15x28x10.50 Mt sportsman pro's

If you have mini tubbed the car Centerline sells the autodrags in 15X9 with 7.25" backspacing and 15X10.5" with 7.25" backspacing. they will move the rim/tire in a good amount. My 275-60-15s are pretty close to the 1/4 panel with 4-7/8" backspacing also.