From what I seen in Google volt patterns for a cj 5 is 5 x 5.5. Now as far as rim 8 inch should be fine with 11.5 wide tire I run a 31 x 10.5 on an 8 inch looks fine and I can hold a bead with 8 psi in the tire. As far as back spacing that would need to be figured out. How wide is the tire now...