BoP Labbeta

BoP Lab / Buttonwillow Raceway Park

AS vs SM vs BSpc vs FV pace at Buttonwillow Raceway Park

Class · click a class to switch, + to compare alongside (up to 4: remove one to add another)
AS×B SpecB-SpecvsBSpc×EPF6F500FAFCFE 2FE2FFFPvsFV×FXGT1GT2GT3GT3UGTLGTXHPPP1P2PXvsSM×SMXSRF3STLSTUT1T2T3T4
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: AS 2:01.590 Christopher Qualls, Cal Club Region Hoosier SCCA Super Tour @ Buttonwillow Raceway Park race · SM 2:04.724 Dakota Dickerson, Cal Club Region Hoosier SCCA Super Tour @ Buttonwillow Raceway Park qualifying · FV 2:08.616 Mark Edwards, Cal Club Region Hoosier SCCA Super Tour @ Buttonwillow Raceway Park race

EventASSMBSpcFV
Qual bestRace bestTrapQual bestRace bestTrapvs AS% of ASQual bestRace bestTrapvs AS% of ASQual bestRace bestTrapvs AS% of AS
Cal Club Region Hoosier SCCA Super Tour @ Buttonwillow Raceway Park ST20FEB212020-02-212:05.363Christopher Qualls · fastest of 3 · top 3 within 7.3s2:01.590Christopher Qualls · fastest of 3 · top 3 within 9.9s123.6Christopher Qualls2:04.724Dakota Dickerson · fastest of 19 · top 5 within 0.6s2:05.409Justin Casey · fastest of 19 · top 5 within 0.2s118.6Nick Leverone+3.819squal -0.639s103.1%qual 99.5%2:08.765Dennis Andrade · fastest of 8 · top 5 within 2.7s2:08.616Mark Edwards · fastest of 8 · top 5 within 2.9s113.5Dennis Andrade+7.026squal +3.402s105.8%qual 102.7%
21 earlier rule changes on record, in force before Cal Club Region Hoosier SCCA Super Tour @ Buttonwillow Raceway Park (from 2019)4 cars added · 3 tyres & wheels · 3 weight · 1 aero · 1 suspension & brakes · 9 wording · AS rear trailing arms may be replaced with tubular arms maintaining stock length and axle location purpose only. · AS Ford and GM full-prep cars get 200 lb weight reduction, up from 150 lb. · 05-10 Ford Mustang Coupe GT 4.6L OHC classified AS with 3200 lbs minimum weight, HR cam restricted prep. · AS 10-15 Chevrolet Camaro Full Prep classified with 3400 lbs base weight, over 313 CID engine 3700 lbs maximum. · 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. · AS Spec Mustang (SMG) added as Restricted Prep class. · 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. · AS class minimum ride height clarified to 5 inches measured at rocker panel, excluding seams and cladding. · AS Ford Mustang (79-93) 313 CID and under loses 100 lbs to 3150; over 313 CID loses 100 lbs to 3450. · 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. · SM fuel pump and filter must be Mazda or OEM Equivalent part. · AS Spec Mustang (SMG) newly classified with 107.1 wheelbase, 3.73 gears, 355mm front brakes, 300mm rear. · FV intake manifold horizontal tube measurement locations clarified between 1.500" and 8.000" on short side. · SM 1999-2000 model year cars may use replacement Mazda ECU and injector harnesses, unmodified. · SM electrical rules reorganized and clarified; alternator external regulation now prohibited except via OEM ECU/kill switch. · SM removes tire tread protrusion beyond fender opening requirement from GCR 9.1.7.C.5.showhide
  • AS Rear Trailing Arms #28007suspension & brakessuspension & brakesAS rear trailing arms may be replaced with tubular arms maintaining stock length and axle location purpose only.
  • AS Weight reduction for cars running iron heads #28010weightfasterAS Ford and GM full-prep cars get 200 lb weight reduction, up from 150 lb.
  • AS 05-10 Mustang with HR cam classification #28226cars addedcars added05-10 Ford Mustang Coupe GT 4.6L OHC classified AS with 3200 lbs minimum weight, HR cam restricted prep.
  • AS 10-15 Camaro Full Prep classification #28227cars addedcars addedAS 10-15 Chevrolet Camaro Full Prep classified with 3400 lbs base weight, over 313 CID engine 3700 lbs maximum.
  • 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.
  • AS Request to add SMG to 9.1.6.B.1 AS Intent #27140cars addedcars addedAS Spec Mustang (SMG) added as Restricted Prep class.
  • 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.
  • AS Request Ride Height Clarification #26598wordingwordingAS class minimum ride height clarified to 5 inches measured at rocker panel, excluding seams and cladding.
  • AS Request to Revert to 2017 Weights #25885weightfasterAS Ford Mustang (79-93) 313 CID and under loses 100 lbs to 3150; over 313 CID loses 100 lbs to 3450.
  • 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.
  • SM Request to allow aftermarket fuel filters. #26370wordingwordingSM fuel pump and filter must be Mazda or OEM Equivalent part.
  • AS SMG Mustang eligibility in American sedan #26224cars addedcars addedAS Spec Mustang (SMG) newly classified with 107.1 wheelbase, 3.73 gears, 355mm front brakes, 300mm rear.
  • FV FV Intake Manifold Clarification #26008wordingwordingFV intake manifold horizontal tube measurement locations clarified between 1.500" and 8.000" on short side.
  • SM Request 99-00 replacement Wire harnesses #25602wordingwordingSM 1999-2000 model year cars may use replacement Mazda ECU and injector harnesses, unmodified.
  • SM Organize and Clarify 9.1.7.C.1.o. #25913wordingwordingSM electrical rules reorganized and clarified; alternator external regulation now prohibited except via OEM ECU/kill switch.
  • SM Strike Tire Tread Language #26123wordingwordingSM removes tire tread protrusion beyond fender opening requirement from GCR 9.1.7.C.5.

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 AS" is the class's best as a share of AS'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 AS'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.