According to ICON, the UCAs require a maximum of a 5" backspace to clear a 12.50" wide tire. To clear the UCAs with a 5.71" backspace, you'd probably need to stick with an 11.5" or 295 wide tire at a maximum, and a 295/65R18 or 295/55R20 would be good tire choices for this kit to avoid any amount of rubbing or UCA clearance problems.