315/25/19 on a 997 tt... do or don't?????
 

Has anyone tried running 315/25/19 tires on a 997 turbo???? I did the conversion to inches and it seems its about an inch lower than the 305/30/19. Will this throw off the awd system???? Someone told me it might make the car go into some sort of fault or limp mode. Any input?????:confused: