Ya without gears available I think 33"s might be our max a little bigger if you don't need to drive it 40 miles to work and back everyday.
Just to clarify on my previous posts about these fitting. My impression of the OP was he's willing to go at his XK with saw an trim all the crap off of it. These tires in no way will fit if your keeping your wheel wells not addressing the heat lines and such. The only way these tires will fit a 2" lift is with a insane amount of cutting things up. There's a thread on the other forum where there all saying this is insane but there all keeping there XK stock just adding lifts. A lift isn't enough with this size but chopping the front bumper and probably needing to just get rid of the wheel well and doing the pinch weld mod they should fit. But by that analogy any tire size will fit just depends on how much of your Jeep your willing to cut away