Got 47k out of OE Dunlops with only 2 rotations(not recommending this schedule, it just happened that way), and just replaced with Kumho 712 Supra's. The tires actually wore very evenly despite my bad rotation schedule, and i probably could have gone another 5k on them, but I'm on the road constantly(45-50k miles/year) and didn't need any tire problems. As long as you are running correct tire pressure, have a good alignment, and are rotating regularly, oh, and not driving like M. Schumaker, you should be fine.