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BoP Lab / Buttonwillow Raceway Park

F6 vs SRF vs P1 pace at Buttonwillow Raceway Park

Class · click a class to switch, + to compare alongside (up to 4)
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
Track configuration

Quickest here: SRF 1:44.060 Vince Balch, Super Tour Apr 2017 qualifying · P1 1:34.975 Jim Devenport, Super Tour Feb 2020 qualifying

1:351:401:451:501:552:006 rule changes between Super Tour Apr 2018 and Super Tour Apr 20196 ▾16 rule changes between Super Tour Apr 2019 and Super Tour Feb 202016 ▾SRF race best at Super Tour Apr 2017: 2:01.122 (Mike Miserendino)SRF qualifying best at Super Tour Apr 2017: 1:44.060 (Vince Balch)P1 race best at Super Tour Apr 2017: 1:37.427 (Parker Nicklin)P1 race best at Super Tour Apr 2018: 1:37.111 (Chip Romer)P1 race best at Super Tour Apr 2019: 1:38.856 (Jim Devenport)P1 race best at Super Tour Feb 2020: 1:36.224 (Jim Devenport)P1 qualifying best at Super Tour Apr 2017: 1:36.320 (Jim Devenport)P1 qualifying best at Super Tour Apr 2018: 1:38.997 (Chip Romer)P1 qualifying best at Super Tour Apr 2019: 1:37.658 (Jim Devenport)P1 qualifying best at Super Tour Feb 2020: 1:34.975 (Jim Devenport)Super Tour Apr 20172017Super Tour Apr 20182018Super Tour Apr 20192019Super Tour Feb 20202020
F6SRFP1solid race · dashed qualifying · slower is lower
EventF6SRFP1
Qual bestRace bestTrapQual bestRace bestTrapvs F6Qual bestRace bestTrapvs F6
Super Tour Feb 2020 ST20FEB212020-02-211:34.975Jim Devenport · fastest of 4 · top 4 within 7.1s-2.683s (-2.75%)1:36.224Jim Devenport · fastest of 4 · top 4 within 5.9s-2.632s (-2.66%)148.8Johnnie Crean+15.3 mph (+11.5%)
16 rule changes (SRF: 5, P1: 11)3 weight · 2 engine · 2 induction · 2 tyres & wheels · 1 removed · 1 suspension & brakes · 1 wording · 4 othershowhide
  • P1 Extend date for removing sealed DP02-spec 2.0L option #28046weight
  • P1 Remove sealed DP02-spec 2.0 MZR spec #26753induction
  • P1 Update Revised Spec Line F #27745weight
  • SRF SRF Rain / Brake Rule - BoD approved as follows #34958suspension & brakes
  • SRF SRF Tire Warmer Rule #27622tyres & wheels
  • SRF SRF / SRF3 Nose Weight Reduction #27706weight
  • SRF SRF / SRF3 Majors & Regional Class Updates #27723other
  • P1 E&O Transmissions #27098other
  • P1 E&O Transmissions #27005tyres & wheels
  • P1 Move minimum height provision to #27031removed
  • P1 Remove duplicative fender louver provision #27033induction
  • SRF SRF Dash Windscreen Kit #27028other
  • P1 Missing word E&O #26919other
  • P1 E&O correction to GCR 9.1.8.C.C. #26927wording
  • P1 Clean up reference to engine table #26648engine
  • P1 Remove redundant spec line #26692engine
Super Tour Apr 2019 ST19APR262019-04-261:37.658Jim Devenport · fastest of 3 · top 3 within 8.6s-1.339s (-1.35%)1:38.856Jim Devenport · fastest of 3 · top 3 within 4.2s+1.745s (+1.80%)133.5Jeffrey Lederman
6 rule changes (P1: 6)3 engine · 2 induction · 1 wordingshowhide
  • P1 Clean Up Engine Table Language #26590engine
  • P1 Move single-seat closed cockpit provision to #26376wording
  • P1 Correct errors in GCR section 9.1.8.C.J #26144engine
  • P1 Remove redundant inlet restrictor provisions #25877induction
  • P1 Clarify Honda K20A-FD2 parts requirement #25949engine
  • P1 Correct GCR section 9.1.8.C.J errors #25966induction
Super Tour Apr 2018 BUTTRA182018-04-271:38.997Chip Romer · fastest of 6 · top 5 within 7.8s+2.677s (+2.78%)1:37.111Chip Romer · fastest of 6 · top 5 within 13.4s-0.316s (-0.32%)
No rule changes on record between these events
Super Tour Apr 2017 BUTTRA172017-04-281:44.060Vince Balch · fastest of 8 · top 5 within 18.6s2:01.122Mike Miserendino · fastest of 7 · top 5 within 1.8s1:36.320Jim Devenport · fastest of 5 · top 5 within 6.9s1:37.427Parker Nicklin · fastest of 5 · top 5 within 6.2s

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. 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.