snowcrane2005 said

I will get the actual alignment specs as I did not do it myself of of course. When i put competition springs and big rear tires it raised rear of car and i raised the front up to compensate so I'm sure this is all compounding the problem. Does anyone have any suggestions on good tires I can get that would be rated for that speed and would fit on stock Rims? And do you think this is much difference between a tall one from randy and the DC spoiler? I imagine the DC spoiler would work better since it is mounted to bumper. Also with the DC I should still probably look at lowering the car if I can at all correct? How high do you have your car off the ground from the bottom of the front spoiler?

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Mattax said

Egzactly. As you know when one looks at real road race cars, they all had their bodies as low as possible.
Same rake can help, but if air is getting underneath, thats a problem.
If the suspension has been raised, that's going to hurt geometries for stability as well as roll center heights.

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