Back spacing is going to make all the difference. I'm running 245/45/17 on 8" rims with 5.25" BS. Backs are fine of course but I'm running about a 3/8" spacer in the front( makes the BS about 4 7/8" or so) and I still get rub on the inside of the back of the tire on the subframe with the wheels cut hard over. I'll live with it. I just don't do that. Mines 69 so different shape openings from 7 or 8.