Just the other night a friend was over with his 03 and both cars had the tires and rims off. He has 17x9s with Nitto 315's and I have 17x10.5s with GSD3 285s. Next to each other, they were the same width. The GSd3 is a pretty wide tire so I'd say 285 on a 17x9 rim would be as wide as you'd want...