Matt..........you should be just fine(this is 2k2GT, Tony Bolton). I run the Cobra R's with a wider than normal 275/40 and it all works good. I run spacers on the wheels(about 30mm)just to try and get the widest track possible.
If you rub anything, it would be the front swaybar or part of the upper fender lining. Nothing really harmfull.
FWIW, I actually run 17x9.5's in the front and they barely rub.
that is my goal, I want to finish this season in OSR I guess and move to SM next year.... Gotta find me some good rubber BTW Mastercraft tires suck on the AutoX