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BoP Lab / Michelin Raceway Road Atlanta

FE2 vs F6 vs SRF vs FF pace at Michelin Raceway Road Atlanta

Class · click a class to switch, + to compare alongside (up to 4: remove one to add another)
Reference class · the others' laps as a share of this one's at the same event, so years compare despite weather; + a class above to measure against it

Quickest here: FE2 1:22.855 Paul Schneider, Super Tour Mar 2022 race · F6 1:30.014 Clint McMahan, Super Tour Mar 2024 qualifying · FF 1:30.677 Nicholas d'Orlando, Super Tour Mar 2021 race

1:221:241:261:281:301:321:341:366 rule changes between Super Tour Mar 2021 and Super Tour Mar 20226 ▾4 rule changes between Super Tour Mar 2022 and Super Tour Mar 20234 ▾7 rule changes between Super Tour Mar 2023 and Super Tour Mar 20247 ▾10 rule changes between Super Tour Mar 2024 and Super Tour Mar 202510 ▾8 rule changes between Super Tour Mar 2025 and Super Tour Mar 20268 ▾FE2 race best at Super Tour Mar 2021: 1:23.956 (Bailey Monette)FE2 race best at Super Tour Mar 2022: 1:22.855 (Paul Schneider)FE2 race best at Super Tour Mar 2023: 1:24.454 (Charles Russell Turner)FE2 race best at Super Tour Mar 2024: 1:24.414 (Charles Russell Turner)FE2 race best at Super Tour Mar 2025: 1:23.500 (Franklin Futrelle)FE2 race best at Super Tour Mar 2026: 1:24.978 (Paul Schneider)FE2 qualifying best at Super Tour Mar 2021: 1:24.364 (Bailey Monette)FE2 qualifying best at Super Tour Mar 2022: 1:23.096 (Paul Schneider)FE2 qualifying best at Super Tour Mar 2023: 1:23.128 (Franklin Futrelle)FE2 qualifying best at Super Tour Mar 2024: 1:23.212 (Franklin Futrelle)FE2 qualifying best at Super Tour Mar 2025: 1:23.136 (Franklin Futrelle)FE2 qualifying best at Super Tour Mar 2026: 1:24.639 (Paul Schneider)F6 race best at Super Tour Mar 2023: 1:35.247 (H Cory McLeod)F6 race best at Super Tour Mar 2024: 1:30.267 (Clint McMahan)F6 race best at Super Tour Mar 2026: 1:33.719 (H Cory Mcleod)F6 qualifying best at Super Tour Mar 2023: 1:35.791 (George Bugg)F6 qualifying best at Super Tour Mar 2024: 1:30.014 (Clint McMahan)F6 qualifying best at Super Tour Mar 2026: 1:30.039 (Calvin Stewart)FF race best at Super Tour Mar 2021: 1:30.677 (Nicholas d'Orlando)FF race best at Super Tour Mar 2022: 1:31.224 (Robert Perona)FF race best at Super Tour Mar 2023: 1:31.059 (Robert Albani)FF race best at Super Tour Mar 2024: 1:32.061 (Sebastian Mateo Naranjo)FF race best at Super Tour Mar 2026: 1:31.691 (David Ybarra)FF qualifying best at Super Tour Mar 2021: 1:31.319 (Nicholas d'Orlando)FF qualifying best at Super Tour Mar 2022: 1:31.840 (Joe Colasacco)FF qualifying best at Super Tour Mar 2023: 1:31.000 (Porter Aiken)FF qualifying best at Super Tour Mar 2024: 1:32.019 (Sebastian Mateo Naranjo)FF qualifying best at Super Tour Mar 2026: 1:32.437 (David Ybarra)Super Tour Mar 2021Super Tour Mar2021Super Tour Mar 2022Super Tour Mar2022Super Tour Mar 2023Super Tour Mar2023Super Tour Mar 2024Super Tour Mar2024Super Tour Mar 2025Super Tour Mar2025Super Tour Mar 2026Super Tour Mar2026
FE2F6SRFFFsolid race · dashed qualifying · slower is lower
100%102%104%106%108%110%112%114%116%6 rule changes between Super Tour Mar 2021 and Super Tour Mar 20226 ▾4 rule changes between Super Tour Mar 2022 and Super Tour Mar 20234 ▾7 rule changes between Super Tour Mar 2023 and Super Tour Mar 20247 ▾10 rule changes between Super Tour Mar 2024 and Super Tour Mar 202510 ▾8 rule changes between Super Tour Mar 2025 and Super Tour Mar 20268 ▾FE2 race best at Super Tour Mar 2021: 100.0% of FE2's (Bailey Monette)FE2 race best at Super Tour Mar 2022: 100.0% of FE2's (Paul Schneider)FE2 race best at Super Tour Mar 2023: 100.0% of FE2's (Charles Russell Turner)FE2 race best at Super Tour Mar 2024: 100.0% of FE2's (Charles Russell Turner)FE2 race best at Super Tour Mar 2025: 100.0% of FE2's (Franklin Futrelle)FE2 race best at Super Tour Mar 2026: 100.0% of FE2's (Paul Schneider)FE2 qualifying best at Super Tour Mar 2021: 100.0% of FE2's (Bailey Monette)FE2 qualifying best at Super Tour Mar 2022: 100.0% of FE2's (Paul Schneider)FE2 qualifying best at Super Tour Mar 2023: 100.0% of FE2's (Franklin Futrelle)FE2 qualifying best at Super Tour Mar 2024: 100.0% of FE2's (Franklin Futrelle)FE2 qualifying best at Super Tour Mar 2025: 100.0% of FE2's (Franklin Futrelle)FE2 qualifying best at Super Tour Mar 2026: 100.0% of FE2's (Paul Schneider)F6 race best at Super Tour Mar 2023: 112.8% of FE2's (H Cory McLeod)F6 race best at Super Tour Mar 2024: 106.9% of FE2's (Clint McMahan)F6 race best at Super Tour Mar 2026: 110.3% of FE2's (H Cory Mcleod)F6 qualifying best at Super Tour Mar 2023: 115.2% of FE2's (George Bugg)F6 qualifying best at Super Tour Mar 2024: 108.2% of FE2's (Clint McMahan)F6 qualifying best at Super Tour Mar 2026: 106.4% of FE2's (Calvin Stewart)FF race best at Super Tour Mar 2021: 108.0% of FE2's (Nicholas d'Orlando)FF race best at Super Tour Mar 2022: 110.1% of FE2's (Robert Perona)FF race best at Super Tour Mar 2023: 107.8% of FE2's (Robert Albani)FF race best at Super Tour Mar 2024: 109.1% of FE2's (Sebastian Mateo Naranjo)FF race best at Super Tour Mar 2026: 107.9% of FE2's (David Ybarra)FF qualifying best at Super Tour Mar 2021: 108.2% of FE2's (Nicholas d'Orlando)FF qualifying best at Super Tour Mar 2022: 110.5% of FE2's (Joe Colasacco)FF qualifying best at Super Tour Mar 2023: 109.5% of FE2's (Porter Aiken)FF qualifying best at Super Tour Mar 2024: 110.6% of FE2's (Sebastian Mateo Naranjo)FF qualifying best at Super Tour Mar 2026: 109.2% of FE2's (David Ybarra)Super Tour Mar 2021Super Tour Mar2021Super Tour Mar 2022Super Tour Mar2022Super Tour Mar 2023Super Tour Mar2023Super Tour Mar 2024Super Tour Mar2024Super Tour Mar 2025Super Tour Mar2025Super Tour Mar 2026Super Tour Mar2026
FE2F6SRFFFsolid race · dashed qualifying · each class's best lap as a share of FE2's at the same event (the reference class, changeable above); 100% is level, higher is quicker
EventFE2F6SRFFF
Qual bestRace bestTrapQual bestRace bestTrapvs FE2% of FE2Qual bestRace bestTrapvs FE2% of FE2Qual bestRace bestTrapvs FE2% of FE2
Super Tour Mar 2026 ST26MAR062026-03-061:24.639Paul Schneider · fastest of 7 · top 5 within 2.4s+1.503s (+1.81%)1:24.978Paul Schneider · fastest of 7 · top 5 within 2.9s+1.478s (+1.77%)138.5Paul Schneider+4.9 mph (+3.6%)1:30.039Calvin Stewart · fastest of 4 · top 4 within 13.3s+0.025s (+0.03%)1:33.719H Cory Mcleod · fastest of 3 · top 3 within 14.2s+3.452s (+3.82%)137.8Calvin Stewart+5.7 mph (+4.3%)+8.741squal +5.400s110.3%qual 106.4%1:32.437David Ybarra · fastest of 6 · top 5 within 2.6s+0.418s (+0.45%)1:31.691David Ybarra · fastest of 6 · top 5 within 3.7s-0.370s (-0.40%)127.3Axel Leroy+5.2 mph (+4.3%)+6.713squal +7.798s107.9%qual 109.2%
8 rule changes (FE2: 2, SRF: 4, FF: 2)2 engine · 2 tyres & wheels · 1 cars added · 1 wording · 2 other · SRF3 spark plugs limited to NGK LTR7IX-11 P/N G301041 only; washers and sealing rings prohibited. · FF clarifies alternative tire eligibility: homologated 1989 or earlier with rocker or outboard suspension all four corners; push-rod/pull-rod cars may seek approval. · FE and FE2 Enterprise bubble tail part WM138014 now allowed; FE2 must use this configuration only. · SRF3 adds HD Oil Cooler P/N G1148500 option alongside standard P/N G480503, no fan permitted. · FF adds rocker arm and outboard suspension cars option to use Hoosier bias ply slicks or VFF tyres; clarifies mixing rules. · FE2 allows pre-approved driver safety and comfort seat and control modifications for drivers with disabilities, per logbook. · SRF drivers with disabilities may modify seat and controls for safety and comfort with SCCA approval, noted in logbook, for that driver only. · SRF SADEV-SRF3 6-speed sequential transmission: effective date clarified to 1 April 2025 onward.showhide
  • SRF SRF3 Spark Plugs #39899engineengineSRF3 spark plugs limited to NGK LTR7IX-11 P/N G301041 only; washers and sealing rings prohibited.
  • FF Formula F Alternative Tire Rule Proposed Clarifications #39281tyres & wheelsadded · tyres & wheelsFF clarifies alternative tire eligibility: homologated 1989 or earlier with rocker or outboard suspension all four corners; push-rod/pull-rod cars may seek approval.
  • FE2 FE & FE2 Bubble Tail #38978cars addedaddedFE and FE2 Enterprise bubble tail part WM138014 now allowed; FE2 must use this configuration only.
  • SRF Add HD Oil Cooler #38979engineadded · engineSRF3 adds HD Oil Cooler P/N G1148500 option alongside standard P/N G480503, no fan permitted.
  • FF Page 228, FF tire rule 9.1.1.10.e #38251tyres & wheelsadded · tyres & wheelsFF adds rocker arm and outboard suspension cars option to use Hoosier bias ply slicks or VFF tyres; clarifies mixing rules.
  • FE2 Driver Safety & Comfort #37965otheraddedFE2 allows pre-approved driver safety and comfort seat and control modifications for drivers with disabilities, per logbook.
  • SRF Driver Safety & Comfort #37966otheraddedSRF drivers with disabilities may modify seat and controls for safety and comfort with SCCA approval, noted in logbook, for that driver only.
  • SRF Update SADEV transmission specs #37992wordingwordingSRF SADEV-SRF3 6-speed sequential transmission: effective date clarified to 1 April 2025 onward.
Super Tour Mar 2025 ST25MAR072025-03-071:23.136Franklin Futrelle · fastest of 8 · top 5 within 2.1s-0.076s (-0.09%)1:23.500Franklin Futrelle · fastest of 8 · top 5 within 1.9s-0.914s (-1.08%)133.6Eric Wisniewski+1.7 mph (+1.3%)
10 rule changes (SRF: 6, FF: 4)2 tyres & wheels · 1 engine · 1 suspension & brakes · 1 weight · 5 wording · FF adds alternative tire options for older cars with rocker arm or outboard suspension: bias ply slicks or VFF radials. · FF and FC sequential gearbox weight penalty reduces from 25 lbs to 10 lbs minimum weight addition. · FF Honda Fit pistons: OEM 0.25mm oversize PN 13020-RB7-Z00 or Fast Forward PN FF800-110 now both allowed; standard diameter 73.240mm (2.8835 inches), minimum weight 198.0g. · FF EGR blanking plate rule clarified: VTEC activation valve must be retained and functioning, no modifications permitted. · SRF3 air filter rule removes K&N RC-9160 option, specifies Weems P/N WM301020 only. · SRF Wilwood vented rotor minimum thickness increases to 13.25mm, 0.522 inches. · SRF3 Hoosier decal placement changed from four logos on nose and tail to three logos on sides and center front. · FE and SRF protest fee rules redirected to GCR section 8.3.1.D for fees and procedure. · SRF Hoosier contingency decal requirement reduced from four decals in specific locations to three decals with simplified placement. · SRF wet tyres: front P185/60R13 H20 or W2 and rear P205/60R13 H20 or W2 removed; front P185/65R13 W2 and rear P205/60R13 W2 now required. Hoosier decal placement specified.showhide
  • FF Formula F Proposal to Invite Older Cars Via a Tire Rule Change #37802tyres & wheelsadded · tyres & wheelsFF adds alternative tire options for older cars with rocker arm or outboard suspension: bias ply slicks or VFF radials.
  • FF Change FF/FC Weight with Sequential Gearbox #36651weightfaster · weightFF and FC sequential gearbox weight penalty reduces from 25 lbs to 10 lbs minimum weight addition.
  • FF Alternative Oversize Honda Fit Pistons #37064engineadded · engineFF Honda Fit pistons: OEM 0.25mm oversize PN 13020-RB7-Z00 or Fast Forward PN FF800-110 now both allowed; standard diameter 73.240mm (2.8835 inches), minimum weight 198.0g.
  • FF Update to FF EGR Blanking Plate Rule #36633wordingwordingFF EGR blanking plate rule clarified: VTEC activation valve must be retained and functioning, no modifications permitted.
  • SRF Update SRF3 Air Filter Rule #36681wordingremovedSRF3 air filter rule removes K&N RC-9160 option, specifies Weems P/N WM301020 only.
  • SRF Update SRF Brake Rotor Thickness #36687suspension & brakessuspension & brakesSRF Wilwood vented rotor minimum thickness increases to 13.25mm, 0.522 inches.
  • SRF Hoosier Tire Decal Placement #36739wordingwordingSRF3 Hoosier decal placement changed from four logos on nose and tail to three logos on sides and center front.
  • SRF Protest Fee Clarification #36540wordingwordingFE and SRF protest fee rules redirected to GCR section 8.3.1.D for fees and procedure.
  • SRF Update to Letter 36619 with new Hoosier Contingency Decal Info #36624wordingwordingSRF Hoosier contingency decal requirement reduced from four decals in specific locations to three decals with simplified placement.
  • SRF Update Rain Tire Rule and Hoosier Decal Placement #36436tyres & wheelstyres & wheelsSRF wet tyres: front P185/60R13 H20 or W2 and rear P205/60R13 H20 or W2 removed; front P185/65R13 W2 and rear P205/60R13 W2 now required. Hoosier decal placement specified.
Super Tour Mar 2024 ST24MAR082024-03-081:23.212Franklin Futrelle · fastest of 14 · top 5 within 2.3s+0.084s (+0.10%)1:24.414Charles Russell Turner · fastest of 13 · top 5 within 1.5s-0.040s (-0.05%)131.9Jason Conzo-9.2 mph (-6.5%)1:30.014Clint McMahan · fastest of 8 · top 5 within 4.6s-5.777s (-6.03%)1:30.267Clint McMahan · fastest of 8 · top 5 within 4.8s-4.980s (-5.23%)132.1Calvin Stewart-3.7 mph (-2.7%)+5.853squal +6.802s106.9%qual 108.2%1:32.019Sebastian Mateo Naranjo · fastest of 7 · top 5 within 4.4s+1.019s (+1.12%)1:32.061Sebastian Mateo Naranjo · fastest of 7 · top 5 within 3.1s+1.002s (+1.10%)122.0Calum Dunbar-13.8 mph (-10.1%)+7.647squal +8.807s109.1%qual 110.6%
7 rule changes (SRF: 6, FF: 1)2 tyres & wheels · 1 engine · 1 suspension & brakes · 3 other · FF Honda Fit gains Fast Forward oversize piston ring option PN FF800-100 as alternative to Riken or Nippon. · SRF rain/brake light must be Super Bright LEDs Inc. P/N PT-STRB-R24; secondary filament must connect to rain light switch. · SRF brake light must be Super Bright LEDs Inc. P/N PT-STRB-R24, with SCCA Enterprises P/N 180427A pigtail and strobing rain light kit. · SRF adds mandatory front brake ducts 12–36 inches, throttle pedal heel-toe extension, braided stainless flex lines, camber limit 5.0 degrees, radiator opening height 3½ ± ½ inches, rear shift cable clamp P/N WM302007A. · SRF radiator options expanded: Enterprises P/N 480465 with baffle 480464, 480466, or Automotive 1R698 and CU698 allowed if cross-reference equivalent. · SRF wet front tyre changes to Hoosier P/N 46100 P185/60R13 H20 or W2 with 2.5" ground clearance. · SRF front W2 rain tyre Hoosier part number changes from 46100 to 46101 P185/65R13.showhide
  • FF Honda Fit Oversize Piston Rings #35305engineadded · engineFF Honda Fit gains Fast Forward oversize piston ring option PN FF800-100 as alternative to Riken or Nippon.
  • SRF Update SRF Rain / Brake Rule #34706otherotherSRF rain/brake light must be Super Bright LEDs Inc. P/N PT-STRB-R24; secondary filament must connect to rain light switch.
  • SRF Update SRF Brake Light Rule v1 #34853otherotherSRF brake light must be Super Bright LEDs Inc. P/N PT-STRB-R24, with SCCA Enterprises P/N 180427A pigtail and strobing rain light kit.
  • SRF SRF / SRF3 Rule Updates #35268suspension & brakessuspension & brakesSRF adds mandatory front brake ducts 12–36 inches, throttle pedal heel-toe extension, braided stainless flex lines, camber limit 5.0 degrees, radiator opening height 3½ ± ½ inches, rear shift cable clamp P/N WM302007A.
  • SRF SRF Radiator Rule Update #34805otheraddedSRF radiator options expanded: Enterprises P/N 480465 with baffle 480464, 480466, or Automotive 1R698 and CU698 allowed if cross-reference equivalent.
  • SRF Hoosier SRF Wet Front Tire Rule Update #34189tyres & wheelstyres & wheelsSRF wet front tyre changes to Hoosier P/N 46100 P185/60R13 H20 or W2 with 2.5" ground clearance.
  • SRF Update SRF Front W2 Rain Tire Part Number #34118tyres & wheelstyres & wheelsSRF front W2 rain tyre Hoosier part number changes from 46100 to 46101 P185/65R13.
Super Tour Mar 2023 ST23MAR102023-03-101:23.128Franklin Futrelle · fastest of 15 · top 5 within 2.5s+0.032s (+0.04%)1:24.454Charles Russell Turner · fastest of 15 · top 5 within 1.2s+1.599s (+1.93%)141.1Eric Cruz-3.0 mph (-2.1%)1:35.791George Bugg · fastest of 5 · top 5 within 8.8s1:35.247H Cory McLeod · fastest of 5 · top 5 within 9.3s135.8Jack Walbran+10.793squal +12.663s112.8%qual 115.2%1:31.000Porter Aiken · fastest of 17 · top 5 within 1.5s-0.840s (-0.91%)1:31.059Robert Albani · fastest of 17 · top 5 within 0.4s-0.165s (-0.18%)135.8Callum Baxter+3.7 mph (+2.8%)+6.605squal +7.872s107.8%qual 109.5%
4 rule changes (SRF: 3, FF: 1)2 engine · 1 wording · 1 other · FF Honda Fit engine adds Fast Forward part number alternatives for intake, exhaust, oil system, and scavenge pump components. · SRF removes 1985 Renault Alliance solid front rotor option; restrictor sizes decrease 1mm for newer Kawasaki and multi-brand engines; minimum weights increase to 1100 lbs. · SRF tire rule wording clarified: tires must be run as delivered. · SRF brake rotor minimum thickness reduced from 13.25 mm to 12.20 mm; seals and air filter specs clarified.showhide
  • FF Add Fast Forward Part Numbers for Honda Fit Engine #33752engineadded · engineFF Honda Fit engine adds Fast Forward part number alternatives for intake, exhaust, oil system, and scavenge pump components.
  • SRF Update SRF Brake Rule #33469enginefaster · engineSRF removes 1985 Renault Alliance solid front rotor option; restrictor sizes decrease 1mm for newer Kawasaki and multi-brand engines; minimum weights increase to 1100 lbs.
  • SRF SRF Tire Rule Update #32614wordingwordingSRF tire rule wording clarified: tires must be run as delivered.
  • SRF Brake, seal, and air filter clarifications #32670otherfasterSRF brake rotor minimum thickness reduced from 13.25 mm to 12.20 mm; seals and air filter specs clarified.
Super Tour Mar 2022 ST22MAR122022-03-121:23.096Paul Schneider · fastest of 13 · top 5 within 2.8s-1.268s (-1.50%)1:22.855Paul Schneider · fastest of 13 · top 5 within 2.5s-1.101s (-1.31%)144.1Bailey Monette+5.2 mph (+3.8%)1:31.840Joe Colasacco · fastest of 7 · top 5 within 1.8s+0.521s (+0.57%)1:31.224Robert Perona · fastest of 7 · top 5 within 1.6s+0.547s (+0.60%)132.1Joe Colasacco-1.0 mph (-0.8%)+8.369squal +8.744s110.1%qual 110.5%
6 rule changes (SRF: 5, FF: 1)1 cars added · 1 engine · 1 tyres & wheels · 2 wording · 1 other · SRF wet tyres front P185/65R13 W2 option added; air box clarified as-delivered; SRF3 restrictor plate G301048 mandatory Jan 1 2022; P2 motorcycle engines up to 1005cc with 35mm restrictor, 2009+ stock 1075 lbs, 2008 stock 1025 lbs, modifie… · SRF wet tyres add Hoosier W2 option alongside existing H20 from October 4, 2021. · SRF adds SADEV-SRF3 6-speed sequential transmission option with ratios 3.0–0.92:1 and 3.20 final drive. · SRF seal requirements clarified: seals now must be on driveline components in designated locations; unsealed components removed and inspected by CSR or Enterprises rather than engine shipped for testing. · SRF3 alternator pulley specified as P/N G902130 or G902130A, minimum 12oz. · FF block relief permitted only as needed to fit an allowed crankshaft.showhide
  • SRF Three Updates to SRF Rules #31523otherotherSRF wet tyres front P185/65R13 W2 option added; air box clarified as-delivered; SRF3 restrictor plate G301048 mandatory Jan 1 2022; P2 motorcycle engines up to 1005cc with 35mm restrictor, 2009+ stock 1075 lbs, 2008 stock 1025 lbs, modifie…
  • SRF SRF Wet Tires #30849tyres & wheelsadded · tyres & wheelsSRF wet tyres add Hoosier W2 option alongside existing H20 from October 4, 2021.
  • SRF SADEV-SRF3 Transmission #30926cars addedaddedSRF adds SADEV-SRF3 6-speed sequential transmission option with ratios 3.0–0.92:1 and 3.20 final drive.
  • SRF SRF Update Maintenance, Repairs and Seals #30961wordingwordingSRF seal requirements clarified: seals now must be on driveline components in designated locations; unsealed components removed and inspected by CSR or Enterprises rather than engine shipped for testing.
  • SRF SRF3 Alternator Pulley #30684engineadded · engineSRF3 alternator pulley specified as P/N G902130 or G902130A, minimum 12oz.
  • FF Kent crankshaft clarification #30426wordingwordingFF block relief permitted only as needed to fit an allowed crankshaft.
Super Tour Mar 2021 ST21MAR192021-03-191:24.364Bailey Monette · fastest of 18 · top 5 within 1.3s1:23.956Bailey Monette · fastest of 18 · top 5 within 0.8s138.9T Vanacore1:31.319Nicholas d'Orlando · fastest of 11 · top 5 within 1.6s1:30.677Nicholas d'Orlando · fastest of 11 · top 5 within 0.9s133.1Cliff Johnson+6.721squal +6.955s108.0%qual 108.2%
19 earlier rule changes on record, in force before Super Tour Mar 2021 (from 2019)3 engine · 2 aero · 2 tyres & wheels · 2 weight · 8 wording · 2 other · SRF and SRF3 mandatory identification revised: removed Ford Performance and Blue Oval decals, added Hoosier logo placement. · FF class cylinder head now permits optional coolant bleed line pipe thread fitting to swirl tower. · FF Honda LC1 ECU supplied by HPD is permitted effective 12/1/2020 with HPD lambda sensor. · SRF rear springs limited to P/N 280390 only, previous part numbers no longer allowed; ground clearance wording clarified. · FE2 oil cooler rule clarified: Setrab 50-625-7612 or any cooler with max core 13 inches wide by 6.5 inches high allowed. · FF Honda LC1 ECU implementation date clarified to pending, contingent on SCCA receiving sufficient support materials. · SRF Penske shock P/N 280396 bump stop P/N 280407 becomes mandatory, maximum one per shock, effective 05/01/2020. · FF Kent Engine alternator becomes optional instead of not required. · FF permits HPD LC1 ECU with lambda sensor; E1 ECU no longer supported but existing units may continue. · FF rain tyres now allow Hoosier W3 Radial 185/60R13 front and 205/60R13 rear. · SRF rain and brake rule supersedes GCR 9.3.32.B.2 effective 1/1/2024 through 12/31/2024. · FE minimum weight rises to 1270 lbs; FE2 minimum weight rises to 1270 lbs; new spring options added; tire warmers prohibited. · SRF adds tire warmer prohibition and specifies Hoosier dry and wet tire part numbers. · SRF front nose weight minimum reduced from 35 to 32 lbs. · SRF2 becomes Regional Only; SRF3 nomenclature changed from GEN3 to Ford 1.6L conversion; SRF and SRF3 no longer compete together for points. · SRF drivers may now use Dash Windscreen Kit P/N 1180103 or P/N 180102. · FF Honda Fit cylinder honing increased to 73.315mm and oversize pistons PN 13020-RB7-Z00 now permitted with matching ring packs. · FF intake manifold thermal wrap now permitted if easily removable for inspection; no coating allowed. · FF clarifies coolant and oil catch tank capacity requirements: coolant minimum one U.S. pint, oil minimum one U.S. quart per system.showhide
  • SRF Mandatory identification: #30223wordingwordingSRF and SRF3 mandatory identification revised: removed Ford Performance and Blue Oval decals, added Hoosier logo placement.
  • FF Allow Optional Coolant Bleed Line to Correct a Known Problem #29673otheraddedFF class cylinder head now permits optional coolant bleed line pipe thread fitting to swirl tower.
  • FF Clarification regarding Honda LC1 ECU implementation date #29684wordingwordingFF Honda LC1 ECU supplied by HPD is permitted effective 12/1/2020 with HPD lambda sensor.
  • SRF SRF Shocks, Springs and Ride Height. #29688otherotherSRF rear springs limited to P/N 280390 only, previous part numbers no longer allowed; ground clearance wording clarified.
  • FE2 FE/FE2 Oil Cooler #29293wordingwordingFE2 oil cooler rule clarified: Setrab 50-625-7612 or any cooler with max core 13 inches wide by 6.5 inches high allowed.
  • FF Clarification regarding Honda LC1 ECU implementation #29135wordingwordingFF Honda LC1 ECU implementation date clarified to pending, contingent on SCCA receiving sufficient support materials.
  • SRF SRF Bump Stop Correction #27019wordingwordingSRF Penske shock P/N 280396 bump stop P/N 280407 becomes mandatory, maximum one per shock, effective 05/01/2020.
  • FF E&O FF Kent Engine alternator language #28204engineadded · engineFF Kent Engine alternator becomes optional instead of not required.
  • FF Honda Racing HPD low cost ECU proposal #27563engineadded · engineFF permits HPD LC1 ECU with lambda sensor; E1 ECU no longer supported but existing units may continue.
  • FF Update rain tire designation #28443tyres & wheelsadded · tyres & wheelsFF rain tyres now allow Hoosier W3 Radial 185/60R13 front and 205/60R13 rear.
  • SRF SRF Rain / Brake Rule - BoD approved as follows #34958wordingwordingSRF rain and brake rule supersedes GCR 9.3.32.B.2 effective 1/1/2024 through 12/31/2024.
  • FE2 FE / FE2 Update Rules #27624weightslower · weightFE minimum weight rises to 1270 lbs; FE2 minimum weight rises to 1270 lbs; new spring options added; tire warmers prohibited.
  • SRF SRF Tire Warmer Rule #27622tyres & wheelstyres & wheelsSRF adds tire warmer prohibition and specifies Hoosier dry and wet tire part numbers.
  • SRF SRF / SRF3 Nose Weight Reduction #27706weightfaster · weightSRF front nose weight minimum reduced from 35 to 32 lbs.
  • SRF SRF / SRF3 Majors & Regional Class Updates #27723wordingwordingSRF2 becomes Regional Only; SRF3 nomenclature changed from GEN3 to Ford 1.6L conversion; SRF and SRF3 no longer compete together for points.
  • SRF SRF Dash Windscreen Kit #27028aeroadded · aeroSRF drivers may now use Dash Windscreen Kit P/N 1180103 or P/N 180102.
  • FF Request for Oversize Honda Fit Pistons #25810enginefaster · engineFF Honda Fit cylinder honing increased to 73.315mm and oversize pistons PN 13020-RB7-Z00 now permitted with matching ring packs.
  • FF Heat Shield - Fit Intake #26102aeroadded · aeroFF intake manifold thermal wrap now permitted if easily removable for inspection; no coating allowed.
  • FF Request catch cans/tanks clarification #26158wordingwordingFF clarifies coolant and oil catch tank capacity requirements: coolant minimum one U.S. pint, oil minimum one U.S. quart per system.
About this data
Best is the class's fastest lap in that event's qualifying or race sessions, with the driver who set it, how many cars set a time that session and how close the top five were; a best from fewer than three cars is greyed. With two or more classes, "vs" is the gap of each class's best to the first class's at the same event. "% of FE2" is the class's best as a share of FE2's best at the same event (100% is level, less is quicker): weather and track condition move every class together, so this compares across years where the raw times do not. It still breaks when FE2's own field changes or one session was wet and another dry. Newest event first. The coloured figure under each value is the change from the previous event that has one (green is quicker, red slower). Whole laps only, so events with different sector layouts still compare. Weather and track condition are not accounted for.