Buttonwillow Raceway Park (Config #13)
Config #13 CW · 4459 m · 17 corners · reference lap 1:40.25 (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 2: 84.4 → 59.2 km/h over 78.0 m. Brake-point consistency here is worth more than anywhere else on the lap.
Commitment corner
Club Corner (T8): reference minimum 187.6 km/h. Fast corners punish hesitation — min-speed spread here is the classic amateur time leak.
Slowest corner
Turn 2: 59.2 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 | Sunrise | 140.2 | 116.9 | 159.2 | 108.0 |
| T2 | 84.4 | 59.2 | 61.1 | 78.0 | |
| T3 | Off Ramp | 59.2 | 59.2 | 148.6 | 15.0 |
| T4 | 142.9 | 120.2 | 125.6 | 72.0 | |
| T5 | Cotton Corners | 114.4 | 95.0 | 118.6 | 18.0 |
| T6 | 130.4 | 115.2 | 120.7 | 3.0 | |
| T7 | Grapevine | 120.2 | 120.2 | 164.4 | 30.0 |
| T8 | Club Corner | 187.6 | 187.6 | 188.1 | 0.0 |
| T9 | 171.9 | 164.6 | 170.2 | 54.0 | |
| T10 | Bus Stop | 170.2 | 157.7 | 167.5 | 30.0 |
| T11 | Truck Stop | 177.7 | 160.7 | 160.4 | 21.0 |
| T12 | Riverside | 160.9 | 156.6 | 167.6 | 6.0 |
| T13 | 187.9 | 178.1 | 181.6 | 18.0 | |
| T14 | Lost Hill | 167.3 | 152.3 | 166.1 | 42.0 |
| T16 | Sweeper | 121.4 | 100.2 | 133.4 | 111.0 |
| T17 | Esses | 133.4 | 133.4 | 155.8 | 0.0 |
| T19 | Sunset | 132.4 | 112.6 | 150.6 | 129.0 |
The browser engine re-solves only the speed profile on this fixed line for the selected bike class.
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