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BoP Lab / Buttonwillow Raceway Park

FE vs FM vs FB pace at Buttonwillow Raceway Park

FE at every track →

Lap times across years say as much about the weather as the class. % of FE is each class's best lap as a share of FE's on the same day, so the conditions drop out: 100% is level, less is quicker, and a move in it is the class getting faster or slower against the field.

Class · click a class to switch, + to compare alongside (up to 4)
AS+B-Spec+EP+FA+vsFB×FC+FE×FE2+FF+vsFM×FP+FV+FX+GT1+GT2+GTX+HP+P+P2+SM+SMX+SRF3+STL+STU+T1+T2+T3+T4+Show 12 inactive classes
Reference · what % is measured against

Quickest here: FE 1:47.040 Brandon Chappell, Super Tour Apr 2018 race · FM 1:45.954 Mike Anderson, Super Tour Apr 2018 race · FB 1:38.870 Gary Hickman, Super Tour Apr 2018 race

1:381:401:421:441:461:481:501 rule change between Super Tour Apr 2018 and Super Tour Apr 20191 ▾FE race best at Super Tour Apr 2017: 1:48.199 (Brandon Aleckson)FE race best at Super Tour Apr 2018: 1:47.040 (Brandon Chappell)FE race best at Super Tour Apr 2019: 1:50.132 (Jeff Read)FE qualifying best at Super Tour Apr 2017: 1:48.750 (Brandon Aleckson)FE qualifying best at Super Tour Apr 2018: 1:47.596 (John Yeatman)FE qualifying best at Super Tour Apr 2019: 1:49.749 (Jeff Read)FM race best at Super Tour Apr 2017: 1:46.271 (Mike Anderson)FM race best at Super Tour Apr 2018: 1:45.954 (Mike Anderson)FM race best at Super Tour Apr 2019: 1:49.409 (Mike Anderson)FM qualifying best at Super Tour Apr 2017: 1:45.956 (Mike Anderson)FM qualifying best at Super Tour Apr 2018: 1:46.323 (Mike Anderson)FM qualifying best at Super Tour Apr 2019: 1:49.608 (Mike Anderson)FB race best at Super Tour Apr 2017: 1:40.111 (Gary Hickman)FB race best at Super Tour Apr 2018: 1:38.870 (Gary Hickman)FB qualifying best at Super Tour Apr 2017: 1:42.272 (John LaBrie)FB qualifying best at Super Tour Apr 2018: 1:39.142 (Gary Hickman)Super Tour Apr 2017Super Tour Apr2017Super Tour Apr 2018Super Tour Apr2018Super Tour Apr 2019Super Tour Apr2019
FEFMFBsolid race · dashed qualifying · slower is lower
92%93%94%95%96%97%98%99%100%1 rule change between Super Tour Apr 2018 and Super Tour Apr 20191 ▾FE race best at Super Tour Apr 2017: 100.0% of FE's (Brandon Aleckson)FE race best at Super Tour Apr 2018: 100.0% of FE's (Brandon Chappell)FE race best at Super Tour Apr 2019: 100.0% of FE's (Jeff Read)FE qualifying best at Super Tour Apr 2017: 100.0% of FE's (Brandon Aleckson)FE qualifying best at Super Tour Apr 2018: 100.0% of FE's (John Yeatman)FE qualifying best at Super Tour Apr 2019: 100.0% of FE's (Jeff Read)FM race best at Super Tour Apr 2017: 98.2% of FE's (Mike Anderson)FM race best at Super Tour Apr 2018: 99.0% of FE's (Mike Anderson)FM race best at Super Tour Apr 2019: 99.3% of FE's (Mike Anderson)FM qualifying best at Super Tour Apr 2017: 97.4% of FE's (Mike Anderson)FM qualifying best at Super Tour Apr 2018: 98.8% of FE's (Mike Anderson)FM qualifying best at Super Tour Apr 2019: 99.9% of FE's (Mike Anderson)FB race best at Super Tour Apr 2017: 92.5% of FE's (Gary Hickman)FB race best at Super Tour Apr 2018: 92.4% of FE's (Gary Hickman)FB qualifying best at Super Tour Apr 2017: 94.0% of FE's (John LaBrie)FB qualifying best at Super Tour Apr 2018: 92.1% of FE's (Gary Hickman)Super Tour Apr 2017Super Tour Apr2017Super Tour Apr 2018Super Tour Apr2018Super Tour Apr 2019Super Tour Apr2019
FEFMFBsolid race · dashed qualifying · each class's best lap as a share of FE's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventFEFMFB
Qual best Race best Trap Qual best Race best Trap vs FE % of FE Qual best Race best Trap vs FE % of FE 
Super Tour Apr 2019 ST19APR262019-04-261:49.749Jeff Read · only car+2.153s (+2.00%)1:50.132Jeff Read · fastest of 2+3.092s (+2.89%)119.6Joe Reppert1:49.608Mike Anderson · fastest of 3 · top 3 within 5.6s+3.285s (+3.09%)1:49.409Mike Anderson · fastest of 3 · top 3 within 4.9s+3.455s (+3.26%)121.2Mike Anderson-0.723squal -0.141s99.3%qual 99.9%
1 rule change (FE: 1)1 tyres & wheels · FE Hoosier rain tyre part numbers updated: front 44195 W3, rear 44217 W3.showhide
  • FE Request to Update Hoosier Rain Tire Part Number for the FE cars #26235tyres & wheelstyres & wheelsFE Hoosier rain tyre part numbers updated: front 44195 W3, rear 44217 W3.
Super Tour Apr 2018 BUTTRA182018-04-271:47.596John Yeatman · fastest of 3 · top 3 within 13.1s-1.154s (-1.06%)1:47.040Brandon Chappell · fastest of 3 · top 3 within 11.2s-1.159s (-1.07%)1:46.323Mike Anderson · fastest of 9 · top 5 within 2.1s+0.367s (+0.35%)1:45.954Mike Anderson · fastest of 9 · top 5 within 3.3s-0.317s (-0.30%)-1.086squal -1.273s99.0%qual 98.8%1:39.142Gary Hickman · fastest of 2-3.130s (-3.06%)1:38.870Gary Hickman · fastest of 2-1.241s (-1.24%)-8.170squal -8.454s92.4%qual 92.1%
No rule changes on record between these events
Super Tour Apr 2017 BUTTRA172017-04-281:48.750Brandon Aleckson · fastest of 21:48.199Brandon Aleckson · fastest of 21:45.956Mike Anderson · fastest of 8 · top 5 within 2.0s1:46.271Mike Anderson · fastest of 10 · top 5 within 2.1s-1.928squal -2.794s98.2%qual 97.4%1:42.272John LaBrie · fastest of 21:40.111Gary Hickman · fastest of 2-8.088squal -6.478s92.5%qual 94.0%
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 FE" is the class's best as a share of FE'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 FE'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.