I have a 2008 Grand Prix and want to go with the Pontiac stock 2008 GXP rims. According to the factory specs the front are 18 X 8 255/45-18 and the rear are 18 X 7 225/50-18. I would like to go with the same wheel and tire combo all around so I am wondering which size you would recommend and if there's an advantage/disadvantage one way or the other.
Thanks very much!
Beekas