FREE TOOL · SUSPENSION MATH
Coilover spring rate
From per-corner weight, target ride frequency and motion ratio, pick a spring rate that gives proper sag and avoids bottoming. Track-prep uses ~2.4 Hz; daily-driver ~1.4 Hz.
Reference frequencies
| Use case | Front Hz / Rear Hz |
|---|---|
| Luxury sedan | 1.1 / 1.2 |
| Sporty daily | 1.4 / 1.5 |
| Track-day setup | 1.8 / 2.0 |
| Time-attack race | 2.4 / 2.6 |
| F1 race car | 5+ / 5+ (mechanically uncoupled aero) |