Not trying to disagree with anyone here and there are some valid points here. As I stated previously, I do believe a 10-10.5" wide is a better selection. However, the LT tire topic is an interesting one. I've owned several RZR's, Ranger, ATV's, and have plenty of tire experience on them. I have never tried an LT tire on any of these machines, but have also read some very positive reviews from serious riders that did run them (on SxS's). If you search you'll find some reviews on other forums. Yes it will have a thicker bead and stiffer sidewall. Likely also heavier (although in some cases, not much at all). But it will also have some durability and tread life benefits. IF I was to ever try a LT tire, it would be on the KRX as it is one of the physically biggest and heaviest machines out there and probably as good a candidate as any. Due to the stiffer sidewalls, the tires can also be run at very low PSI.
Question for those of you that already have the KRX and have changed your tires on them yourself: do the beadlock bolts look long enough to handle a thicker bead? If not I'm guessing a trip to the hardware store would solve that.