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F1 tyre compound constants, degradation model formulation, undercut logic, and pit-lane loss per circuit. Load when working on pit strategy, tyre deg, or undercut models.
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| name | f1-tyre-model |
| description | F1 tyre compound constants, degradation model formulation, undercut logic, and pit-lane loss per circuit. Load when working on pit strategy, tyre deg, or undercut models. |
| when_to_use | When building or modifying f1_predict_pit_strategy, tyre degradation fits, or undercut calculations. |
| Compound | base_lap_delta_s | degradation_rate | safe_window_laps | crossover_lap |
|---|---|---|---|---|
| SOFT | -0.8 | 0.08 | 15 | 12 |
| MEDIUM | 0.0 | 0.05 | 25 | 20 |
| HARD | +0.6 | 0.03 | 40 | 35 |
| INTER | +3.0 | 0.10 | 20 | 15 |
| WET | +6.0 | 0.12 | 15 | 10 |
base_lap_delta_s: seconds vs MEDIUM reference. Negative = faster.
Default: 22s. Circuit-specific tuning is a Phase 3.1 follow-up.
Linear polyfit: lap_time = intercept + slope × tyre_age
Outlier filter: drop laps > mean + 2σ (SC laps, in/out laps).
Min 2 valid samples required; returns slope=0 if insufficient data.
net_gain_per_lap = fresh_tyre_delta_s − (attacker_pace − target_pace)
laps_to_clear = ceil((gap_to_target + pit_loss) / net_gain_per_lap)
Viable if laps_to_clear ≤ 10. Marginal if 5 < laps_to_clear ≤ 10.
