You are indeed right lol when I googled it I must’ve looked at the wrong answer well back to searching for tires and wheels lol thank you everyone !!

I'm running P255/70R16 109T tires on my XJ with a 3 inch lift. This tire size I should just over 30 inch tire. This is the largest tire I could fit in the stock location, without modifying the rear seat.

I believe in my profile page, there is a link to my build.