are they 7 or 8 inches wide? u could fit a 12.5 wide tire, but would rub on full lock. id say 10 inch wide and adjust the steering stops a little. and i believe u could do a 31 inch tire and a 32 with a little trimming.
It's not your factory wheel's width that is the limiting factor, your wheel's limiting factor is its high amount of backspacing (5.25 to 5.5" depending on which wheel) that positions it very close to the suspension. For that reason plus your stock suspension height, the biggest tire you can successfully run without rubbing is a 31x10.50. Even a 31x10.50 can rub a tad when you turn the steering wheel all the way which is fixed with a washer on both steering stops as described at Jeep Steer Stop Adjustment
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My 31x10.50 rubbed until I did the washer trick to the steering stops. Took only one washer on each side. Never notice the difference. PO put custom rims on with little backspacing. Still use the washers on the steering stops even after the 2.75" lift.
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