Will 31x10.5 bfg at k/o's fit on a stock x with no rubbing or fender damage without having to mess with the torsion bars. my last vehicle i stepped up from a 28 to a 30x9.5 and i ended up cutting the front tires with the fender lips if i bottomed out.

Yes, I'm running them on my truck right now (you might need to trim a bit of plastic on the plastic flare, takes 10 minutes). Call Discount tire and get the hazard protection. $14/tire. They'll replace your damaged BFG even if you're offroading.

They also have given members in our club $20/each for the Long Trails. Or you could just trade them for free mounting and balancing of your new tires.