I know the actual tire size varies with manufacturers as well, so it may end up with a bit smaller tire. I sold the 99 GT that had the 18X10 wheels with 285 tires so I need to either measure off of the 17" wheels I have or snag another set to measure off of. With the 4-link system I am running the lower control arm is going to be the tight spot. Maybe down the road I will look into moving the arm to the inside of the frame rail to maximize the new tubs, but for now I am leaving well enough alone