I am pretty sure that stock tire sizes from porsche are: 235/35/18F and 295/30/18, now correct me if I am wrong, but my car has 225's on the front, is this normal?? BTW they are Conti's not Zero's.
Thanks,
Evan
BTW-Got my bumper plugs, and clear sides, looking good, will post pics somtime soon.

 

You have the right size fronts. We call them skinnies

You can put 235s and match them with 315s a la GT2.

You're not missing much by not having P Zeros. They are by far my least favorite tire. Old old technology/tread pattern. Noisy as hell. Last no time at all. Poor grip compared to the competition and...