The bolt pattern is 6X5.5. Factory offset is 5 1/8 but you can only get that offset in an aluminum rim and it will have to be custom made. I am running a 4.5" offset with 32" tires but had to make some metal modifications to get full articulation. I have seen beads blown with our crew three times and all were in a mudhole. Two were aired down, one wasn't. I haven't blown one yet but it is only a matter of time. If you have on-board air it shouldn't be much of an issue depending on the quality of the air system. One of the three beads I reset myself with my on-board air system. The others we just simply put on the spare on the trail. It doesn't justify my buying a truck and trailer to put beadlocks on my X yet though.