Opinions on Suspension Techniques Springs

[Lt.Mike]

My suspension set-up on my 89 240sx are Koni Yellows with Eibach Pro's, and at this point I am pretty sick of the unpredicable progressive spring rates of the Eibach's. I am thinking of going to a linear spring and am considering ST Springs. What are your opinions on this type of spring?

[:: orion ::]

Call ST to be sure...but I believe the ST springs are linear in the front, but progressive in the rear.

Check out RSR race springs...maybe hard to come by, and will cost more...but are linear and STIFF.

- Brian

[Lt.Mike]

I did not know that ST's are progressive in the rear. I will go look into that. By the way, when any of you install springs, do any of you encounter vibrations at certain rpm loads? My Pro kits never came with insulating material and my old spring insulating material was disentegrated. If so, what can I do to solve this problem?