I've put 2700 miles of Rocky Mountain single track and high desert on my front tire since I installed it in June '13 and it is finally time for a new one. The tire has taken a beating, never had a flat tube. Tire held up extremely well considering what it has been through - sharp rocks, many miles of high speed desert blasting, did acceptably in the loam. Finally the outer lugs are chunking off and the center lugs are worn down. I am definitely ordering another!