Originally posted by NinosAutoAccesories
They are a full progressive rate spring. So they dont have a spring rate.
Since when do progressive springs not have a spring rate? I have progressive springs on the rear of my Mustang, and I know for a fact that the spring rate is 390-430#/in. A progressive spring has some rate at the beginning of the compression and progressively builds up to something higher. In this case, you say the Perrin springs are 15-50% firmer than stock, hence there is a spring rate, it just needs to be calculated (assuming, of course, that someone knows the rate of the stock springs, which are probably also progressive).
But I digress....
Nino - Any sign of Noltec street front caster/camber plates? I will buy them right now if you say you have them in stock.
'97 Legacy 2.5GT sedan