When my CAAD 8 was new I rode approx. 500 miles when a spoke on the rear Maddox wheel snapped. Dealer replaced the spoke which snapped again a week later. Cannondale rep told dealer to replace entire wheel set with Mavic Aksiums both front and back and CD paid for it. About a year in on that wheelset, the rear rim cracked near a spoke nipple and Mavic warranted the rear wheel and replaced it free of charge.