I was able to fit a stock Rubicon tire and wheel (255/75/17 MT) under mine after a little moddification to the hitch.

Stock - notice the four bolts that stick out along with the back of the receiver.



Some guys just trim all this down. I decided to chop off the nuts that are welded on and grind the receiver down flush with the welds. Then use carriage bolts and stuck them through from the inside out so the nuts are on the outside. This provided a nice smooth flat surface on the inside that took up minimal room.





The great thing is that the rear 4xGuard still fits perfectly with the tire in place!



And there isn't gobs of room between the tire and the track bar, but it fits.