265/75-16 in an AT or "less" aggresive MT will fit (just) with maybe minor rubbing on front wheel arch liners. The STT's have a VERY large tread depth, just fitted 265/75 -16 STT's to mine, but its lifted 2" and they are CLOSE.....don't hit but aint a lot there with the factory bumper on, I had to trim the wheel arch liners down a little to. If you have factory side steps with mudflaps built in, then they would probably rub to.

235/85-16 is defender size, and is bigger than 265/75-16 so not likely to fit easliy without a lift

a Bigger size than standard would be 265/70-16 in an AT, or 245/75/16 in AT or MT and thats a nice size, looks balanced on a D2 without a lift.

thanks for the speedy reply. ive seen your website before, its helped me alot. I do have the factory side steps and mud flaps, is it possoble to remove them to improve ground clearance? Maybe the Stt's where a bit much for me atm. I think the discoverer ST's instead of the STT's should be fine. They do the ST in a 235/70/16. I would go for BfG A.T but.. ive heard bad things when it comes to the muddy stuff. Do you think the Discoverer st will be ok for all around 4 wheeling?