My brother has been running 31" MTR on his ZJ they wore down to 60-50% pretty fast, so I agree with not putting them on heavy vehicles, he recently put them on his XJ, when they wear out hes going for 33" on the XJ. I run 29.5" Bfg AT and they are AWESOME tires, I run 90% on the road and try to go to moab at least ONCE a year.
I would like to get to the point where I can throw 32" 33" on and go about 6 times a year, right now being unemploed cant do jack!
With the intention of going to Moab alot, I am going to try to get a set of black rock crawler ar767's with at least some 33" tires, havent decided yet but Im leaning on MT'R or KM, or hell SSR if I get a deal like Tracy has. Problem is always money
Pick what you think look good for sure, MT/R KM or Trxus or hell SX they are all good, but if your going to ride the street alot on the Rig and its under 4-5K go with MT/R if its a heavier rig get the KM's they seem to last a tad longer, dont count out the BFG AT's either on a light rig like mine you can get 50k + easy out of them. They do wheel VERY well. I smakced the sidewall pretty hard and its taken a small chunk out of them but nothing that's a worry. Oh and my AT's are KO version with the rim protector.