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BoP Lab / Laguna Seca

GT3 vs FV vs SM vs FB pace at Laguna Seca

Class · click a class to switch, + to compare alongside (up to 4: remove one to add another)
ASB-SpecEPFAvsFB×FCFE2FFFPvsFV×GT1GT2GT3×HPP2vsSM×SRF3STLSTUT1T2T3T4Show 5 inactive classes
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

Quickest here: GT3 1:34.730 Collin Jackson, Super Tour Jul 2019 qualifying · FV 1:48.104 Dennis Andrade, Super Tour Jul 2019 qualifying · SM 1:46.110 Tristan Littlehale, Super Tour Jul 2019 race · FB 1:24.666 Jake Latham, Super Tour Jul 2019 qualifying

EventGT3FVSMFB
Qual bestRace bestTrapQual bestRace bestTrapvs GT3% of GT3Qual bestRace bestTrapvs GT3% of GT3Qual bestRace bestTrapvs GT3% of GT3
Super Tour Jul 2019 ST19JUL262019-07-261:34.730Collin Jackson · fastest of 5 · top 5 within 14.4s1:36.476Collin Jackson · fastest of 4 · top 4 within 7.2s109.7Collin Jackson1:48.104Dennis Andrade · fastest of 7 · top 5 within 3.8s1:49.588Dennis Andrade · fastest of 7 · top 5 within 1.4s88.2Dennis Andrade+13.112squal +13.374s113.6%qual 114.1%1:46.159Tristan Littlehale · fastest of 11 · top 5 within 1.9s1:46.110Tristan Littlehale · fastest of 11 · top 5 within 1.2s87.0Justin Casey+9.634squal +11.429s110.0%qual 112.1%1:24.666Jake Latham · only car1:25.752Jake Latham · only car116.0Jake Latham-10.724squal -10.064s88.9%qual 89.4%
15 earlier rule changes on record, in force before Super Tour Jul 2019 (from 2019)2 cars added · 2 weight · 1 engine · 1 suspension & brakes · 5 wording · 4 other · FV exhaust outlet opening max distance from body rear increased from 3 to 4 inches. · FV front track maximum 52.500 inches; rear track 49.125–50.750 inches; spacers now allowed. · GTX tube frame cars now allowed fuel injection with maximum 90mm throttle body. · GTX adds Ligier JS2 R classification with restrictor and minimum weight. · FV disc brake assembly minimum weight clarified to 16.5 lbs total; caliper minimum weight requirement of 1.65 lbs removed. · GT3 Mazda 13B and Renesis engines completely respecified with new induction types and weights ranging 2080–2350 lbs. · GT1 and GT2/3/Lite remove ride height ground clearance rules; cars may now touch ground when tires deflate. · GT3 13B Street Port removed; 13B Peripheral Port weight raised to 2400 lbs; 13B Bridge Port weight raised to 2400 lbs; Renesis Street Port removed; Renesis Peripheral Port weight raised to 2450 lbs; Renesis Bridge Port weight raised to 245… · GT3 adds Mitsubishi 4G69 SOHC engine, 2378 cc, 2195 lbs, 31mm SIR. · SM fuel pump and filter now permitted as Mazda or OEM equivalent part. · FV intake manifold horizontal tube measurement location clarified; removed specific distance ranges from rule text. · 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. · GTX FIA GT3: Audi R8 now 40 mm restrictor and 2900 lbs; BMW Z4 now 70 mm restrictor and 2800 lbs; Ferrari 488 now 35 mm restrictor, TIR, and 3025 lbs.showhide
  • FV Exhaust termination rule E&O #26702wordingwordingFV exhaust outlet opening max distance from body rear increased from 3 to 4 inches.
  • FV E&O Dimensions #26674suspension & brakessuspension & brakesFV front track maximum 52.500 inches; rear track 49.125–50.750 inches; spacers now allowed.
  • GT3 Request GTX Fuel injection for previous GT-1 tube frame cars #26141engineadded · engineGTX tube frame cars now allowed fuel injection with maximum 90mm throttle body.
  • GT3 Request to Classify Ligier JS2 R #26535cars addedaddedGTX adds Ligier JS2 R classification with restrictor and minimum weight.
  • FV Request to clarify Disc Brake rules bearing retainer & weights #26262weightslower · weightFV disc brake assembly minimum weight clarified to 16.5 lbs total; caliper minimum weight requirement of 1.65 lbs removed.
  • GT3 26076 revised Spec line chart #26528otherunclearGT3 Mazda 13B and Renesis engines completely respecified with new induction types and weights ranging 2080–2350 lbs.
  • GT3 Request Ride Height Clarification #26600wordingfasterGT1 and GT2/3/Lite remove ride height ground clearance rules; cars may now touch ground when tires deflate.
  • GT3 Request clarification on bridge porting for rotary #26076weightslower · weightGT3 13B Street Port removed; 13B Peripheral Port weight raised to 2400 lbs; 13B Bridge Port weight raised to 2400 lbs; Renesis Street Port removed; Renesis Peripheral Port weight raised to 2450 lbs; Renesis Bridge Port weight raised to 245…
  • GT3 Request to add 4G69 Mitsubishi #26154cars addedaddedGT3 adds Mitsubishi 4G69 SOHC engine, 2378 cc, 2195 lbs, 31mm SIR.
  • SM Request to allow aftermarket fuel filters. #26370otheraddedSM fuel pump and filter now permitted as Mazda or OEM equivalent part.
  • FV FV Intake Manifold Clarification #26008wordingwordingFV intake manifold horizontal tube measurement location clarified; removed specific distance ranges from rule text.
  • 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.
  • 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.
  • SM Strike Tire Tread Language #26123wordingremovedSM tire tread protrusion language removed from GCR 9.1.7.C.5.
  • GT3 GTX Homologation table update #26034otherunclearGTX FIA GT3: Audi R8 now 40 mm restrictor and 2900 lbs; BMW Z4 now 70 mm restrictor and 2800 lbs; Ferrari 488 now 35 mm restrictor, TIR, and 3025 lbs.

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 GT3" is the class's best as a share of GT3'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 GT3'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.