BoP Lab / Buttonwillow Raceway Park
FB vs F500 vs SRF vs PX pace at Buttonwillow Raceway Park
Quickest here: FB 1:38.870 Gary Hickman, Super Tour Apr 2018 race · F500 1:58.561 Lance Spiering, Super Tour Feb 2022 race · SRF 1:44.060 Vince Balch, Super Tour Apr 2017 qualifying · PX 1:43.842 Dave Tweedlie, Super Tour Feb 2022 qualifying
| Event | FB | F500 | SRF | PX | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Qual best | Race best | Trap | Qual best | Race best | Trap | vs FB | % of FB | Qual best | Race best | Trap | vs FB | % of FB | Qual best | Race best | Trap | vs FB | % of FB | |||
| Super Tour Feb 2022 CALCL222022-02-17 | 2:03.309Lance Spiering · only car | 1:58.561Lance Spiering · only car | 111.9Lance Spiering | 1:43.842Dave Tweedlie · only car | 1:44.025Dave Tweedlie · only car | 132.0Dave Tweedlie | ||||||||||||||
13 rule changes (SRF: 13)2 tyres & wheels · 1 aero · 1 cars added · 1 engine · 1 weight · 5 wording · 2 other · SRF wet tyres front P185/65R13 W2 option added; air box clarified as-delivered; SRF3 restrictor plate G301048 mandatory Jan 1 2022; P2 motorcycle engines up to 1005cc with 35mm restrictor, 2009+ stock 1075 lbs, 2008 stock 1025 lbs, modifie… · SRF wet tyres add Hoosier W2 option alongside existing H20 from October 4, 2021. · SRF adds SADEV-SRF3 6-speed sequential transmission option with ratios 3.0–0.92:1 and 3.20 final drive. · SRF seal requirements clarified: seals now must be on driveline components in designated locations; unsealed components removed and inspected by CSR or Enterprises rather than engine shipped for testing. · SRF3 alternator pulley specified as P/N G902130 or G902130A, minimum 12oz. · SRF and SRF3 mandatory identification revised: removed Ford Performance and Blue Oval decals, added Hoosier logo placement. · SRF rear springs limited to P/N 280390 only, previous part numbers no longer allowed; ground clearance wording clarified. · SRF Penske shock P/N 280396 bump stop P/N 280407 becomes mandatory, maximum one per shock, effective 05/01/2020. · SRF rain and brake rule supersedes GCR 9.3.32.B.2 effective 1/1/2024 through 12/31/2024. · SRF adds tire warmer prohibition and specifies Hoosier dry and wet tire part numbers. · SRF front nose weight minimum reduced from 35 to 32 lbs. · SRF2 becomes Regional Only; SRF3 nomenclature changed from GEN3 to Ford 1.6L conversion; SRF and SRF3 no longer compete together for points. · SRF drivers may now use Dash Windscreen Kit P/N 1180103 or P/N 180102.show
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| Super Tour Apr 2018 BUTTRA182018-04-27 | 1:39.142Gary Hickman · fastest of 2-3.130s (-3.06%) | 1:38.870Gary Hickman · fastest of 2-1.241s (-1.24%) | ||||||||||||||||||
| No rule changes on record between these events | ||||||||||||||||||||
| Super Tour Apr 2017 BUTTRA172017-04-28 | 1:42.272John LaBrie · fastest of 2 | 1:40.111Gary Hickman · fastest of 2 | 1:44.060Vince Balch · fastest of 8 · top 5 within 18.6s | 2:01.122Mike Miserendino · fastest of 7 · top 5 within 1.8s | +21.011squal +1.788s | 121.0%qual 101.7% | ||||||||||||||
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 FB" is the class's best as a share of FB'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 FB'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.