I originaly posted this in the susp forum...but it seems as the FD guys there dont want to be bothered with my questions...so here goes...

Mazdatrix has a little chart on their site that I'm sure many of you have seen already. It states that stock FC spring rate is about 95F and 90R. But the Eibach ProKit is 70/185F and 90/165R.

Two Questions: What are the implications of having a softer initial rate up front with the Eibach. Ands econd, the 95F, 90R stock rates suggest that stock springs are linear? Is that right?

Here is the info from the Mazdatrix chart:

FRONT
Manufacturer Rate
Stock 95
Racing Beat 130
Suspension Techniques 120
Eibach 70/185
REAR
Manufacturer Rate
Stock 90
Racing Beat 80
Suspension Techniques 120
Eibach (non-Turbo) 85/165
Eibach (Turbo) 90/165