Apparently everyone has overlooked Tirerack and Continentals websites where warranties are discussed. The All season performance tires, though not Z rated, are great tires, and will give the XFire more versatility than the Michelins and will still handle phenomenally well at high speeds, rain or shine. The ContiTouringContact's which come as an optional tire, also have a 60,000 tread life warranty therefore there should be no need to pay for replacements at 15 - 20K.

See this link, for tire specs applicable to this warranty.
https://www.crossfireforum.org/forum...pic.php?t=2153