BoP Lab / Laguna Seca

AS vs SM vs T1 vs T3 pace at Laguna Seca

Quickest here: AS 1:40.712 Clark Nunes, Hoosier SCCA Super Tour (San Francisco Region) qualifying · SM 1:46.110 Tristan Littlehale, Hoosier SCCA Super Tour (San Francisco Region) race · T1 1:34.983 Ross Murray, Hoosier SCCA Super Tour (San Francisco Region) qualifying

	Event	AS			SM					T1					T3
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs AS	% of AS	Qual best	Race best	Trap	vs AS	% of AS	Qual best	Race best	Trap	vs AS	% of AS
	Hoosier SCCA Super Tour (San Francisco Region) ST19JUL262019-07-26	1:40.712Clark Nunes · fastest of 4 · top 4 within 7.9s	1:40.914Clark Nunes · fastest of 4 · top 4 within 8.0s	103.0Michael Thompson	1:46.159Tristan Littlehale · fastest of 11 · top 5 within 1.9s	1:46.110Tristan Littlehale · fastest of 11 · top 5 within 1.2s	87.0Justin Casey	+5.196squal +5.447s	105.1%qual 105.4%	1:34.983Ross Murray · fastest of 5 · top 5 within 10.0s	1:36.724Ross Murray · fastest of 5 · top 5 within 8.6s	118.4Ross Murray	-4.190squal -5.729s	95.8%qual 94.3%
48 earlier rule changes on record, in force before Hoosier SCCA Super Tour (San Francisco Region) (from 2019)13 cars added · 7 weight · 3 aero · 3 suspension & brakes · 3 tyres & wheels · 1 induction · 18 wording · T1 Camaro, CTS, Firebird, GTO restrictor increases from 67mm to 70mm flat plate. · T3 BMW E36 M3 96-00 allows alternate sway bars, 35mm front and 27mm rear. · AS Ford Mustang (79-93) 313 CID and under loses 100 lbs to 3150; over 313 CID loses 100 lbs to 3450. · T2-T4 clarifies DOT tire requirements; must have minimum U speed rating and be DOT certified; touring spec line supersedes other rules. · 09-12 Porsche Cayman newly classified in T3 at 3150 lbs with 2900cc engine. · Ford Mustang EcoBoost 3.5L classified in T1 at 3300 lbs minimum weight with 31mm restrictor. · T1 Corvette C5 body allowed C7 carbon aero parts, plus 50 lbs. · T1 Audi TTRS must conform to July 24th, 2015 revision 7 GTS rules instead of December 14th, 2011 revision 3. · T1 minimum ride height established at 3.5 inches, measured at rocker panel without driver. · T1 Porsche 928 S4/GTS-R minimum weight reduced to 3200 lbs, throttle restrictor removed. · T3 Chevrolet Camaro LT-I4 Turbo 1LE (2019-) classified with 1998 cc engine, 3450 lbs minimum weight, 245 max tire size. · T3 Honda Civic Si 2017- minimum weight reduced 100 lbs, to 2900. · Honda Civic Si 2017+ with alternate cage classified in T3 at 3075 lbs minimum weight. · T3 classifies 2014-2017 Volkswagen GTI with 35 mm turbo inlet restrictor, 3080 lbs DSG, 3050 lbs standard. · Porsche 928 S4/928 GTS-R newly classified in T1 at 3500 lbs minimum with 60mm flat plate restrictor. · BMW E36 M3 (96-00) BMWCCA I Sport newly classified in T3 at 3100 lbs minimum weight. · SM fuel pump and filter must be Mazda or OEM Equivalent part. · T1-LP Ford Mustang GT 5.0L 2018+ classified at 3400 lbs with 65mm flat plate restrictor. · T1-LP Ford Mustang GT 5.0L 2018+ classified at 3400 lbs with 65mm flat plate restrictor. · T3 Subaru WRX (2015-) classified at 3275 lbs with 35mm turbo inlet restrictor required. · T4 Mazda MX-5 Club (06-15) and (2016-), T3 MX-5 Cup and Miata (2016-) hardtop rules clarified; wording changes to permitted parts and specifications. · T3 Mazda MX-5 NC 06-15 wheel width increases from 17x7 to 17x8. · T3 Mazda MX-5 NC 06-15 now allows any aftermarket header. · T3 Saturn Sky intercooler tolerance increases from 32mm to 35mm TIR; new calipers and springs permitted. · T2, T3, T4 now allow any thermostat serving only OE intent, previously restricted. · T3 Subaru Legacy GT/Spec B 05-09 newly classified with 2457cc, 18×9 wheels, 245 tires, 3300 lbs. · T3 and T4 Mazda MX-5 Miata eligibility capped at 2018 model year, effective 2019-03-01. · AS Spec Mustang (SMG) newly classified with 107.1 wheelbase, 3.73 gears, 355mm front brakes, 300mm rear. · 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. · T3 Mazda Mazdaspeed3 07-09 front brake disc increases to 320mm vented, rear to 300mm solid. · T1-LP Mustang GT350(R) spec line replaced with 2015+ model parameters including 5163cc engine, 3650 lbs curb weight, 315 tire size. · Ford Mustang FP350S (2018) classified in T1-LP at 3600 lbs with 18×11 wheels and 315 tires. · T1 suspension rules clarified: spherical bearings and bushings now explicitly permitted, alternate control arms allowed. · T1 Porsche 996 drops 200 lbs to 3000; 996 GT3 Cup drops 150 lbs to 3000; 997 drops 50 lbs to 3100. · Porsche 997 T1 Maximum now allows OEM PDK transmission alongside existing drivetrain options. · T1 Acura NSX Turbo World Challenge weight to 3100 lbs, restrictor to 44mm. · T1-T3 spec cars receive clarifications on permitted modifications, documentation requirements, and rule conformance; no performance changes. · T4 Ford Fiesta ST years corrected to 14-; T4 Fiat 124/Abarth Edition years added 16-18; battery rule clarified. · T3 BMW SpecE46 rules reference updated from Appendix N to Version 2.6 Effective Jan 1, 2019. · T3 Nissan 350Z Track/Touring/Standard/Nismo 03-08 permitted to use Nissan brake kit part number 41000-BRKIT. · T1-T3 spec cars receive clarifications on permitted modifications, documentation requirements, and rule conformance; no performance changes. · T2-T4 subframe bushings may now be replaced with non-spherical bushings of any material. · T3 field loses 50 lbs across 27 cars including Acura TL, BMW 335i, Camaro, Mustang, Miata, RX-8, 370Z, WRX. · T3 Ford Mustang EcoBoost gains Ford Motorsports or Brembo brake kit options, +100 lb. · T3 FR-S/86 and BRZ: wheels to 17x9, tires to 255, weight to 2750 lbs. · T3 BMW SpecE46 now permits any DOT tire up to 225 width as alternate to spec tire.showhide 2019-07-01 T1 Request BoP Baten - T1 Camaro - Follow up to Letter # 26145 #26900inductionfasterT1 Camaro, CTS, Firebird, GTO restrictor increases from 67mm to 70mm flat plate. 2019-07-01 T3 Request BMW e36 M3 sway bar and links #26885suspension & brakessuspension & brakesT3 BMW E36 M3 96-00 allows alternate sway bars, 35mm front and 27mm rear. 2019-05-31 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. 2019-05-31 T1 Clarify DOT tires touring #26556tyres & wheelstyres & wheelsT2-T4 clarifies DOT tire requirements; must have minimum U speed rating and be DOT certified; touring spec line supersedes other rules. 2019-05-31 T3 Request to properly class base Porsche Cayman #26276cars addedcars added09-12 Porsche Cayman newly classified in T3 at 3150 lbs with 2900cc engine. 2019-05-01 T1 Request to Classify EcoBoost Mustang #25841cars addedcars addedFord Mustang EcoBoost 3.5L classified in T1 at 3300 lbs minimum weight with 31mm restrictor. 2019-05-01 T1 Request Corvette aerodynamic aids #26265aeroslowerT1 Corvette C5 body allowed C7 carbon aero parts, plus 50 lbs. 2019-05-01 T1 Audi TTRS VTS Documentation Revision #26578wordingunclearT1 Audi TTRS must conform to July 24th, 2015 revision 7 GTS rules instead of December 14th, 2011 revision 3. 2019-05-01 T1 Request Ride Height Clarification #26599wordingwordingT1 minimum ride height established at 3.5 inches, measured at rocker panel without driver. 2019-05-01 T1 Opposes Unfair weight and throttle restrictor #26719weight -300 lbsfasterT1 Porsche 928 S4/GTS-R minimum weight reduced to 3200 lbs, throttle restrictor removed. 2019-05-01 T3 Request to classify a 2019 Chevrolet Camaro LT-I4 Turbo 1LE #25731cars addedcars addedT3 Chevrolet Camaro LT-I4 Turbo 1LE (2019-) classified with 1998 cc engine, 3450 lbs minimum weight, 245 max tire size. 2019-05-01 T3 T3 Civic Si weight change #26294weightfasterT3 Honda Civic Si 2017- minimum weight reduced 100 lbs, to 2900. 2019-05-01 T3 Class Civic Si 2017+ w/ alternate cage #26449cars addedcars addedHonda Civic Si 2017+ with alternate cage classified in T3 at 3075 lbs minimum weight. 2019-05-01 T3 Classify 2014-2017 MK7 Volkswagen GTI for T3 #26695cars addedcars addedT3 classifies 2014-2017 Volkswagen GTI with 35 mm turbo inlet restrictor, 3080 lbs DSG, 3050 lbs standard. 2019-04-01 T1 Request to classify the Porsche 928GTS/S4 in Touring 1 #26315cars addedcars addedPorsche 928 S4/928 GTS-R newly classified in T1 at 3500 lbs minimum with 60mm flat plate restrictor. 2019-04-01 T3 Request to allow E36 M3 in T3 prepared to BMWCCA I sport #25195cars addedcars addedBMW E36 M3 (96-00) BMWCCA I Sport newly classified in T3 at 3100 lbs minimum weight. 2019-03-01 SM Request to allow aftermarket fuel filters. #26370wordingwordingSM fuel pump and filter must be Mazda or OEM Equivalent part. 2019-03-01 T1 Request Mustang GT Limited Prep 2018 Classification #24431cars addedcars addedT1-LP Ford Mustang GT 5.0L 2018+ classified at 3400 lbs with 65mm flat plate restrictor. 2019-03-01 T3 Request Mustang GT Limited Prep 2018 Classification #24431cars addedcars addedT1-LP Ford Mustang GT 5.0L 2018+ classified at 3400 lbs with 65mm flat plate restrictor. 2019-03-01 T3 Classify 2015+ WRX #25832cars addedcars addedT3 Subaru WRX (2015-) classified at 3275 lbs with 35mm turbo inlet restrictor required. 2019-03-01 T3 Correct Mazda MX-5 Hard Top Notes #26137wordingwordingT4 Mazda MX-5 Club (06-15) and (2016-), T3 MX-5 Cup and Miata (2016-) hardtop rules clarified; wording changes to permitted parts and specifications. 2019-03-01 T3 Request to allow T3 06-15 Miata 17x8 wheels #26161tyres & wheelsfasterT3 Mazda MX-5 NC 06-15 wheel width increases from 17x7 to 17x8. 2019-03-01 T3 Request T3 06-15 Miata header #26162aerofasterT3 Mazda MX-5 NC 06-15 now allows any aftermarket header. 2019-03-01 T3 Request Pontiac GXP same allowances to Saturn Sky #26175aerofasterT3 Saturn Sky intercooler tolerance increases from 32mm to 35mm TIR; new calipers and springs permitted. 2019-03-01 T3 Consider opening class rules to allow any thermostat #26187wordingwordingT2, T3, T4 now allow any thermostat serving only OE intent, previously restricted. 2019-03-01 T3 2005-2009 Legacy GT/Spec B #26384cars addedcars addedT3 Subaru Legacy GT/Spec B 05-09 newly classified with 2457cc, 18×9 wheels, 245 tires, 3300 lbs. 2019-03-01 T3 Cap 2016 Mazda Miata year at 2018 #26388wordingwordingT3 and T4 Mazda MX-5 Miata eligibility capped at 2018 model year, effective 2019-03-01. 2019-02-01 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. 2019-02-01 SM Request 99-00 replacement Wire harnesses #25602wordingwordingSM 1999-2000 model year cars may use replacement Mazda ECU and injector harnesses, unmodified. 2019-02-01 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. 2019-02-01 SM Strike Tire Tread Language #26123wordingwordingSM removes tire tread protrusion beyond fender opening requirement from GCR 9.1.7.C.5. 2019-02-01 T3 Request correction on brake sizes #26170wordingwordingT3 Mazda Mazdaspeed3 07-09 front brake disc increases to 320mm vented, rear to 300mm solid. 2019-01-01 T1 Class 2015+ Mustang GT350(R) #21466wordingwordingT1-LP Mustang GT350(R) spec line replaced with 2015+ model parameters including 5163cc engine, 3650 lbs curb weight, 315 tire size. 2019-01-01 T1 Request to Classify Ford FP350S in T1-LP #25341cars addedcars addedFord Mustang FP350S (2018) classified in T1-LP at 3600 lbs with 18×11 wheels and 315 tires. 2019-01-01 T1 Amendment to Request #25555 #25556wordingwordingT1 suspension rules clarified: spherical bearings and bushings now explicitly permitted, alternate control arms allowed. 2019-01-01 T1 Request to balance 996 v 997 T1 weight #25658weightfasterT1 Porsche 996 drops 200 lbs to 3000; 996 GT3 Cup drops 150 lbs to 3000; 997 drops 50 lbs to 3100. 2019-01-01 T1 Request to Add PDK Transmission to 997 Porsche Spec Line #25668wordingwordingPorsche 997 T1 Maximum now allows OEM PDK transmission alongside existing drivetrain options. 2019-01-01 T1 T1 World Challenge/Grand AM Spec Cars #25687weightslowerT1 Acura NSX Turbo World Challenge weight to 3100 lbs, restrictor to 44mm. 2019-01-01 T1 Add Clarification to Spec Car Classifications Vehicle Spec #25774wordingwordingT1-T3 spec cars receive clarifications on permitted modifications, documentation requirements, and rule conformance; no performance changes. 2019-01-01 T3 Errors, Omissions, and Updates (Various) #22414wordingwordingT4 Ford Fiesta ST years corrected to 14-; T4 Fiat 124/Abarth Edition years added 16-18; battery rule clarified. 2019-01-01 T3 Request to update SpecE46 Appendix N. with 2019 Rules #25722wordingwordingT3 BMW SpecE46 rules reference updated from Appendix N to Version 2.6 Effective Jan 1, 2019. 2019-01-01 T3 Request Alternative Nissan Brake Parts - 350Z #25747suspension & brakessuspension & brakesT3 Nissan 350Z Track/Touring/Standard/Nismo 03-08 permitted to use Nissan brake kit part number 41000-BRKIT. 2019-01-01 T3 Add Clarification to Spec Car Classifications Vehicle Spec #25774wordingwordingT1-T3 spec cars receive clarifications on permitted modifications, documentation requirements, and rule conformance; no performance changes. 2019-01-01 T3 Clarify Subframe Bushings Permitted for T2-T4 #25800wordingwordingT2-T4 subframe bushings may now be replaced with non-spherical bushings of any material. 2019-01-01 T3 Additional weight adjustments for T3 cars T3 weight loss #25803weightfasterT3 field loses 50 lbs across 27 cars including Acura TL, BMW 335i, Camaro, Mustang, Miata, RX-8, 370Z, WRX. 2019-01-01 T3 Request for Alternate EcoBoost Mustang Brakes #25813suspension & brakesslowerT3 Ford Mustang EcoBoost gains Ford Motorsports or Brembo brake kit options, +100 lb. 2019-01-01 T3 Request to Add the FR-S/86 and BRZ Spec Lines to T3 #25888weightfasterT3 FR-S/86 and BRZ: wheels to 17x9, tires to 255, weight to 2750 lbs. 2019-01-01 T3 Request to Clarify BMW SpecE46 Tire Verbiage #26027tyres & wheelstyres & wheelsT3 BMW SpecE46 now permits any DOT tire up to 225 width as alternate to spec tire.

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.