It's time for new tires and wheels on my 1974 Blazer. It's not lifted, and won't be anytime soon, but I would like to get the biggest tires I can without rubbing or cutting. I live in Arizona, so mud is not a concern. I'll be driving mostly on gravel, rock, dust, and maybe some sand. I'm leaning toward ATs rather than MTs for better on-road performance. I see on the Technical page that only up to 31x10.5 tires will fit on a stock truck, but from reading these boards it sounds like people are able to get bigger tires in there. Should I try a bigger size and see if it works on my truck? How willing are tire shops to put on bigger tires and let you bring 'em back if they rub? Tires I'm considering are the BFG AT and the Yokohama Geolander +II. The Yokos are rated almost as well on tirerack.com, but cost 1/3 less than the BFGs. Any thoughts on these? Others I should look at? Wheel-wise, I'm planning to go with 15" steel white spokes, but I'm not sure what width to get. I suppose that will depend on tire size. Any thoughts?