Effective spring rate


Got curious about this today so I looked up some #'s.

Front springs 315lbs/in
Rear springs 575lbs/in

Spring rate factors at wheel based the geometry of the suspension
Front spring rate factor .88
Rear spring rate factor .45

Front effective spring rate 277lbs/in
Rear effective spring rate 259lbs/in


Scott, if I remember correctly, the wheel rate is the square of the motion ratio times the spring rate. And don’t forget to factor in the sway bar rate.