Well, originally it was max 32s, but that was when i planned on a 4in terraflex long arm. Seems like 35s are standard with a 6 in lift, but it seems a bit much to me. Ill probably stick with 32s and see how they work out, considering i already bought them anyways. The reason for the change in kits and heights is just convenience. The terra flex kit, new was 2200, i bought this kit off a guy on craigslist. The seller was really the tri link rear, and the bolt on application because I plan on installing it myself. And it was cheaper, at only 1700 for the complete kit. The story goes, it was only run twice, and dude had to sell the jeep, buyer didnt want the lift, so left it behind for seller to sell. The parts are in great condition, and barely look run at all.