Buttonwillow Raceway Park (The Circuit)
The Circuit · 4171 m · 11 corners · reference lap 1:48.04 (supersport 600, simulation estimate)
The reference below is a minimum-lap-time motorcycle line solved on this circuit's verified bike layout and measured track width, with speeds from a quasi-steady-state motorcycle model. It is a ceiling under ideal assumptions — use it to see where your headroom lives, then drop your own session file to measure yours.
Three places to look first
Biggest braking event
Turn 1: 129.9 → 89.1 km/h over 126.0 m. Brake-point consistency here is worth more than anywhere else on the lap.
Commitment corner
Turn 10: reference minimum 121.8 km/h. Fast corners punish hesitation — min-speed spread here is the classic amateur time leak.
Slowest corner
Turn 8B: 44.4 km/h minimum. Exit drive from here sets the following straight — spread on the exit costs the whole next sector.
| Corner | Name | Entry | Min | Exit | Brake, m |
|---|---|---|---|---|---|
| T1 | 129.9 | 89.1 | 148.9 | 126.0 | |
| T2 | 107.2 | 89.7 | 119.0 | 87.0 | |
| T3 | 99.5 | 74.1 | 141.5 | 33.0 | |
| T4 | 136.7 | 119.3 | 158.3 | 33.0 | |
| T5 | 123.9 | 103.1 | 142.9 | 120.0 | |
| T6 | 87.7 | 58.2 | 131.8 | 72.0 | |
| T7 | 105.0 | 83.6 | 128.7 | 129.0 | |
| T8A | 107.5 | 79.4 | 79.1 | 96.0 | |
| T8B | 79.1 | 44.4 | 116.9 | 18.0 | |
| T9 | 132.8 | 98.0 | 136.5 | 84.0 | |
| T10 | 145.5 | 121.8 | 166.3 | 12.0 |
The browser engine re-solves only the speed profile on this fixed line for the selected bike class.
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