Spring Rate Calculator
Calculate suspension spring rates, natural frequency, wheel rates, and spring dimensions for optimal handling.
Vehicle Setup
Typically 0.7-1.0 for most suspensions
Current Spring Specs
Coil Dimensions (for rate calculation)
Required Spring Rate
404 lb/in
For 2.0 Hz frequency at 800 lbs corner weight
Current Setup Analysis
Wheel Rate326.9 lb/in
Current Frequency2.23 Hz
Ride CategoryPerformance
Spring Travel & Preload
Solid Height4.00"
Available Travel6.00"
Preload2.00" / 1000 lbs
Max Force (at solid)4000 lbs
Calculated from Dimensions
Calculated Rate349 lb/in
Spring Index7.00
Wahl Factor1.213
Max Shear Stress346 ksi
Frequency Guidelines
comfort: 1-1.5 HzSoft, comfortable ride
street: 1.5-2 HzBalanced comfort and handling
performance: 2-2.5 HzSporty, controlled handling
track: 2.5-3.5 HzStiff, race-oriented