I'm running a 36X13.5 on a 16" rim. Was on an XJ with 9" of and full size axles. Mine are Bias Plys. They come in both radial and bias. The radial ride much better but are more money. I don't see much street action so I went with the bias. For balancing I used stainless steel BB's from Walmart. A pack of BBs and a small weigh scale cost me under $20. I think I used either 6 or 9 ozs per tire. You just break the bead then dump them in there and air it back up.
I have mine on an 8" rim, did this so I could air down more and not lose the bead. BTW these tire are extremly tough. I hit a 2 foot boulder at about 50km/h. The rim , lower control arm and the mount for that control arm was shoved back up into the body and destroyedl. Tire was fine.
Mine have been wearing fine. My rear end is spooled(welded) and I have no unusal wear or feathering. The first thing you will notice when you get them is that the tread depth is very shallow. You would think they were half worn. But, thats the way they are and they still work great. They are an awesome all round tire, work great in snow/ice, rock and mud. I think because of the shallow tread they tend to float on top rather than dig in and down.
They are a fairly soft tread and mine took a beating rock crawling in Moab. For here they are a great all round tire but I wouldn't use them on an exclusive off road crawler.
You say you are worried about rubbing but didn't say what your rig is or how much lift you have.