i have 225x60R15 on the front. 15x6 Cragar SS wheel, key is the backspacing, mine on the front is about 3 3/8" i had the adjust the front of the fender gusset-to-bumper bracket to clear as much as i can, it gets close when I'm in reverse, and the front end is in a dip with the wheel turned where the corner almost hits.