265/75-16 with little to no rubbing when wheeling.
285/75-16 some fit stock wheels and have a minimal space at the UCA, with more rubbing when wheeling. Some pounding is usually required.
Bigger sizes fit with wider wheels and less backspacing. They will rub more also requiring more pounding and trimming.
Body lifts help with reducing rubbing of tires bigger that the 265/75-16.
My Yokohama AT/S 265/75-16 rub at full stuff. In the front on the top of the inner fender and back of the wheel well. (the Yokos run big) In back I have ~1/2" before the tire touches the inner fender, no rubbing.