I got a sidewall bubble in my front right tire. I called Michellin on it & they sent me to a authorized dealer. I have an appointment next week for him to take the tire off & for the dealer to inspect it. I was told if it a defect they will replace the tire, if it is due to road hazzard they will pro-rate the tire for me. only thing is once the tire is off he will not put the damaged tire backon, he will only replace it. Since the car is a daily driver I gotta take care of it, sibce we got no spare. I will kepp you guys posted on how I make out. Hopefully I won't have to lay out the full amount.