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BoP Lab / Classes / CFC

CFC vs ITA vs SRF 3 vs P pace at every track

Class · click a class to switch, + to compare alongside (up to 4: remove one to add another)
ASB-SpecCFC×EPF600FAFCFE2FFFPFVFXGT1GT2GTXHPvsITA×vsP×P2SMSMXvsSRF 3×SRF3STLSTUT1T2T3T4Show 50 inactive classes
Series
Reference · what % is measured against, 2 events
Tracks · untick to narrow
2:012:022:033 rule changes between Runoffs 2025 and Runoffs 20263 ▾P race best at Runoffs 2025: 2:02.122 (Bart Wolf)P race best at Runoffs 2026: 2:03.283 (Lawrence Loshak)P qualifying best at Runoffs 2025: 2:01.180 (Lee Alexander)P qualifying best at Runoffs 2026: 2:02.281 (Perry Richardson)Road America · Runoffs 2025Runoffs2025Road America · Runoffs 2026Runoffs2026
CFCITASRF 3Psolid race · dashed qualifying · slower is lower
EventCFCITASRF 3P
Qual best Race best Trap Qual best Race best Trap vs CFC Qual best Race best Trap vs CFC Qual best Race best Trap vs CFC 
Road America Runoffs 20262026-09-282:02.281Perry Richardson · fastest of 10 · top 5 within 1.3s+1.101s (+0.91%)2:03.283Lawrence Loshak · fastest of 10 · top 5 within 0.8s+1.161s (+0.95%)165.6Jason Miller+0.7 mph (+0.4%)
3 rule changes (ITA: 2, P: 1)1 induction · 1 suspension & brakes · 1 wordingshowhide
  • ITA E&O: Turbo Cars in IT #39691induction
  • P Request to Continue to Allow Carbon Brakes #39476suspension & brakes
  • ITA Change 90-93 Miata Diff Housing Upgrade Wording in Notes #38965wording
Road America Runoffs 20252025-09-292:01.180Lee Alexander · fastest of 14 · top 5 within 1.5s2:02.122Bart Wolf · fastest of 13 · top 5 within 2.1s165.0Jason Miller
21 earlier rule changes on record, in force before Runoffs 2025 (from 2019)7 cars added · 4 weight · 3 induction · 2 engine · 2 tyres & wheels · 3 othershowhide
  • P 13B Rotary Engine Rules Change Request #38856induction
  • P Add Radical Cup series Radical SR3 spec line to Table 1 #38916other
  • P Clarify spec line cars language #38943weight
  • ITA Allow NA Miata to Upgrade to NB Miata Rear Suspension Uprights #38478other
  • P RM 25-05 - Prototype Engine Table A, 2 Cycle Restrictor Change #38929induction
  • ITA 1998-2002 Honda Accord 2.3L #38075cars added
  • P Add missing punctuation marks #38150weight
  • P Correct text in engine table notes #37606engine
  • P Update Prototype class designation #37653tyres & wheels
  • ITA 90-93 Miatas to use 94-97 Differential Allowance In #35989other
  • ITA Battery Change #35854weight
  • ITA Request to Classify Chevrolet Beretta #35163cars added
  • ITA Spec LIne Error #33130cars added
  • ITA Request for Porsche 924S Reclassification to ITA #32441cars added
  • ITA Request to Move 83-88 Porsche 944 to ITA #30376cars added
  • ITA Request 2nd Generation Camry to ITB #30007cars added
  • ITA Request to clarify ITA Civic Si 92-95 #28868engine
  • ITA Request to classify a 2003 Honda Accord #28898cars added
  • ITA Cleanup 4.f Traction control #28609tyres & wheels
  • ITA Request clarification 1999 Ford Escort ZX2 S?R #26966weight -45 lbs
  • ITA Request clarification on 9.1.3 D1.A.2 #26237induction

By track

TrackEvents 
Road America2
About this data
Every event the class ran, at any track, oldest to newest on the chart and newest first in the table. Each point is the class's best lap as a share of the reference class'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.