15x10 with 5.5 of backspacing, 295/50/15 will fit fine with the only mod needed being rolling the inner fender lip. People have fit 295/65/15 M/T drag radials and say they fit fine, I believe them, I've got room to spare. My fronts are 165/65/15 on a 15x6 rally from summit. The rears are Vette rallys from summit and were cheap at about 65 bucks a piece. When I do it again, I'll go with the 295/65 MT dr's and a bit taller tire in the front.