Michelin LTX M/S after the recommendation by my parents (they've had them on all their trucks/suvs since their 95 Suburuban). Got them within a week of having the truck. The narrow Americrap tires sucked and looked horrible on the truck. Needed some wider, white letter tires. Love them overall, they look good, ride quiet, and they're tough enough to hold up to my occasional trips out into the boonies. My parents' 03 Yukon had 60k on the tires when they got rid of it and they had at least half the tread left.