Coilover Preload Calculator

Calculate coilover spring preload and its effect on ride height, available travel, and corner weight.

Input Parameters

Results

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Preload Distance
in
--
Preload Force
lbs
--
Static Deflection from Preload
in
--
Ride Height Change vs 0 Preload
in
Note: Preload raises ride height but does not change the effective spring rate or wheel rate. Excessive preload reduces droop travel. Typical preload: 0.25-1.0 inches.

Reference

Preload Distance = Free Length - Installed Length Preload Force = Preload Distance x Spring Rate Static Deflection = (Corner Weight - Preload) / Rate Ride Height Change = No-Preload Deflect - With-Preload Deflect Preload does NOT change spring rate or wheel rate