I have the Bridgestone Dueler Revos (All-Terrain) and they have been great so far. Also check out the BFG AT KO's. As far as keeping the stock size on the truck with a lift, check out my pics in the "Daystar Lift pics" in the Pictures forum. Those are the stock OR size tires and I think they look fine. The next size up would be the equivalent of 33 inch tires, which would only be about an inch wider in diameter. Any bigger, and you would need to start trimming your fenders and/or get a body lift.