| The street and the track are two different animals..... Tracks are smoother and stiff suspension (Springs and shocks) work well. The street has pot holes , huge dips and irregularities....
Having a stiff suspension on the street can upset the chassis
and cause loss of control or tire contact in corners. Tightening up the control arms and tension rods with bearing units works well for the track and street and offers crisper response.
Most coil-over set up springs are too stiff for the street. The first part of the suspension is your tires.
The more power you make the more critical your tires become and without good tires, all the power is useless. For your power level the only tire that is truly going to hold the power is a MT drag radial. These are OK around corners and amazing straight line. FUN!
If you really want the best handling you would need to lower the boost level a little and the NT05 is the best I have tested. I never run more than 28 PSI on the rear of a TT for traction and the front likes about 40 PSI to keep from rolling the tire over in hard cornering. I know that is not what has been said over the years, but with testing every different combination of pressure over the years since these cars were new, I have found this to be optimal.
The edges wear out first in front with lower than 40 PSI showing less than full contact. On the rear the center wears first running over 28 PSI showing less than full contact.
With 40 front and 28 rear the tires tend to wear even suggesting the most tire contact and that is how it feels as well.
I have been running these adjustments in my own cars and customers cars since the early 1990's with the best results. I have found NT05 tires hold about 400 RWHP as long as the rad is not too cold.
I have found that MT drag radials hold about 600 RWHP as long as the road is not too cold. hope that helps!
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