My 2010 Z has stiff suspension after a hard day of hitting the twisties my rear tire has like orange peel. You know how a track tire peels thats what my street tire is doing but lightly. I thought it was normal just aggressive riding. I had some guy tell me this not normal a street tire should not do this he said something is wrong with rear shock. I'm thinking WTF is this guy for real I have not been to the track yet. I'm running about 40psi in the rear tire.