Quote Originally Posted by spytech View Post
Yeah I had to use a clamp on the sleeve and a lot of elbow grease (while pinching the spring at the same time) to get that last turn out of the collar on the pass rear coil.

Longer rear shocks, is that the answer? A slightly shorter spring at a slightly heavier rate?
Unless your shock is bottomed(extended all the way, or nearly all the way) then this wouldn't be a factor in adjusting your rear ride height.

You should go to a heavier spring that is the SAME length. This will mean that with the collars in the same position, the vehicle will ride higher because the "rate" (lbs per inch of compression) is higher. Conversely, the spring will compress less to give the same height distance at the frame, and you should be able to make your adjustments without using a spring compressor.

As witnessed on the FFR PDG GTM, the higher rear spring rate may also be beneficial to the GTMs performance. Just don't go too much or the ride will get rough. For fine tuning I usually change by no more than 50 lbs in spring rating, but it really depends upon the situation and the lever ratio of the suspension system.

Probably the best thing to do is to let Ted and Ron figure out what they think works best on a street GTM and use them for a "benchmark".