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BoP Lab / Classes / F5

F5 vs SM vs FM vs EP pace at every track

Lap times across years say as much about the weather as the class. % of F5 is each class's best lap as a share of F5'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-SpecvsEP×F5×FAFCFE2FFvsFM×FPFVFXGT1GT2GTXHPPP2vsSM×SMXSRF3STLSTUT1T2T3T4Show 49 inactive classes
Series
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: F5 100.0% of F5 Matthew Strand, Daytona International Speedway Runoffs 2015 race · SM 98.1% of F5 Travis Wiley, Virginia International Raceway Runoffs 2022 race · FM 95.5% of F5 Bryce Cornet, Sonoma Raceway Runoffs 2018 race · EP 101.5% of F5 Kip Van Steenburg, Daytona International Speedway Runoffs 2015 race

1:201:402:002:202:4015 rule changes between Runoffs 2018 and Runoffs 201915 ▾22 rule changes between Runoffs 2019 and Runoffs 202022 ▾18 rule changes between Runoffs 2020 and Runoffs 202118 ▾28 rule changes between Runoffs 2021 and Runoffs 202228 ▾14 rule changes between Runoffs 2022 and Runoffs 202314 ▾18 rule changes between Runoffs 2023 and Runoffs 202418 ▾18 rule changes between Runoffs 2024 and Runoffs 202518 ▾23 rule changes between Runoffs 2025 and Runoffs 202623 ▾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)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)FM race best at Runoffs 2015: 1:58.029 (Joseph Burton-Harris)FM race best at Runoffs 2016: 1:27.922 (Jacob Loomis)FM race best at Runoffs 2017: 1:41.146 (Jarret Voorhies)FM race best at Runoffs 2018: 1:37.909 (Bryce Cornet)FM race best at Runoffs 2019: 2:15.816 (Bryce Cornet)FM qualifying best at Runoffs 2015: 1:57.804 (Joseph Burton-Harris)FM qualifying best at Runoffs 2016: 1:26.043 (Jacob Loomis)FM qualifying best at Runoffs 2017: 1:41.231 (Jarret Voorhies)FM qualifying best at Runoffs 2018: 1:37.598 (Bryce Cornet)FM qualifying best at Runoffs 2019: 1:55.124 (Bryce Cornet)EP race best at Runoffs 2015: 2:05.109 (Kip Van Steenburg)EP race best at Runoffs 2016: 1:34.266 (Michael Galati)EP race best at Runoffs 2017: 1:50.396 (Matt Reynolds)EP race best at Runoffs 2018: 1:46.518 (Glen McCready)EP race best at Runoffs 2019: 2:01.631 (Jesse Prather)EP race best at Runoffs 2020: 2:29.047 (Jesse Prather)EP race best at Runoffs 2021: 1:49.928 (Jesse Prather)EP race best at Runoffs 2022: 2:30.855 (Jesse Prather)EP race best at Runoffs 2023: 2:04.050 (Greg Ira)EP race best at Runoffs 2024: 2:27.869 (Tyler Ladd)EP race best at Runoffs 2025: 2:28.756 (Tyler Ladd)EP race best at Runoffs 2026: 2:27.869 (Jon Brakke)EP qualifying best at Runoffs 2015: 2:03.794 (Kip Van Steenburg)EP qualifying best at Runoffs 2016: 1:33.847 (Michael Galati)EP qualifying best at Runoffs 2017: 1:49.597 (Matt Reynolds)EP qualifying best at Runoffs 2018: 1:45.828 (Glen McCready)EP qualifying best at Runoffs 2019: 2:00.987 (Jesse Prather)EP qualifying best at Runoffs 2020: 2:27.322 (Jesse Prather)EP qualifying best at Runoffs 2021: 1:48.181 (Jesse Prather)EP qualifying best at Runoffs 2022: 2:02.326 (Jesse Prather)EP qualifying best at Runoffs 2023: 2:03.215 (John Hainsworth)EP qualifying best at Runoffs 2024: 2:26.803 (Tyler Ladd)EP qualifying best at Runoffs 2025: 2:27.293 (Jon Brakke)EP qualifying best at Runoffs 2026: 2:29.239 (Jon Brakke)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
F5SMFMEPsolid race · dashed qualifying · slower is lower
95%100%105%110%115%15 rule changes between Runoffs 2018 and Runoffs 201915 ▾22 rule changes between Runoffs 2019 and Runoffs 202022 ▾18 rule changes between Runoffs 2020 and Runoffs 202118 ▾28 rule changes between Runoffs 2021 and Runoffs 202228 ▾14 rule changes between Runoffs 2022 and Runoffs 202314 ▾18 rule changes between Runoffs 2023 and Runoffs 202418 ▾18 rule changes between Runoffs 2024 and Runoffs 202518 ▾23 rule changes between Runoffs 2025 and Runoffs 202623 ▾F5 race best at Runoffs 2015: 100.0% of F5's (Matthew Strand)F5 race best at Runoffs 2016: 100.0% of F5's (Steven Thompson)F5 race best at Runoffs 2017: 100.0% of F5's (Wiley Clinton McMahan)F5 race best at Runoffs 2018: 100.0% of F5's (David Lapham)F5 race best at Runoffs 2019: 100.0% of F5's (Wiley Mcmahan)F5 race best at Runoffs 2020: 100.0% of F5's (James Weida)F5 race best at Runoffs 2021: 100.0% of F5's (Sven de Vries)F5 race best at Runoffs 2022: 100.0% of F5's (Sven de Vries)F5 qualifying best at Runoffs 2015: 100.0% of F5's (W. Clint McMahan)F5 qualifying best at Runoffs 2016: 100.0% of F5's (Calvin Stewart)F5 qualifying best at Runoffs 2017: 100.0% of F5's (Wiley Clinton McMahan)F5 qualifying best at Runoffs 2018: 100.0% of F5's (Jeff Jorgenson)F5 qualifying best at Runoffs 2019: 100.0% of F5's (Wiley Mcmahan)F5 qualifying best at Runoffs 2020: 100.0% of F5's (Calvin Stewart)F5 qualifying best at Runoffs 2021: 100.0% of F5's (Ryan Mayfield)F5 qualifying best at Runoffs 2022: 100.0% of F5's (James Weida)SM race best at Runoffs 2015: 116.8% of F5's (Todd Lamb)SM race best at Runoffs 2016: 112.1% of F5's (Michael Carter)SM race best at Runoffs 2017: 115.8% of F5's (Michael Gagliardo)SM race best at Runoffs 2018: 112.5% of F5's (Michael Carter)SM race best at Runoffs 2019: 116.1% of F5's (Elivan Goulart)SM race best at Runoffs 2020: 115.8% of F5's (Preston Pardus)SM race best at Runoffs 2021: 115.2% of F5's (Brian Henderson)SM race best at Runoffs 2022: 98.1% of F5's (Travis Wiley)SM qualifying best at Runoffs 2015: 113.8% of F5's (Andrew Carbonell)SM qualifying best at Runoffs 2016: 113.5% of F5's (Justin Hille)SM qualifying best at Runoffs 2017: 114.7% of F5's (Chris Haldeman)SM qualifying best at Runoffs 2018: 112.3% of F5's (Ken Sutherland)SM qualifying best at Runoffs 2019: 114.6% of F5's (Todd Buras)SM qualifying best at Runoffs 2020: 115.1% of F5's (Kyle Greenhill)SM qualifying best at Runoffs 2021: 114.7% of F5's (Brian Henderson)SM qualifying best at Runoffs 2022: 114.4% of F5's (Danny Steyn)FM race best at Runoffs 2015: 95.7% of F5's (Joseph Burton-Harris)FM race best at Runoffs 2016: 97.9% of F5's (Jacob Loomis)FM race best at Runoffs 2017: 98.3% of F5's (Jarret Voorhies)FM race best at Runoffs 2018: 95.5% of F5's (Bryce Cornet)FM race best at Runoffs 2019: 115.5% of F5's (Bryce Cornet)FM qualifying best at Runoffs 2015: 96.7% of F5's (Joseph Burton-Harris)FM qualifying best at Runoffs 2016: 97.2% of F5's (Jacob Loomis)FM qualifying best at Runoffs 2017: 98.2% of F5's (Jarret Voorhies)FM qualifying best at Runoffs 2018: 95.9% of F5's (Bryce Cornet)FM qualifying best at Runoffs 2019: 98.1% of F5's (Bryce Cornet)EP race best at Runoffs 2015: 101.5% of F5's (Kip Van Steenburg)EP race best at Runoffs 2016: 104.9% of F5's (Michael Galati)EP race best at Runoffs 2017: 107.3% of F5's (Matt Reynolds)EP race best at Runoffs 2018: 103.9% of F5's (Glen McCready)EP race best at Runoffs 2019: 103.5% of F5's (Jesse Prather)EP race best at Runoffs 2020: 105.4% of F5's (Jesse Prather)EP race best at Runoffs 2021: 106.6% of F5's (Jesse Prather)EP race best at Runoffs 2022: 106.3% of F5's (Jesse Prather)EP qualifying best at Runoffs 2015: 101.6% of F5's (Kip Van Steenburg)EP qualifying best at Runoffs 2016: 106.0% of F5's (Michael Galati)EP qualifying best at Runoffs 2017: 106.3% of F5's (Matt Reynolds)EP qualifying best at Runoffs 2018: 103.9% of F5's (Glen McCready)EP qualifying best at Runoffs 2019: 103.1% of F5's (Jesse Prather)EP qualifying best at Runoffs 2020: 104.5% of F5's (Jesse Prather)EP qualifying best at Runoffs 2021: 105.4% of F5's (Jesse Prather)EP qualifying best at Runoffs 2022: 103.9% of F5's (Jesse Prather)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
F5SMFMEPsolid race · dashed qualifying · each class's best lap as a share of F5's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventF5SMFMEP
Qual best Race best Trap Qual best Race best Trap vs F5 % of F5 Qual best Race best Trap vs F5 % of F5 Qual best Race best Trap vs F5 % of F5 
Road America Runoffs 20262026-09-282:42.173Brett 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%)2:29.239Jon Brakke · fastest of 15 · top 5 within 5.2s+1.946s (+1.32%)2:27.869Jon Brakke · fastest of 15 · top 5 within 5.2s-0.887s (-0.60%)137.0Jon Brakke-3.8 mph (-2.7%)
23 rule changes (SM: 2, EP: 21)6 weight · 5 induction · 4 engine · 1 suspension & brakes · 1 tyres & wheels · 4 wording · 2 othershowhide
  • EP Mini Cooper Compression Ratio #40517engine
  • EP 1996-2000 Honda Civic (CX, DX, VP, LX) with Engine Code D16Y7 #40322engine
  • EP 1275 Midget/Sprit Alternate intake manifold E/O #40370induction
  • EP HP Honda Civic (92-95) #40464weight -70 lbs
  • SM Rear Toe Link #40271other
  • EP Honda S2000 Hardtop #40138other
  • EP Miata track width - errors and omissions #39976wording
  • EP Triumph GT6 Spec Change. #40098induction
  • SM Part Number Change Request #39914wording
  • EP Request to Update E30 BMW Throttle Body Diameter Verbiage #39363induction
  • EP TR2 Notes E&O #39180weight
  • EP Balance of Power #39187weight +50 lbs
  • EP Please Lower Weight of 280Z #38871weight -160 lbs
  • EP Miata Weight Adjustment Follow Up #38949weight -25 lbs
  • EP Weight Break for 1098 Midget / Sprite #38970weight -80 lbs
  • EP HP Volvo 142 spec omission #38994engine
  • EP HP Mini DOHC 1.6 #38996engine
  • EP Add to Rabbit description #39019wording
  • EP Clean-up 9.1.5.E.7e #39025suspension & brakes
  • EP Add TB size to Ford Mustang (94-98) Spec Line #39130induction
  • EP HP Plymouth Arrow spec omission #38995wording
  • EP Add Wheel Diameter to Appendix G #39008tyres & wheels
  • EP Add TB ID tolerance to general Prod rules #39009induction
Road America Runoffs 20252025-09-292:43.111Bobby 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%)2:27.293Jon Brakke · fastest of 21 · top 5 within 2.1s+0.490s (+0.33%)2:28.756Tyler Ladd · fastest of 19 · top 5 within 1.9s+0.887s (+0.60%)140.8Jon Brakke+0.1 mph (+0.1%)
18 rule changes (SM: 4, EP: 14)7 weight · 3 induction · 1 cars added · 1 tyres & wheels · 2 wording · 4 othershowhide
  • EP BMW Z4 update #38490induction
  • EP EP Fiat 124 Spider Competition Adjustment Request #38498weight -50 lbs
  • EP 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
  • SM Clarify Tire Marking Regs #38005tyres & wheels
  • EP Request for Classification of Chevrolet Spark #37755cars added
  • EP Request to Lower Ford Festiva Minimum Weight to 1600 LBS #37939weight -100 lbs
  • EP Request Competition Adjustment to BMW Z3 2.5L #37120induction
  • EP Interpretation of Production Rules on Mirrors #37235other
  • EP Weight Reduction for Honda S2000 #37466weight
  • EP Mazda 1999 Miata 1.8L #37488weight -50 lbs
  • EP Effective date for Jan 2025 GCR updates #37654induction
  • EP Request to Reduce Weight of BMW 325i/is E30 (84-91) Spec Line #37119weight -50 lbs
  • EP Triumph GT6 Adjustments #37112weight
  • SM E&O SMX Regs 9.1.7.1.D.5.u-.w #37070other
  • EP 1275 HP Spridget Level 2 Only #36518other
  • EP NA Miata Track Width Correction #36902wording
Road America Runoffs 20242024-10-012:41.106Ethan 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%)2:26.803Tyler Ladd · fastest of 16 · top 5 within 4.1s-0.519s (-0.35%)2:27.869Tyler Ladd · fastest of 16 · top 5 within 3.6s-1.178s (-0.79%)140.7Bill Miller-1.0 mph (-0.7%)
18 rule changes (SM: 4, EP: 14)7 weight · 3 engine · 2 cars added · 1 induction · 1 suspension & brakes · 2 wording · 2 othershowhide
  • SM SMX Camera Rule Correction #36496wording
  • SM AIM ECU Protocol #36556engine
  • SM OE versus OEM Definitons #36608other
  • SM Shifter Bushing #36611suspension & brakes
  • EP Errant entry in HP production line item #36231other
  • EP NIssan 300ZX Z31 to EP #35830cars added
  • EP RX7 1993 and Up Request In EP Spec Lines, classify #36031cars added
  • EP Clean-up Multiple EP RX-8 Spec Lines In EP #36156wording
  • EP GCR Correction - Redundant HP Spec Lines #35623engine
  • EP Update 1988-1991 Civic to Match 1988-1991 CRX #35399weight
  • EP Request to Review Z3 2.5 Spec Line #35073weight +50 lbs
  • EP Miata Alternate Head #35253weight -50 lbs
  • EP Triumph GT6 Adjustments #35255weight
  • EP Honda S2000 throttle body #35272induction
  • EP Correction within Triumph TR8 Spec Line #35315engine
  • EP Correction to EP 924S/944 Spec Line #35317weight
  • EP Porsche 944/924S Rule Change Request #35002weight
  • EP Triumph GT6 Adjustments #35054weight -30 lbs
Virginia International Raceway Runoffs 20232023-09-232:14.986Danny 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%)2:03.215John Hainsworth · fastest of 24 · top 5 within 4.3s+0.889s (+0.73%)2:04.050Greg Ira · fastest of 22 · top 5 within 5.3s-26.805s (-17.77%)144.6Greg Ira+3.1 mph (+2.2%)
14 rule changes (SM: 1, EP: 13)3 engine · 3 induction · 3 weight · 2 suspension & brakes · 1 wording · 2 othershowhide
  • EP Hub Note Clean Up In EP TR8 Spec Line #34649wording
  • EP Triumph GT6 Adjustments #34662other
  • EP Triumph GT6 Adjustments: Brakes #34663suspension & brakes
  • EP Correct Intake Valve Size on 1500cc Midget/Spitfire #34419induction
  • EP 914-6 Valve Size Correction #34185engine
  • EP Investigate Parity of Z3 #33343induction
  • EP Revise 79-85 RX7 Brake Spec Line Allowance #33293suspension & brakes
  • EP Request alternate carburetors for EP 280z #33405engine
  • EP Fuel Injection 12a Mazda RX3 #33434engine
  • EP Mazda RX3 - Weight Reduction #33436weight -50 lbs
  • EP Request TR8 Dry Sump Allowance #33460other
  • EP Review Limited Prep Port Matching Rules #33600induction
  • EP 280ZX Classification Request #33611weight
  • SM BOP for NB1 and NB2 #32309weight
Virginia International Raceway Runoffs 20222022-09-241:57.689James 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%)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%)-2.755squal +16.975s98.1%qual 114.4%2:02.326Jesse Prather · fastest of 17 · top 5 within 3.2s+1.339s (+1.11%)2:30.855Jesse Prather · fastest of 15 · top 5 within 2.5s+29.224s (+24.03%)141.5Jesse Prather-6.0 mph (-4.1%)+8.993squal +4.637s106.3%qual 103.9%
28 rule changes (F5: 6, SM: 1, EP: 21)8 induction · 6 engine · 3 cars added · 3 weight · 2 tyres & wheels · 1 suspension & brakes · 1 wording · 4 othershowhide
  • EP Request to classify VW New Beetle 2.5L in EP #32725cars added
  • EP Request Rotary Injection on Dual Y manifold #32775engine
  • EP Request for Corrado Stroke & Displacement Correction #32985engine
  • F5 Intake Boots Correction #33028induction
  • F5 Ensure availability of ECU for Rotax engines #32695engine
  • F5 Clarify stepped exhaust header references #32743engine
  • EP Subaru BRZ Model Years #32500other
  • F5 593 carb boot availability and oil pump clarification #32527induction
  • EP EP MX-5 Global Cup Car #32218weight
  • EP Please Class BMW 128i in EP #32370cars added
  • EP Inconsistency in Body Work Descriptions #32396other
  • EP Mazda RX8 with 13b Rotary #32170induction
  • EP Request Idle control valve clarification #32178engine
  • SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes
  • EP EP Adjustments #31858induction
  • EP 1999 3.8L Ford Mustang to EP? #31635weight
  • EP Improved Touring Tires #32064tyres & wheels
  • F5 E&O class name #32194other
  • EP Throttle Body and Idle Air #31800induction
  • EP Porsche 968 Engine Questions #31831engine
  • EP Request weight reduction for 1979-1985 Mazda RX-7 #31833weight
  • EP Porsche 968 Engine Questions #31478induction
  • EP PCS E. 2. n. 4. Add Axle Shaft to Allow FWD the Same Freedom #31592tyres & wheels
  • EP BMW Z3 2.5L Spec Line #31724induction
  • F5 Data Box Mounting Plate #31638other
  • EP 944S2 Restrictor #31396induction
  • EP Classing Clarification for 1986 Toyota Corolla FX16 #31527cars added
  • EP E&O; MR2 Track #31120wording
Indianapolis Motor Speedway Runoffs 20212021-09-251:42.619Ryan 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 Weida1:57.695Brian 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+15.697squal +15.076s115.2%qual 114.7%1:48.181Jesse Prather · fastest of 31 · top 5 within 3.2s-1.416s (-1.29%)1:49.928Jesse Prather · fastest of 27 · top 5 within 0.9s-0.468s (-0.42%)143.4Jon Brakke+6.788squal +5.562s106.6%qual 105.4%
18 rule changes (F5: 3, SM: 1, EP: 14)5 weight · 3 cars added · 3 engine · 2 suspension & brakes · 1 induction · 1 tyres & wheels · 2 wording · 1 othershowhide
  • EP Request to Allow F22c Engine for 2000-2003 Honda S2000 #30548engine
  • EP Request a review of the S14 240SX in EP. #30873weight -200 lbs
  • F5 Clarify allowable assisted shifting systems #30871wording
  • F5 Request to correct terminology #30976tyres & wheels
  • EP Lotus/Caterham 7 America Request #30392engine
  • EP Reclassify Daimler SP 250 #30721cars added
  • EP Clarify Application of Percentage Based Weight Penalties #30669weight
  • F5 Request to Allow Rotax 593 HO Engine #30712engine
  • EP Change Classification of 84-87 Mazda 626 from FP to HP #30350cars added
  • EP Fiat X1/9 brake rotors #30423suspension & brakes
  • EP NC MX-5 year range correction E&O #30503wording
  • EP Please Classify Mazda3 in FP #30165cars added
  • SM Updates - Obsolete Parts & BOP Parts #30438other
  • EP Alternate Front Brake Rotors and Calipers for EP AH 3000 #29893suspension & brakes
  • EP Mk2 VW Consistency and Cleanup of FP and HP Spec Lines #29195weight -50 lbs
  • EP Correct Wording for Level 1 and Level 2 Induction Systems #29406induction
  • EP Weight Reduction for Datsun Roadster #29409weight -75 lbs
  • EP EP TR8 Adjustment #29512weight -100 lbs
Road America Runoffs 20202020-10-022:20.954Calvin Stewart · fastest of 16 · top 5 within 1.8s2:21.391James Weida · fastest of 14 · top 5 within 1.5s143.2Aaron Ellis2:42.209Kyle Greenhill · fastest of 77 · top 5 within 0.5s2:43.748Preston Pardus · fastest of 75 · top 5 within 1.0s121.3Kyle Greenhill+22.357squal +21.255s115.8%qual 115.1%2:27.322Jesse Prather · fastest of 20 · top 5 within 2.5s2:29.047Jesse Prather · fastest of 20 · top 5 within 2.8s141.7Jesse Prather+7.656squal +6.368s105.4%qual 104.5%
22 rule changes (F5: 6, SM: 2, EP: 14)7 engine · 6 induction · 2 cars added · 2 suspension & brakes · 1 tyres & wheels · 1 wording · 3 othershowhide
  • EP 84-87 Toyota Corolla HP Wheel Diameter Allowance Proposal E&O #29458tyres & wheels
  • F5 Request to Update Suzuki Engine Years for F500 #29453engine
  • SM Radiator E&O Clarifications #29294engine
  • EP EP BMW Z3 Rule Clarification #28998engine
  • SM Modifications to prevent failures of Rear Brake Caliper Pin #28953suspension & brakes
  • EP Request to Classify Porsche 911 2.0L #28456cars added
  • 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
  • EP BMW Cylinder Head Casting and Part Numbers #28708engine
  • EP Request to Classify 1990-1994 Mazda Protege #28381cars added
  • EP Error in Mini Cooper Spec Line #28713wording
  • EP Caterham 7 Spec Line #28498engine
  • EP Request to Review Horsepower Parity #27662induction
  • EP E36 (92-95) Brakes Errors and Omissions #28058suspension & brakes
  • EP Request to allow 40 DCOE carb for the Datsun 510 #28195induction
  • EP Add Throttle Body Size these EP BMW Spec Lines #28422induction
  • EP Request for Help for Datsun 1200 #27934induction
  • EP Request to List Mazda Miata Throttle Body Size #27907induction
  • F5 Change 600cc restrictor size #27883induction
  • EP Re-organize Prep2 Cylinder Head Rules for Clarity & Consistency #27661engine
Virginia International Raceway Runoffs 20192019-10-051:57.361Wiley Mcmahan · fastest of 15 · top 5 within 3.8s1:57.572Wiley Mcmahan · fastest of 15 · top 5 within 4.0s142.8Eric McRee2:14.552Todd Buras · fastest of 60 · top 5 within 0.2s2:16.459Elivan Goulart · fastest of 56 · top 5 within 0.4s119.8Jim Drago+18.887squal +17.191s116.1%qual 114.6%1:55.124Bryce Cornet · fastest of 8 · top 5 within 2.3s2:15.816Bryce Cornet · fastest of 8 · top 5 within 4.9s135.7Bryce Cornet+18.244squal -2.237s115.5%qual 98.1%2:00.987Jesse Prather · fastest of 29 · top 5 within 2.2s2:01.631Jesse Prather · fastest of 24 · top 5 within 1.4s147.5Kip Van Steenburg+4.059squal +3.626s103.5%qual 103.1%
15 rule changes (F5: 1, SM: 4, EP: 10)3 weight · 2 engine · 2 induction · 2 tyres & wheels · 1 cars added · 1 suspension & brakes · 2 wording · 2 othershowhide
  • EP Request bodywork for Austin Healey Bugeye Sprite MK1 #27106other
  • EP Request to classify the GMX5 2019 #27263cars added
  • EP level one susp. component rule #27270suspension & brakes
  • EP Clarification of Carb Rules - Prep 1 #27300induction
  • EP Clarification of Carb Rules - Prep 2 #27301induction
  • F5 Request for Weight Increase for Motorcycle Powered Cars #27214weight +25 lbs
  • EP Request Miata Eligibility - 2003 #27121other
  • EP Allow Firewall Modification for Fitment of 13B into RX8 #26726engine
  • EP Rollcenter Correction Clarification #25873tyres & wheels
  • EP Hardtops #26476wording
  • EP Request for Competition Adjustment for 2nd Generation RX7 #25935weight -50 lbs
  • SM Request to allow aftermarket fuel filters. #26370wording
  • 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 20182018-10-101:41.807Jeff Jorgenson · fastest of 5 · top 5 within 6.6s1:42.491David Lapham · fastest of 5 · top 5 within 9.5s113.3David Lapham1:54.355Ken Sutherland · fastest of 48 · top 5 within 0.7s1:55.278Michael Carter · fastest of 48 · top 5 within 0.3s102.2Danny Steyn+12.787squal +12.548s112.5%qual 112.3%1:37.598Bryce Cornet · fastest of 13 · top 5 within 0.9s1:37.909Bryce Cornet · fastest of 12 · top 5 within 1.3s124.1Melvin David Kemper Jr-4.582squal -4.209s95.5%qual 95.9%1:45.828Glen McCready · fastest of 18 · top 5 within 4.3s1:46.518Glen McCready · fastest of 16 · top 5 within 2.8s106.5Aaron Downey+4.027squal +4.021s103.9%qual 103.9%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:43.136Wiley Clinton McMahan · fastest of 38 · top 5 within 1.4s1:42.860Wiley Clinton McMahan · fastest of 37 · top 5 within 1.6s1:58.306Chris Haldeman · fastest of 86 · top 5 within 0.5s1:59.100Michael Gagliardo · fastest of 83 · top 5 within 0.6s+16.240squal +15.170s115.8%qual 114.7%1:41.231Jarret Voorhies · fastest of 16 · top 5 within 1.7s1:41.146Jarret Voorhies · fastest of 16 · top 5 within 1.2s-1.714squal -1.905s98.3%qual 98.2%1:49.597Matt Reynolds · fastest of 44 · top 5 within 1.2s1:50.396Matt Reynolds · fastest of 45 · top 5 within 0.5s+7.536squal +6.461s107.3%qual 106.3%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:28.528Calvin Stewart · fastest of 14 · top 5 within 3.9s1:29.853Steven Thompson · fastest of 12 · top 5 within 4.5s1:40.514Justin Hille · fastest of 45 · top 5 within 0.3s1:40.764Michael Carter · fastest of 44 · top 5 within 0.3s+10.911squal +11.986s112.1%qual 113.5%1:26.043Jacob Loomis · fastest of 8 · top 5 within 3.1s1:27.922Jacob Loomis · fastest of 8 · top 5 within 2.7s-1.931squal -2.485s97.9%qual 97.2%1:33.847Michael Galati · fastest of 25 · top 5 within 0.8s1:34.266Michael Galati · fastest of 23 · top 5 within 1.3s+4.413squal +5.319s104.9%qual 106.0%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-212:01.824W. Clint McMahan · fastest of 16 · top 5 within 3.0s2:03.298Matthew Strand · fastest of 15 · top 5 within 4.9s2:18.661Andrew Carbonell · fastest of 62 · top 5 within 0.6s2:24.067Todd Lamb · fastest of 59 · top 5 within 0.8s+20.769squal +16.837s116.8%qual 113.8%1:57.804Joseph Burton-Harris · fastest of 10 · top 5 within 2.3s1:58.029Joseph Burton-Harris · fastest of 10 · top 5 within 1.7s-5.269squal -4.020s95.7%qual 96.7%2:03.794Kip Van Steenburg · fastest of 29 · top 5 within 3.2s2:05.109Kip Van Steenburg · fastest of 28 · top 5 within 3.3s+1.811squal +1.970s101.5%qual 101.6%

By track

TrackEvents Typical % of F5 Best Latest 
Road America4100.0%1 of 4 with F5100.0%Runoffs 2020100.0%Runoffs 2020
Virginia International Raceway3100.0%2 of 3 with F5100.0%Runoffs 2019100.0%Runoffs 2022
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 F5'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.