Ok, How about the
Toyo T1r? From what I've been hearing about these, they are a notch better than the T1s Toyo had b/c the sidewalls are more stiff. That's all I can really think of. Are you going to tell us what kind of car it is? I'm guessing Miata based on what you've posted. Possibly a S2k, too. Both can fit those specs.