sure. couple of tire companies make a 285/40/17. in most cases you shouldnt have any trouble running a 275 or a 285 rear tire. the only thing you could run into is rubbing against your tailpipes, and those can be re-adjusted. some guys even run a 315/35/17 rear and dont have to make any changes. if your car isnt lowered, you can probably run a 275 front. i have 255/45/17s on my front 17x9 wheels and thats as wide as i want to go. im dropped with sportline springs and if i run any wider, i will rub.