Rear end "float" on straight at lime rock

[Topless]

Originally Posted by jakell2010

The nose does have a chin spoiler,,,I didn't think of that,,,but I would think that if that were the source, then the faster it went the more unstable it would become?,',.

Topless,,,,,how did you diagnose the front motor mount?

I discovered a small coolant leak from my water pump which was still original w/95k miles. Better safe than sorry I had it changed along with a low temp T-stat. While in there you can see the motor mount was torn w/30k miles on it. Out it came. The car does shift better now and is solid again under heavy braking.

Aero is a little tricky because it is difficult to test unless you know someone at JPL. The general rule is to match front and rear to maintain balance but I don't know how much difference a GT3 nose with chin spoiler would make. You are right that aero imbalance should get worse as speeds increase.

I'm not familiar with that model of Nitto tire. If you mean these: http://www.nittotire.com/Tire/nt555 They are pretty good. Run them 36psi Hot f&R for good results. I have a set of NT-05s on my street wheels now and like em.

With 80K on your original struts they are almost certainly gone. My brother had 65K when his car got a case of the wallows. When we pulled the struts and removed the springs there was only dampening left on one rear. The rest were toast. A fresh set of ROW M030 struts & sways would be around $1800 installed and aligned and give you 95% of the benefits of running PSS9s.