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BoP Lab / Buttonwillow Raceway Park

FX 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+FV+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: FX 1:05.067 David Schnell, Cal Club 2022 qualifying

EventFX
Qual bestRace bestTrap
Cal Club 2022 CALCL222022-02-171:05.067David Schnell · fastest of 3 · top 3 within 46.1s1:49.461Max Parker · fastest of 3 · top 3 within 4.6s117.4Terrance Carraher
15 earlier rule changes on record, in force before Cal Club 2022 (from 2020)6 cars added · 4 tyres & wheels · 1 engine · 3 wording · 1 other · Formula Mazda tire marking no longer required; compliance now referenced to updated online specifications document. · FX Formula 4 tire choice becomes unrestricted; must comply with FIA F4 2015 Technical Regulations and subsequent safety requirements. · FX USF2000 Tube Frame front tyre changes from radial to unspecified type, rear tyre options added. · FX Formula Renault 2.0 (00-17) tire choice unrestricted; original components required except repairs. · FX USF2000 Tube Frame allows Hoosier radials 20.5x7.0x13 front and 22.5x8.0x13 rear, FC-compliant shocks, Wilwood brakes, Bosch spark plugs. · FX USF2000 Tube Frame now allows any Hoosier radial tire 20.5x7.0x13 front, 22.5x8.0x13 rear. · FX adds 2000-2009 Formula Renault 2.0 / Fran-Am 2000 classified at 1250 lbs with sealed 2.0L Renault F4R 832 engine. · Formula Renault 2.0 (2010–2017) newly classified in FX, must comply with Table 1 notes. · FX FormulaSPEED FS2.0 specification requirements updated; World Speed Inc. deadline removed, compliance now per SCCA website. · Formula Ireland / Formula FX added to FX classification under Table 1 with compliance notes. · Formula Ireland/Formula FX car addition to FX Table 1 pending specification submission; not recommended. · Ex-Pro Formula Super Vee classified in FX with 1190 lbs minimum weight, 1600cc or 1835cc VW engine, 6in front and 8in rear wheels. · FormulaSPEED reclassified from FA to FX with 2.0L Mazda MZR engine, 1350 lbs minimum weight, sealed ECU and dampers. · FX Formula Mazda no longer requires tire marking; must comply with December 2019 GCR rules. · Pro Formula F 2000 Tube Frame engine now must follow current FC rules with restricted ECU map, cams, and air restrictor required.showhide
  • FM Rule Set Clarification #31881wordingwordingFormula Mazda tire marking no longer required; compliance now referenced to updated online specifications document.
  • E&O F4 Tires #31940tyres & wheelsfasterFX Formula 4 tire choice becomes unrestricted; must comply with FIA F4 2015 Technical Regulations and subsequent safety requirements.
  • E&O USF2000 Tube Frame #31951tyres & wheelsunclearFX USF2000 Tube Frame front tyre changes from radial to unspecified type, rear tyre options added.
  • URGENT - FX- Formula Renault Tire #32058tyres & wheelsfasterFX Formula Renault 2.0 (00-17) tire choice unrestricted; original components required except repairs.
  • Rules Adjustment #30950otherotherFX USF2000 Tube Frame allows Hoosier radials 20.5x7.0x13 front and 22.5x8.0x13 rear, FC-compliant shocks, Wilwood brakes, Bosch spark plugs.
  • FX/FRP Tire Rule #30723tyres & wheelstyres & wheelsFX USF2000 Tube Frame now allows any Hoosier radial tire 20.5x7.0x13 front, 22.5x8.0x13 rear.
  • Classify the 2000-2009 Formula Renault 2.0 / Fran-Am 2000 #30460cars addedcars addedFX adds 2000-2009 Formula Renault 2.0 / Fran-Am 2000 classified at 1250 lbs with sealed 2.0L Renault F4R 832 engine.
  • Request for Car Classification to Compete in Formula X #29933cars addedcars addedFormula Renault 2.0 (2010–2017) newly classified in FX, must comply with Table 1 notes.
  • Update specifications for FormulaSPEED cars #29674wordingwordingFX FormulaSPEED FS2.0 specification requirements updated; World Speed Inc. deadline removed, compliance now per SCCA website.
  • Follow up to to Letter#28991 Request for FX classification #29281cars addedcars addedFormula Ireland / Formula FX added to FX classification under Table 1 with compliance notes.
  • Request to be added to FX group #28991cars addedcars addedFormula Ireland/Formula FX car addition to FX Table 1 pending specification submission; not recommended.
  • Request to classify FSV in FX #28057cars addedcars addedEx-Pro Formula Super Vee classified in FX with 1190 lbs minimum weight, 1600cc or 1835cc VW engine, 6in front and 8in rear wheels.
  • Classify FormulaSPEED in FX #28715cars addedcars addedFormulaSPEED reclassified from FA to FX with 2.0L Mazda MZR engine, 1350 lbs minimum weight, sealed ECU and dampers.
  • Request to remove tire marking language from FM #28415wordingwordingFX Formula Mazda no longer requires tire marking; must comply with December 2019 GCR rules.
  • Change to FX Table 1 #28322engineslowerPro Formula F 2000 Tube Frame engine now must follow current FC rules with restricted ECU map, cams, and air restrictor required.

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.