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BoP Lab / Buttonwillow Raceway Park

F6 vs FV pace at Buttonwillow Raceway Park

Class · click a class to switch, + to compare alongside (up to 4)
AS+B Spec+B-Spec+BSpc+EP+F6×F500+FA+FC+FE 2+FE2+FF+FP+vsFV×FX+GT1+GT2+GT3+GT3U+GTL+GTX+HP+P+P1+P2+PX+SM+SMX+SRF3+STL+STU+T1+T2+T3+T4+
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
Track configuration

Quickest here: FV 1:58.898 Mace Gjerman, Cal Club 2026 race

1:592:002:012:022:03FV race best at Cal Club 2025: 2:01.197 (Gavin Sweeney)FV race best at Cal Club 2026: 1:58.898 (Mace Gjerman)FV qualifying best at Cal Club 2025: 2:02.354 (Gavin Sweeney)FV qualifying best at Cal Club 2026: 2:02.562 (Gavin Sweeney)Cal Club 20252025Cal Club 20262026
F6FVsolid race · dashed qualifying · slower is lower
EventF6FV
Qual bestRace bestTrapQual bestRace bestTrapvs F6
Cal Club 2026 CALCL262026-02-212:02.562Gavin Sweeney · fastest of 7 · top 5 within 3.3s+0.208s (+0.17%)1:58.898Mace Gjerman · fastest of 7 · top 5 within 6.0s-2.299s (-1.90%)124.6Gavin Sweeney+21.2 mph (+20.5%)
No rule changes on record between these events
Cal Club 2025 CALCL252025-02-222:02.354Gavin Sweeney · fastest of 5 · top 5 within 10.3s2:01.197Gavin Sweeney · fastest of 5 · top 5 within 9.6s103.5Gavin Sweeney
18 earlier rule changes on record, in force before Cal Club 2025 (from 2019)5 tyres & wheels · 1 aero · 1 suspension & brakes · 1 weight · 10 wording · FV ferrous rotor no longer required to be smooth; may have up to three pad cleaning grooves per side. · FV front wheel bearings wording clarified in GCR 9.1.1.C.10.G. · FV connecting rod rules add Brian Crower part #BC6417 and Newland Group #4M113077 as allowed replacements. · FV connecting rods minimum weight 425.0 grams, center-to-center length 130 ± 0.10/-0.25 mm specified. · FV connecting rod suppliers clarified: Crower SP93280B and BrianCrower BC6417 allowed as direct replacements. · FV allows Crower SP93280B and Brian Crower Racing Rods as direct replacement connecting rods, must meet OEM minimum weight. · FV now allows 4 bolt wheels, previously restricted to 5 bolt wheels. · FV now supports 4-bolt pattern wheels in addition to existing wheel specifications. · FV rain tire requirement changed to Hoosier #44266 22.5 x 5.0 x 15 WET or W3. · FV allows non-spec Hoosier tires in Regional races until 2020-01-01, when spec tires become required. · FV allows rear tires on front of car; mandates Hoosier #43337 fronts and #43353 rears, plus #44266 rain tire from 2020-01-01. · FV wheels clarified: 15" x 4J standard or 15" x 4.5J steel VW, 5-bolt pattern, same track dimensions. · FV exhaust outlet location tightened to 1–4 inches behind rearmost body part. · FV wheels now permit 15-inch 4.5J steel wheels within C.2 track dimensions, adding to standard 4J options. · FV exhaust opening can now extend to 4 inches behind body rear, previously 3 inches maximum. · FV front track maximum 52.500" and rear track 49.125"-50.750" no longer prohibits spacers. · FV disc brake assembly minimum weight clarified to 16.5 lbs total; caliper minimum weight requirement removed. · FV intake manifold horizontal tube measurement locations clarified between 1.500" and 8.000" on short side.showhide
  • FV Disc Brakes #36822suspension & brakessuspension & brakesFV ferrous rotor no longer required to be smooth; may have up to three pad cleaning grooves per side.
  • FV FV Wheel Bearing Clarification #35150wordingwordingFV front wheel bearings wording clarified in GCR 9.1.1.C.10.G.
  • FV Connecting Rod Update Request for 9.1.1.C Formula Vee (FV) 5.C.6 #32160wordingwordingFV connecting rod rules add Brian Crower part #BC6417 and Newland Group #4M113077 as allowed replacements.
  • FV E&O clarification of connecting rod center-to-center length #32183wordingwordingFV connecting rods minimum weight 425.0 grams, center-to-center length 130 ± 0.10/-0.25 mm specified.
  • FV Update direct replacement connecting rod information #31843wordingwordingFV connecting rod suppliers clarified: Crower SP93280B and BrianCrower BC6417 allowed as direct replacements.
  • FV Formula V Connecting Rod Replacement #31448wordingwordingFV allows Crower SP93280B and Brian Crower Racing Rods as direct replacement connecting rods, must meet OEM minimum weight.
  • FV Support for Recommended Item - 4 bolt wheels in FV #29084tyres & wheelstyres & wheelsFV now allows 4 bolt wheels, previously restricted to 5 bolt wheels.
  • FV Support for 4-bolt pattern wheels #28955 #29118wordingwordingFV now supports 4-bolt pattern wheels in addition to existing wheel specifications.
  • FV Update rain tire designation #28444tyres & wheelstyres & wheelsFV rain tire requirement changed to Hoosier #44266 22.5 x 5.0 x 15 WET or W3.
  • FV FV Allow non-spec tire in Regional competition #26284tyres & wheelstyres & wheelsFV allows non-spec Hoosier tires in Regional races until 2020-01-01, when spec tires become required.
  • FV Request to Allow Rear Tires on the Front of Formula Vee #26537tyres & wheelstyres & wheelsFV allows rear tires on front of car; mandates Hoosier #43337 fronts and #43353 rears, plus #44266 rain tire from 2020-01-01.
  • FV Clarification on Wheel Bolt Pattern #27603wordingwordingFV wheels clarified: 15" x 4J standard or 15" x 4.5J steel VW, 5-bolt pattern, same track dimensions.
  • FV Allowed Modifications E&O #27398wordingwordingFV exhaust outlet location tightened to 1–4 inches behind rearmost body part.
  • FV E&O Wheels #27230tyres & wheelstyres & wheelsFV wheels now permit 15-inch 4.5J steel wheels within C.2 track dimensions, adding to standard 4J options.
  • FV Exhaust termination rule E&O #26702aeroaeroFV exhaust opening can now extend to 4 inches behind body rear, previously 3 inches maximum.
  • FV E&O Dimensions #26674wordingwordingFV front track maximum 52.500" and rear track 49.125"-50.750" no longer prohibits spacers.
  • FV Request to clarify Disc Brake rules bearing retainer & weights #26262weightslowerFV disc brake assembly minimum weight clarified to 16.5 lbs total; caliper minimum weight requirement removed.
  • FV FV Intake Manifold Clarification #26008wordingwordingFV intake manifold horizontal tube measurement locations clarified between 1.500" and 8.000" on short side.

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. 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.