BoP Lab / Laguna Seca

B-Spec vs T3 vs SM pace at Laguna Seca

Quickest here: B-Spec 1:52.287 Frank Schwartz, Super Tour Jul 2019 race · SM 1:46.110 Tristan Littlehale, Super Tour Jul 2019 race

	Event	B-Spec			T3					SM
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs B-Spec	% of B-Spec	Qual best	Race best	Trap	vs B-Spec	% of B-Spec
	Super Tour Jul 2019 ST19JUL262019-07-26	1:53.083Joseph Gersch · fastest of 4 · top 4 within 1.6s	1:52.287Frank Schwartz · fastest of 4 · top 4 within 2.5s	82.0Ali Naimi						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	-6.177squal -6.924s	94.5%qual 93.9%
35 earlier rule changes on record, in force before Super Tour Jul 2019 (from 2019)11 cars added · 5 suspension & brakes · 5 weight · 2 engine · 2 tyres & wheels · 1 removed · 6 wording · 3 other · B-Spec 2007-10 Mini Cooper adds OBX header part #10-2101-2S as E&O allowance. · B-Spec added to GCR 9.3.26 fuel cell exception list; stock fuel tank permitted. · SM fuel pump and filter now permitted as Mazda or OEM equivalent part. · T1-LP Ford Mustang GT 5.0L 2018- classified at 3400 lbs with 65mm restrictor, T2 and T3 Mustangs limited to 2015-2017. · T4 and T3 Mazda MX-5 hardtop rules clarified: any OEM or aftermarket top permitted if retaining OEM silhouette; specific part numbers listed. · T2, T3, T4 now allow any thermostat serving original equipment intent only. · T3 and T4 Mazda MX-5 Miata eligibility capped at 2016–2018 model years. · SM allows factory Mazda ECU and injector harnesses (P/N 0000-10-020E-99, 0000-10-080D-99) on 1999–2000 model year cars, unmodified. · SM electrical rules reorganized and clarified; alternator now externally regulated only by OEM ECU or master kill switch; harness repair by splicing permitted. · SM tire tread protrusion language removed from GCR 9.1.7.C.5. · B-Spec adds Canadian Nissan Micra Cup Car, 1598 cc, 2450 lbs minimum, with Micra Cup suspension kit allowed. · B-Spec Toyota Yaris 12-18 added with 1491cc engine, 3.55 first gear, Bilstein B14 suspension, K&N intake allowed. · B-Spec exhaust wording clarified: oxygen sensors must stay stock location, primary catalyst unmodifiable. · T4 Celica GT wheelbase 2600 and 15x7 wheels added; Forte years narrowed; Fiesta ST starts 2014; Fiat 124 years 16-18 added; battery rule clarified. · T1–T4 spec car classifications clarified with permitted parts, rule conformance versions, and exclusions of other touring modifications. · T2–T4 subframe bushings now permitted to be replaced with non-spherical bushings of any material.showhide 2019-07-01 B-Spec Request to allow OBX Header for 2007-10 Mini Cooper #26977engineadded · engineB-Spec 2007-10 Mini Cooper adds OBX header part #10-2101-2S as E&O allowance. 2019-07-01 T3 Request BMW e36 M3 sway bar and links #26885suspension & brakes 2019-05-31 T3 Request to properly class base Porsche Cayman #26276weight 2019-05-01 T3 Request to classify a 2019 Chevrolet Camaro LT-I4 Turbo 1LE #25731cars added 2019-05-01 T3 T3 Civic Si weight change #26294weight 2019-05-01 T3 Class Civic Si 2017+ w/ alternate cage #26449cars added 2019-05-01 T3 Classify 2014-2017 MK7 Volkswagen GTI for T3 #26695cars added 2019-04-01 T3 Request to allow E36 M3 in T3 prepared to BMWCCA I sport #25195cars added 2019-03-01 B-Spec Request to add B-Spec to GCR 9.3.26 fuel cell #26132cars addedaddedB-Spec added to GCR 9.3.26 fuel cell exception list; stock fuel tank permitted. 2019-03-01 SM Request to allow aftermarket fuel filters. #26370otheraddedSM fuel pump and filter now permitted as Mazda or OEM equivalent part. 2019-03-01 T3 Request Mustang GT Limited Prep 2018 Classification #24431cars addedaddedT1-LP Ford Mustang GT 5.0L 2018- classified at 3400 lbs with 65mm restrictor, T2 and T3 Mustangs limited to 2015-2017. 2019-03-01 T3 Classify 2015+ WRX #25832cars added 2019-03-01 T3 Correct Mazda MX-5 Hard Top Notes #26137wordingwordingT4 and T3 Mazda MX-5 hardtop rules clarified: any OEM or aftermarket top permitted if retaining OEM silhouette; specific part numbers listed. 2019-03-01 T3 Request to allow T3 06-15 Miata 17x8 wheels #26161tyres & wheels 2019-03-01 T3 Request T3 06-15 Miata header #26162other 2019-03-01 T3 Request Pontiac GXP same allowances to Saturn Sky #26175weight 2019-03-01 T3 Consider opening class rules to allow any thermostat #26187engineadded · engineT2, T3, T4 now allow any thermostat serving original equipment intent only. 2019-03-01 T3 2005-2009 Legacy GT/Spec B #26384cars added 2019-03-01 T3 Cap 2016 Mazda Miata year at 2018 #26388cars addedremoved · cars addedT3 and T4 Mazda MX-5 Miata eligibility capped at 2016–2018 model years. 2019-02-01 SM Request 99-00 replacement Wire harnesses #25602otheraddedSM allows factory Mazda ECU and injector harnesses (P/N 0000-10-020E-99, 0000-10-080D-99) on 1999–2000 model year cars, unmodified. 2019-02-01 SM Organize and Clarify 9.1.7.C.1.o. #25913wordingwordingSM electrical rules reorganized and clarified; alternator now externally regulated only by OEM ECU or master kill switch; harness repair by splicing permitted. 2019-02-01 SM Strike Tire Tread Language #26123wordingremovedSM tire tread protrusion language removed from GCR 9.1.7.C.5. 2019-02-01 T3 Request correction on brake sizes #26170suspension & brakes 2019-01-01 B-Spec Request to classify Canadian Nissan Micra Cup cars #25216cars addedaddedB-Spec adds Canadian Nissan Micra Cup Car, 1598 cc, 2450 lbs minimum, with Micra Cup suspension kit allowed. 2019-01-01 B-Spec Request updated Toyota Yaris Spec Lines #25483cars addedaddedB-Spec Toyota Yaris 12-18 added with 1491cc engine, 3.55 first gear, Bilstein B14 suspension, K&N intake allowed. 2019-01-01 B-Spec Update wording of exhaust #26022wordingwordingB-Spec exhaust wording clarified: oxygen sensors must stay stock location, primary catalyst unmodifiable. 2019-01-01 T3 Errors, Omissions, and Updates (Various) #22414wordingwordingT4 Celica GT wheelbase 2600 and 15x7 wheels added; Forte years narrowed; Fiesta ST starts 2014; Fiat 124 years 16-18 added; battery rule clarified. 2019-01-01 T3 Request to update SpecE46 Appendix N. with 2019 Rules #25722removed 2019-01-01 T3 Request Alternative Nissan Brake Parts - 350Z #25747suspension & brakes 2019-01-01 T3 Add Clarification to Spec Car Classifications Vehicle Spec #25774wordingwordingT1–T4 spec car classifications clarified with permitted parts, rule conformance versions, and exclusions of other touring modifications. 2019-01-01 T3 Clarify Subframe Bushings Permitted for T2-T4 #25800suspension & brakesadded · suspension & brakesT2–T4 subframe bushings now permitted to be replaced with non-spherical bushings of any material. 2019-01-01 T3 Additional weight adjustments for T3 cars T3 weight loss #25803weight 2019-01-01 T3 Request for Alternate EcoBoost Mustang Brakes #25813suspension & brakes 2019-01-01 T3 Request to Add the FR-S/86 and BRZ Spec Lines to T3 #25888weight 2019-01-01 T3 Request to Clarify BMW SpecE46 Tire Verbiage #26027tyres & wheels

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 B-Spec" is the class's best as a share of B-Spec'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 B-Spec'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.