race best at Runoffs 2016: 96.9% of AS's (Hanna Zellers)FE race best at Runoffs 2017: 89.4% of AS's (Elliot Finlayson)FE race best at Runoffs 2018: 89.3% of AS's (Lee Rackley)FE race best at Runoffs 2019: 93.3% of AS's (Mark Snyder)FE qualifying best at Runoffs 2015: 96.8% of AS's (Scott Rettich)FE qualifying best at Runoffs 2016: 96.7% of AS's (Scott Rettich)FE qualifying best at Runoffs 2017: 94.3% of AS's (Elliot Finlayson)FE qualifying best at Runoffs 2018: 90.5% of AS's (Mark Snyder)FE qualifying best at Runoffs 2019: 93.3% of AS's (Mark Snyder)Off the chart: SM race best at Runoffs 2015: 117.2% of AS's (Todd Lamb)SM race best at Runoffs 2016: 107.9% of AS's (Michael Carter)SM race best at Runoffs 2017: 106.8% of AS's (Michael Gagliardo)SM race best at Runoffs 2018: 104.5% of AS's (Michael Carter)SM race best at Runoffs 2019: 110.1% of AS's (Elivan Goulart)SM race best at Runoffs 2020: 110.9% of AS's (Preston Pardus)SM race best at Runoffs 2021: 107.4% of AS's (Brian Henderson)SM race best at Runoffs 2022: 111.7% of AS's (Travis Wiley)SM race best at Runoffs 2023: 109.8% of AS's (Julian DaCosta)SM race best at Runoffs 2024: 110.3% of AS's (Brett Kowalski)SM race best at Runoffs 2025: 110.2% of AS's (Kyle Greenhill)SM race best at Runoffs 2026: 109.6% of AS's (Francisco Barroso)SM qualifying best at Runoffs 2015: 113.9% of AS's (Andrew Carbonell)SM qualifying best at Runoffs 2016: 110.9% of AS's (Justin Hille)SM qualifying best at Runoffs 2017: 112.4% of AS's (Chris Haldeman)SM qualifying best at Runoffs 2018: 106.1% of AS's (Ken Sutherland)SM qualifying best at Runoffs 2019: 109.4% of AS's (Todd Buras)SM qualifying best at Runoffs 2020: 110.3% of AS's (Kyle Greenhill)SM qualifying best at Runoffs 2021: 106.6% of AS's (Brian Henderson)SM qualifying best at Runoffs 2022: 110.2% of AS's (Danny Steyn)SM qualifying best at Runoffs 2023: 109.7% of AS's (Danny Steyn)SM qualifying best at Runoffs 2024: 109.9% of AS's (Ethan Goulart)SM qualifying best at Runoffs 2025: 111.1% of AS's (Bobby Gossett)SM qualifying best at Runoffs 2026: 110.4% of AS's (Brett Kowalski)HP race best at Runoffs 2015: 112.3% of AS's (Alan (Aj) Hulse)HP race best at Runoffs 2016: 107.5% of AS's (Jason Isley)HP race best at Runoffs 2017: 105.4% of AS's (Vesa Silegren)HP race best at Runoffs 2018: 103.7% of AS's (Jason Isley)HP race best at Runoffs 2019: 109.0% of AS's (Ron Bartell)HP race best at Runoffs 2020: 113.4% of AS's (Steve Sargis)HP race best at Runoffs 2021: 105.0% of AS's (Steve Sargis)HP race best at Runoffs 2022: 105.8% of AS's (Vesa Silegren)HP race best at Runoffs 2023: 108.5% of AS's (Chris Schaafsma)HP race best at Runoffs 2024: 107.7% of AS's (Chuck Mathis)HP race best at Runoffs 2025: 106.1% of AS's (Steve Sargis)HP race best at Runoffs 2026: 106.4% of AS's (Steve Sargis)HP qualifying best at Runoffs 2015: 112.8% of AS's (Jason Isley)HP qualifying best at Runoffs 2016: 110.3% of AS's (Jason Isley)HP qualifying best at Runoffs 2017: 111.6% of AS's (Jason Isley)HP qualifying best at Runoffs 2018: 105.8% of AS's (Brian Linn)HP qualifying best at Runoffs 2019: 109.7% of AS's (Steve Sargis)HP qualifying best at Runoffs 2020: 108.6% of AS's (Daniel Meller)HP qualifying best at Runoffs 2021: 103.6% of AS's (Steve Sargis)HP qualifying best at Runoffs 2022: 109.7% of AS's (Steve Sargis)HP qualifying best at Runoffs 2023: 108.9% of AS's (Chris Schaafsma)HP qualifying best at Runoffs 2024: 108.1% of AS's (Chuck Mathis)HP qualifying best at Runoffs 2025: 108.2% of AS's (Steve Sargis)HP qualifying best at Runoffs 2026: 108.5% of AS's (Chris Schaafsma)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
ASFESMHPsolid race · dashed qualifying · each class's best lap as a share of AS's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventASFESMHP
Qual best Race best Trap Qual best Race best Trap vs AS % of AS Qual best Race best Trap vs AS % of AS Qual best Race best Trap vs AS % of AS 
Road America Runoffs 20262026-09-282:26.911Andrew McDermid · fastest of 8 · top 5 within 3.4s+0.119s (+0.08%)2:28.471Andrew McDermid · fastest of 8 · top 5 within 2.4s-0.761s (-0.51%)151.0Andrew McDermid-0.6 mph (-0.4%)2:42.173Brett Kowalski · fastest of 34 · top 5 within 0.3s-0.938s (-0.58%)2:42.725Francisco Barroso · fastest of 35 · top 5 within 0.2s-1.705s (-1.04%)119.6Wyatt Couch+0.3 mph (+0.3%)+14.254squal +15.262s109.6%qual 110.4%2:39.406Chris Schaafsma · fastest of 15 · top 5 within 7.7s+0.621s (+0.39%)2:38.036Steve Sargis · fastest of 11 · top 5 within 4.6s-0.234s (-0.15%)122.7Jesse Prather-2.2 mph (-1.8%)+9.565squal +12.495s106.4%qual 108.5%
46 rule changes (AS: 13, FE: 2, SM: 2, HP: 29)12 weight · 11 engine · 5 induction · 5 tyres & wheels · 3 cars added · 1 removed · 1 suspension & brakes · 4 wording · 4 othershowhide
  • AS 2016+ Camaro Spec Line Full Prep #39646tyres & wheels
  • AS Consideration of Pirelli P Zero Trofeo Track for AS Competition #40495tyres & wheels
  • AS Change in 9.1.6.D.4.d.5 in Suspension Mounting Points #40094other
  • AS Re-Add 4.6L 4v 96-04 Mustang Cobra #40239weight
  • AS Errors and Omissions #40532weight
  • HP Mini Cooper Compression Ratio #40517engine
  • HP 1996-2000 Honda Civic (CX, DX, VP, LX) with Engine Code D16Y7 #40322engine
  • HP 1275 Midget/Sprit Alternate intake manifold E/O #40370induction
  • HP HP Honda Civic (92-95) #40464weight -70 lbs
  • SM Rear Toe Link #40271other
  • AS Clarification for LM7 Holley Carburetor #40167engine
  • HP Austin Healy Sprite/ MG Midget 1275 Induction Change Request #40213weight
  • HP Miata track width - errors and omissions #39976wording
  • HP Triumph GT6 Spec Change. #40098induction
  • HP Request to Classify BMW E21 320i #40110cars added
  • HP BMW 318is 84-85 engine displacement correction #40116engine
  • AS Header Information Update for EFI Engine Build Sheets #39886engine
  • AS Errors and Omissions #39933weight
  • SM Part Number Change Request #39914wording
  • AS Re-Organization of AS Spec lines for 2026 #39887removed
  • HP Clarification On Oil Cooler Ducting #39604tyres & wheels
  • HP Honda Fit 2015-19 Error in Engine Classification #39853engine
  • AS Edelbrock manifold (& timing kit) to Chevy LS Spec Lines Request #39055weight
  • HP Triumph Spitfire 1296cc Compression Ratio Increase to 12:1 #39589engine
  • AS Restrictor Plate Change for Gen 2 Ford Coyote Engine #39501induction
  • FE FE & FE2 Rule Updates #39484engine
  • HP E/O: Improve Consistency of the Spec Lines #39500other
  • HP Request to Reclassify BMW 2002 Into H Production #39567cars added
  • AS 1994 Mustang Spec Line Request #39104engine
  • HP Request to Re-Classsify Datsun SPL-311 to HP from FP #39116cars added
  • HP TR2 Notes E&O #39180weight
  • HP Balance of Power #39187weight +50 lbs
  • HP Alternative BOP Request for 84-87 Honda CRX/Civic #39223tyres & wheels
  • AS Cadillac CTS-V BOP Weight Change #38640weight -50 lbs
  • HP Please Lower Weight of 280Z #38871weight -160 lbs
  • HP Miata Weight Adjustment Follow Up #38949weight -25 lbs
  • HP Weight Break for 1098 Midget / Sprite #38970weight -80 lbs
  • HP HP Volvo 142 spec omission #38994engine
  • HP HP Mini DOHC 1.6 #38996engine
  • HP Add to Rabbit description #39019wording
  • HP Clean-up 9.1.5.E.7e #39025suspension & brakes
  • HP Add TB size to Ford Mustang (94-98) Spec Line #39130induction
  • FE FE & FE2 Bubble Tail #38978other
  • HP HP Plymouth Arrow spec omission #38995wording
  • HP Add Wheel Diameter to Appendix G #39008tyres & wheels
  • HP Add TB ID tolerance to general Prod rules #39009induction
Road America Runoffs 20252025-09-292:26.792Andrew McDermid · fastest of 11 · top 5 within 3.9s+0.214s (+0.15%)2:29.232Gregory Eaton · fastest of 10 · top 5 within 4.0s+2.803s (+1.91%)151.5Andrew McDermid+1.9 mph (+1.3%)2:43.111Bobby Gossett · fastest of 32 · top 5 within 0.3s+2.005s (+1.24%)2:44.430Kyle Greenhill · fastest of 28 · top 5 within 0.3s+2.944s (+1.82%)119.3Francisco Barroso-0.6 mph (-0.5%)+15.198squal +16.319s110.2%qual 111.1%2:38.785Steve Sargis · fastest of 17 · top 5 within 1.9s+0.340s (+0.21%)2:38.270Steve Sargis · fastest of 14 · top 5 within 2.4s+0.539s (+0.34%)124.9Chris Schaafsma+2.1 mph (+1.7%)+9.038squal +11.993s106.1%qual 108.2%
34 rule changes (AS: 11, FE: 2, SM: 4, HP: 17)12 weight · 6 engine · 5 induction · 2 cars added · 2 suspension & brakes · 1 tyres & wheels · 1 wording · 5 othershowhide
  • FE FE & FE2 Rule Updates #38901weight
  • AS RE: Previous Letter 37695 Update #38245weight -75 lbs
  • HP BMW Z4 update #38490induction
  • HP EP Fiat 124 Spider Competition Adjustment Request #38498weight -50 lbs
  • AS Errors and Omissions #38234engine
  • HP Base Weight Adjustment for H-Production X1/9 Spec Lines #38255weight -50 lbs
  • SM SMX Data Submission - Penalties #38248other
  • SM SMX Penaly Clarification updated language #38337wording
  • AS Errors and Omission #38055induction
  • AS Request to Add LS1/LS6 Intakes for 5.3L Truck Engine EnO #38197engine
  • SM Clarify Tire Marking Regs #38005tyres & wheels
  • AS Flotek Head Plunge Cut Inconsistencies #37502other
  • AS Notes clean up #37693weight
  • HP Request for Classification of Chevrolet Spark #37755cars added
  • HP Request to Lower Ford Festiva Minimum Weight to 1600 LBS #37939weight -100 lbs
  • AS Race memo #37902engine
  • HP Request Competition Adjustment to BMW Z3 2.5L #37120induction
  • HP HP Class Adjustments #37459weight +50 lbs
  • HP Interpretation of Production Rules on Mirrors #37235other
  • HP Weight Reduction for Honda S2000 #37466weight
  • HP Mazda 1999 Miata 1.8L #37488weight -50 lbs
  • HP MINI Cooper (07-13) Spec Line Correction: Errors and Omissions #37560engine
  • HP Effective date for Jan 2025 GCR updates #37654induction
  • AS Increase Coyote Engine Restrictor to 80mm #36177induction
  • AS Performance Pack for 2015+ Mustang #36867weight
  • AS Gear Ratios #37131engine
  • AS ECU specs for LS engine #37208engine
  • HP Request to Reduce Weight of BMW 325i/is E30 (84-91) Spec Line #37119weight -50 lbs
  • HP Request to Update 1988-1991 Civic to Match 1988-1991 CRX #37444weight -70 lbs
  • FE Brake Line to A-Arm Covers #37110suspension & brakes
  • HP MINI Cooper Spec Line Correction - Rear Brake Rotor Diameter #37176suspension & brakes
  • SM E&O SMX Regs 9.1.7.1.D.5.u-.w #37070other
  • HP 1275 HP Spridget Level 2 Only #36518other
  • HP Request for Classification of 1989-1994 Suzuki Swift GT 16V Twin #36858cars added
Road America Runoffs 20242024-10-012:26.578Gregory Eaton · fastest of 18 · top 5 within 2.6s-0.467s (-0.32%)2:26.429Gregory Eaton · fastest of 18 · top 5 within 2.5s-1.239s (-0.84%)149.6Gregory Eaton+0.4 mph (+0.3%)2:41.106Ethan Goulart · fastest of 49 · top 5 within 0.5s-1.103s (-0.68%)2:41.486Brett Kowalski · fastest of 43 · top 5 within 0.3s-2.262s (-1.38%)119.9Alex Bertagnoli-1.4 mph (-1.2%)+15.057squal +14.528s110.3%qual 109.9%2:38.445Chuck Mathis · fastest of 20 · top 5 within 3.4s-1.250s (-0.78%)2:37.731Chuck Mathis · fastest of 19 · top 5 within 2.3s-9.713s (-5.80%)122.8William Trainer-0.3 mph (-0.2%)+11.302squal +11.867s107.7%qual 108.1%
42 rule changes (AS: 11, FE: 5, SM: 4, HP: 22)11 weight · 8 cars added · 6 engine · 3 tyres & wheels · 1 induction · 1 suspension & brakes · 3 wording · 9 othershowhide
  • AS Mustang transmission ratios #36662engine
  • FE Protest Fee Clarification #36540wording
  • FE Update on Letter 36620 with new Hoosier Contingency Decal Info #36625tyres & wheels
  • SM SMX Camera Rule Correction #36496wording
  • SM AIM ECU Protocol #36556engine
  • SM OE versus OEM Definitons #36608other
  • SM Shifter Bushing #36611suspension & brakes
  • FE Hoosier Tire Decal Placement #36435tyres & wheels
  • HP Errant entry in HP production line item #36231other
  • AS Request for Classification of 2018-2023 mustang In #35764cars added
  • HP NIssan 300ZX Z31 to EP #35830cars added
  • HP RX7 1993 and Up Request In EP Spec Lines, classify #36031cars added
  • HP Clean-up Multiple EP RX-8 Spec Lines In EP #36156wording
  • AS 6th gen Camaro limited prep #35733cars added
  • AS Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V8 LS1 Alum BLK #35825cars added
  • AS Full Prep Head #35891other
  • HP Replace plastic panels #35875other
  • AS Restricted Prep Aftermarket Parts Request #35682other
  • AS Allowance of 11 #35824tyres & wheels
  • AS Request to Classify 1970-1981 Camaro and Firebird in AS #33659cars added
  • AS Fuel Cell 12 #34194other
  • AS Please Classify the 6th Gen Into AS. #35448cars added
  • AS spec lines #35713cars added
  • HP GCR Correction - Redundant HP Spec Lines #35623engine
  • HP Update 1988-1991 Civic to Match 1988-1991 CRX #35399weight
  • FE Update FE Rain Light Rule #34707other
  • FE FE/FE2 rule update #35269other
  • HP Request to Review Z3 2.5 Spec Line #35073weight +50 lbs
  • HP Parity in HP #35138other
  • HP Spitfire classification #35224engine
  • HP Miata Alternate Head #35253weight -50 lbs
  • HP Triumph GT6 Adjustments #35255weight
  • HP Honda S2000 throttle body #35272induction
  • HP Front Header/Nose Panel Alternate Material For 84-87 CRX #35301engine
  • HP Correction within Triumph TR8 Spec Line #35315engine
  • HP Correction to EP 924S/944 Spec Line #35317weight
  • HP Review Classification of HP Mazda 2 #35318weight +75 lbs
  • HP Request to Adjust Weight of 1988-1991 CRX/Civic #35115weight -70 lbs
  • HP Porsche 944/924S Rule Change Request #35002weight
  • HP FP and HP Toyota Corolla #35030weight -43 lbs
  • HP Weight Reduction for Mazda 626 #35031weight -100 lbs
  • HP Triumph GT6 Adjustments #35054weight -30 lbs
Virginia International Raceway Runoffs 20232023-09-232:03.082Daniel Richardson · fastest of 11 · top 5 within 2.2s+0.920s (+0.75%)2:04.120Gregory Eaton · fastest of 9 · top 5 within 3.0s-0.458s (-0.37%)154.6James Jost+3.7 mph (+2.5%)2:14.986Danny Steyn · fastest of 52 · top 5 within 0.1s+0.322s (+0.24%)2:16.229Julian DaCosta · fastest of 46 · top 5 within 0.3s-2.878s (-2.07%)120.3Jim Drago+1.1 mph (+0.9%)+12.109squal +11.904s109.8%qual 109.7%2:14.029Chris Schaafsma · fastest of 25 · top 5 within 2.7s+0.077s (+0.06%)2:14.681Chris Schaafsma · fastest of 24 · top 5 within 2.5s+2.878s (+2.18%)119.4William Trainer-0.8 mph (-0.7%)+10.561squal +10.947s108.5%qual 108.9%
15 rule changes (AS: 4, FE: 3, SM: 1, HP: 7)3 induction · 3 weight · 2 engine · 2 suspension & brakes · 1 aero · 1 cars added · 1 tyres & wheels · 2 othershowhide
  • HP Larger chokes #34681induction
  • AS Crate Motor Part Numbers #32944engine
  • AS Request wheel size change #33007tyres & wheels
  • AS Alternative Upper Front Control Arms for Dodge Challenger #33352engine
  • AS Front Brake Caliper Adapters for Dodge Challenger #33353suspension & brakes
  • HP Correct Intake Valve Size on 1500cc Midget/Spitfire #34419induction
  • HP ITC to FP? #34286other
  • HP Request to Classify Sonic and Fiesta in HP #34264cars added
  • FE Update FE SADEV Transmission Rule #33883other
  • HP MGB HP Weight Break and/or Hybrid 1/2 Prep in HP #33127weight
  • HP Datsun 510 Help #33568weight -50 lbs
  • HP Review Limited Prep Port Matching Rules #33600induction
  • SM BOP for NB1 and NB2 #32309weight
  • FE Brake bias adjuster clarification #33084suspension & brakes
  • FE FE Front and Rear Wing Update & Clarification #33089aero
Virginia International Raceway Runoffs 20222022-09-242:02.162Kurt Rezzetano · fastest of 13 · top 5 within 2.3s-0.776s (-0.63%)2:04.578Gregory Eaton · fastest of 11 · top 5 within 2.9s+0.678s (+0.55%)150.9James Jost-3.0 mph (-2.0%)2:14.664Danny Steyn · fastest of 60 · top 5 within 0.2s+0.112s (+0.08%)2:19.107Travis Wiley · fastest of 58 · top 5 within 0.9s+2.648s (+1.94%)119.2Jonathan Neudorf-0.6 mph (-0.5%)+14.529squal +12.502s111.7%qual 110.2%2:13.952Steve Sargis · fastest of 23 · top 5 within 3.9s-0.870s (-0.65%)2:11.803Vesa Silegren · fastest of 21 · top 5 within 6.3s-3.259s (-2.41%)120.2Chris Schaafsma-4.7 mph (-3.8%)+7.225squal +11.790s105.8%qual 109.7%
39 rule changes (AS: 9, FE: 4, SM: 1, HP: 25)7 engine · 7 weight · 6 induction · 5 cars added · 3 tyres & wheels · 2 suspension & brakes · 3 wording · 6 othershowhide
  • AS Request to add Hoosier W2 #33031other
  • AS correction of Dodge Challenger specification line #33151wording
  • FE Engine Heat Shield & Insulation #33019engine
  • HP Request to classify VW New Beetle 2.5L in EP #32725cars added
  • HP Request Rotary Injection on Dual Y manifold #32775engine
  • HP Request for Corrado Stroke & Displacement Correction #32985engine
  • AS Request CTS-V Spec Line Error Correction #30242weight
  • FE Update FE/FE2 Tire Rule #32613tyres & wheels
  • FE Master cylinder clarification #32669engine
  • HP Subaru BRZ Model Years #32500other
  • HP EP MX-5 Global Cup Car #32218weight
  • HP Please Class BMW 128i in EP #32370cars added
  • HP Inconsistency in Body Work Descriptions #32396other
  • HP Mazda RX8 with 13b Rotary #32170induction
  • HP Request Idle control valve clarification #32178engine
  • HP Classify VW New Beetle in HP. #32241cars added
  • SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes
  • HP Weight Change for Competition Adjustment #31182weight +45 lbs
  • HP EP Adjustments #31858induction
  • HP 1999 3.8L Ford Mustang to EP? #31635weight
  • HP Improved Touring Tires #32064tyres & wheels
  • HP Throttle Body and Idle Air #31800induction
  • HP Incorrect Valve Size Changes in Jan 2022 GCR for FIAT X1/9 #31990engine
  • AS Proposed Revisions to SCCA GCR 2021 Appendix M, Part 3 #30295other
  • AS specification line consolidation and correction #31846wording
  • AS correction of SMG specification line #31847suspension & brakes
  • AS Alternate cylinder heads for full prep engine builds - Evaluation #31851engine
  • HP Porsche 968 Engine Questions #31478induction
  • HP PCS E. 2. n. 4. Add Axle Shaft to Allow FWD the Same Freedom #31592tyres & wheels
  • HP Weight Adjustment To Fiat X1/9 Spec Lines, H-Production #31653weight -50 lbs
  • HP 1500 Midget #31665cars added
  • HP BMW Z3 2.5L Spec Line #31724induction
  • HP Request weight requirement for 1500 MG Midget #31802weight
  • FE Two FE2 Rule Updates #31524other
  • HP 944S2 Restrictor #31396induction
  • HP Classing Clarification for 1986 Toyota Corolla FX16 #31527cars added
  • AS Request for adjustable Front Upper Control Arms on 4th Gen F-Body #30457other
  • AS Request Pontiac GTO tire size change #30881weight
  • HP E&O; MR2 Track #31120wording
Indianapolis Motor Speedway Runoffs 20212021-09-251:50.427Drew Cattell · fastest of 31 · top 5 within 1.9s+5.207s (+4.95%)1:50.606Gregory Eaton · fastest of 28 · top 5 within 1.7s-0.901s (-0.81%)153.8James Jost1:57.695Brian Henderson · fastest of 90 · top 5 within 0.5s-0.611s (-0.52%)1:58.837Brian Henderson · fastest of 88 · top 5 within 0.3s-0.263s (-0.22%)119.8Kyle Greenhill+8.231squal +7.268s107.4%qual 106.6%1:54.417Steve Sargis · fastest of 42 · top 5 within 3.7s-3.004s (-2.56%)1:56.188Steve Sargis · fastest of 42 · top 5 within 2.9s-1.381s (-1.17%)122.0William Trainer+5.582squal +3.990s105.0%qual 103.6%
40 rule changes (AS: 14, FE: 4, SM: 1, HP: 21)11 cars added · 11 weight · 5 engine · 4 suspension & brakes · 2 induction · 1 tyres & wheels · 4 wording · 2 othershowhide
  • HP Request to Allow F22c Engine for 2000-2003 Honda S2000 #30548engine
  • HP Request a review of the S14 240SX in EP. #30873weight -200 lbs
  • FE FE Tire Rule Changes #30754tyres & wheels
  • FE Radiator Screens Clarification #30792wording
  • HP Lotus/Caterham 7 America Request #30392engine
  • HP Request to classify ITC Plymouth Arrow #30588cars added
  • HP Reclassification of the 1984/85 BMW 318i from FP to HP #30661cars added
  • HP Reclassify Daimler SP 250 #30721cars added
  • AS Request CTS-V Spec Line Error Correction #30242weight
  • AS Request to consolidate SN95 Mustang '94-'04 Mustang spec lines #30428cars added
  • AS American Sedan Transmission Rule Change Request #30595weight
  • AS Correction to specifications inadvertently deleted #30691wording
  • AS weight adjustments #30700weight +50 lbs
  • FE FE Radiator Screens #30575other
  • HP 924 Brakes- and Thank You. #30614suspension & brakes
  • HP Clarify Application of Percentage Based Weight Penalties #30669weight
  • HP Correct Induction Error on new HP Mazda 626 Spec Line #30702induction
  • HP Volvo 142 spec line complete. #29479cars added
  • HP Request to Classify 93-98 Volkswagen Golf to HP #29790cars added
  • HP Appeal of Request to Move Porsche 924 to HP #30132cars added
  • HP Change Classification of 84-87 Mazda 626 from FP to HP #30350cars added
  • HP Fiat X1/9 brake rotors #30423suspension & brakes
  • HP Request to Classify 2012-2015 MINI Cooper Coupe in HP #30167cars added
  • HP Request clarification on VW 1.8 Rabbit GTI Spec Line #30368wording
  • SM Updates - Obsolete Parts & BOP Parts #30438other
  • AS AS Mustang LP 4.6 3V Classification Transmission Request #29886weight
  • AS Request CF driveshaft on CTS-V for durability improvement #30117engine
  • AS Adjustment to model years of 5th generation RP Camaro #30348engine
  • AS Request for 2015 -2017 Ford Mustang Spec Line #29514cars added
  • AS Request Trunk lid / Rear Hatch clarification #29591wording
  • AS Common Weight for CTS-V Tire #29759weight
  • AS Correction to specifications inadvertently deleted #30041cars added
  • HP Alternate Front Brake Rotors and Calipers for EP AH 3000 #29893suspension & brakes
  • AS Request Additional Engine Options for Dodge Challenger Spec Line #29543engine
  • AS Rule simplification spec line communization #29824weight
  • FE FE / FE2 Spring Updates #29689suspension & brakes
  • HP Mk2 VW Consistency and Cleanup of FP and HP Spec Lines #29195weight -50 lbs
  • HP Correct Wording for Level 1 and Level 2 Induction Systems #29406induction
  • HP Weight Reduction for Datsun Roadster #29409weight -75 lbs
  • HP EP TR8 Adjustment #29512weight -100 lbs
Road America Runoffs 20202020-10-022:27.045Gregory Eaton · fastest of 18 · top 5 within 0.6s2:27.668Gregory Eaton · fastest of 15 · top 5 within 1.5s149.2Gregory Eaton2:42.209Kyle Greenhill · fastest of 77 · top 5 within 0.5s2:43.748Preston Pardus · fastest of 75 · top 5 within 1.0s121.3Kyle Greenhill+16.080squal +15.164s110.9%qual 110.3%2:39.695Daniel Meller · fastest of 19 · top 5 within 3.3s2:47.444Steve Sargis · fastest of 15 · top 5 within 6.1s123.1William Trainer+19.776squal +12.650s113.4%qual 108.6%
44 rule changes (AS: 16, FE: 5, SM: 2, HP: 21)9 engine · 6 induction · 6 weight · 5 cars added · 5 suspension & brakes · 3 aero · 3 tyres & wheels · 2 wording · 5 othershowhide
  • FE FE Gurney Flap Spec Update #29445aero
  • HP 84-87 Toyota Corolla HP Wheel Diameter Allowance Proposal E&O #29458tyres & wheels
  • SM Radiator E&O Clarifications #29294engine
  • AS Dodge Challenger AS Spec Line Clarification #28698induction
  • AS Dodge Challenger AS Spec Line Clarification #2 #28699aero
  • HP EP BMW Z3 Rule Clarification #28998engine
  • SM Modifications to prevent failures of Rear Brake Caliper Pin #28953suspension & brakes
  • AS Support for R-Type Specification Tires #27450tyres & wheels
  • AS Spec Tire Request #27519tyres & wheels
  • AS Restrictor Plate Change for RP 2011+ Mustang with Coyote Engine #27675induction
  • AS 2005-2009 Restricted Prep 4.6 3V #27908engine
  • AS Request for 2005-2009 Restricted Prep 4.6 3V Parts #27909engine
  • AS Request for Full Preparation Classification for 2010-2014 Camaro #28030other
  • AS Cylinder Heads #28696engine
  • AS Request for Max Rotor Diameter Change #28748suspension & brakes
  • AS Request increase rotor diameter #28797other
  • HP Request to Classify Porsche 911 2.0L #28456cars added
  • HP Request Dual Carbs for 1.8 VW GTI Mk1 #28922engine
  • FE FE Gurney flap wicker clarification #28885aero
  • HP BMW Cylinder Head Casting and Part Numbers #28708engine
  • AS weight adjustments for 2020 season #28785weight -50 lbs
  • FE FE spring rule update changed to November 1, 2020 #28814suspension & brakes
  • HP Request to Classify 1990-1994 Mazda Protege #28381cars added
  • HP Error in Mini Cooper Spec Line #28713wording
  • HP Caterham 7 Spec Line #28498engine
  • HP Letter #27917 #28085induction
  • HP Request to Classify 2007 - 2013 Mini Cooper Convertible #28111cars added
  • HP Allow HP Datsun 510 Under Level 2 to Utilize Datsun Z Brakes #28121suspension & brakes
  • HP Request to allow 40 DCOE carb for the Datsun 510 #28195induction
  • HP Request Ford Fiesta Weight Adjustment #28337weight
  • AS Rear Trailing Arms #28007suspension & brakes
  • AS Weight reduction for cars running iron heads #28010weight
  • AS 05-10 Mustang with HR cam classification #28226cars added
  • AS 10-15 Camaro Full Prep classification #28227cars added
  • HP Request for Help for Datsun 1200 #27934induction
  • FE Request for FE / FE2 preparation rules update #27722weight
  • HP Update years for the Mazda2, Honda Fit, & Mini #27782other
  • HP Allow Dry Sump, Limited Prep Porsche 914 #27814other
  • HP Please Allow Alternate Rear Axle Housing for RWD Toyota Corolla #27854other
  • HP Request to List Mazda Miata Throttle Body Size #27907induction
  • HP HP VW Rabbit Convertible 1.6L #1922 and 32mm chokes #27917weight
  • FE FE / FE2 Update Rules #27624weight
  • HP Request to Correct Track of 1988-91 Honda Civic #27487wording
  • HP Re-organize Prep2 Cylinder Head Rules for Clarity & Consistency #27661engine
Virginia International Raceway Runoffs 20192019-10-052:02.938Gregory Eaton · fastest of 17 · top 5 within 0.8s2:03.900James Jost · fastest of 16 · top 5 within 2.1s153.9James Jost1:54.710Mark Snyder · fastest of 9 · top 5 within 1.3s1:55.648Mark Snyder · fastest of 9 · top 5 within 0.9s135.5James Libecco-8.252squal -8.228s93.3%qual 93.3%2:14.552Todd Buras · fastest of 60 · top 5 within 0.2s2:16.459Elivan Goulart · fastest of 56 · top 5 within 0.4s119.8Jim Drago+12.559squal +11.614s110.1%qual 109.4%2:14.822Steve Sargis · fastest of 29 · top 5 within 1.1s2:15.062Ron Bartell · fastest of 28 · top 5 within 1.2s124.9William Trainer+11.162squal +11.884s109.0%qual 109.7%
23 rule changes (AS: 4, FE: 5, SM: 4, HP: 10)6 tyres & wheels · 3 suspension & brakes · 3 weight · 2 cars added · 2 induction · 1 engine · 2 wording · 4 othershowhide
  • AS Request to add SMG to 9.1.6.B.1 AS Intent #27140other
  • FE FE Wet Tire E&O #27365tyres & wheels
  • HP Request bodywork for Austin Healey Bugeye Sprite MK1 #27106other
  • HP Request to classify the GMX5 2019 #27263cars added
  • HP level one susp. component rule #27270suspension & brakes
  • HP Clarification of Carb Rules - Prep 1 #27300induction
  • HP Clarification of Carb Rules - Prep 2 #27301induction
  • AS Request Ride Height Clarification #26598suspension & brakes
  • HP Request Miata Eligibility - 2003 #27121other
  • FE FE Tire Update #27029tyres & wheels
  • AS Request to Revert to 2017 Weights #25885weight
  • FE FE Anti-Roll Bar Clarification #26912suspension & brakes
  • FE FE / FE2 Updated Bubble Tail Rule #26913other
  • HP Rollcenter Correction Clarification #25873tyres & wheels
  • HP Hardtops #26476wording
  • FE Request to Update Hoosier Rain Tire Part Number for the FE cars #26235tyres & wheels
  • HP Do Something About the Toyota Yaris In H Production #25834weight +130 lbs
  • HP Request to Allow 2011+ Fiesta to Change Bolt Pattern on Wheels #25929tyres & wheels
  • SM Request to allow aftermarket fuel filters. #26370wording
  • AS SMG Mustang eligibility in American sedan #26224cars added
  • SM Request 99-00 replacement Wire harnesses #25602engine
  • SM Organize and Clarify 9.1.7.C.1.o. #25913weight
  • SM Strike Tire Tread Language #26123tyres & wheels
Sonoma Raceway Runoffs 20182018-10-101:47.782Andrew McDermid · fastest of 12 · top 5 within 1.9s1:50.345John Heinricy · fastest of 10 · top 5 within 2.3s105.0Kevin Fandozzi1:37.517Mark Snyder · fastest of 10 · top 5 within 1.4s1:38.504Lee Rackley · fastest of 10 · top 5 within 0.8s124.7Quinten Nelson-11.841squal -10.265s89.3%qual 90.5%1:54.355Ken Sutherland · fastest of 48 · top 5 within 0.7s1:55.278Michael Carter · fastest of 48 · top 5 within 0.3s102.2Danny Steyn+4.933squal +6.573s104.5%qual 106.1%1:54.070Brian Linn · fastest of 16 · top 5 within 2.8s1:54.434Jason Isley · fastest of 16 · top 5 within 3.3s109.3Michael H Miller+4.089squal +6.288s103.7%qual 105.8%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:45.220James Jost · fastest of 29 · top 5 within 6.7s1:51.507Bryan Long · fastest of 28 · top 5 within 0.9s1:39.177Elliot Finlayson · fastest of 35 · top 5 within 1.3s1:39.726Elliot Finlayson · fastest of 35 · top 5 within 0.8s-11.781squal -6.043s89.4%qual 94.3%1:58.306Chris Haldeman · fastest of 86 · top 5 within 0.5s1:59.100Michael Gagliardo · fastest of 83 · top 5 within 0.6s+7.593squal +13.086s106.8%qual 112.4%1:57.421Jason Isley · fastest of 46 · top 5 within 0.9s1:57.569Vesa Silegren · fastest of 40 · top 5 within 1.1s+6.062squal +12.201s105.4%qual 111.6%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:30.651Tom Sloe · fastest of 22 · top 5 within 3.6s1:33.424Edward Hosni · fastest of 20 · top 5 within 1.0s1:27.636Scott Rettich · fastest of 9 · top 5 within 1.7s1:30.563Hanna Zellers · fastest of 9 · top 5 within 2.2s-2.861squal -3.015s96.9%qual 96.7%1:40.514Justin Hille · fastest of 45 · top 5 within 0.3s1:40.764Michael Carter · fastest of 44 · top 5 within 0.3s+7.340squal +9.863s107.9%qual 110.9%1:39.954Jason Isley · fastest of 34 · top 5 within 1.5s1:40.442Jason Isley · fastest of 34 · top 5 within 0.4s+7.018squal +9.303s107.5%qual 110.3%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-212:01.746Tom Sloe · fastest of 22 · top 5 within 2.6s2:02.922Andy McDermid · fastest of 19 · top 5 within 2.2s1:57.824Scott Rettich · fastest of 16 · top 5 within 1.0s1:59.040Scott Rettich · fastest of 16 · top 5 within 1.3s-3.882squal -3.922s96.8%qual 96.8%2:18.661Andrew Carbonell · fastest of 62 · top 5 within 0.6s2:24.067Todd Lamb · fastest of 59 · top 5 within 0.8s+21.145squal +16.915s117.2%qual 113.9%2:17.369Jason Isley · fastest of 18 · top 5 within 2.5s2:17.981Alan (Aj) Hulse · fastest of 17 · top 5 within 1.1s+15.059squal +15.623s112.3%qual 112.8%

By track

TrackEvents Typical % of AS 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 AS'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.