Had a cracking and wear issue on one of the front A/S. It was on the both edges were the tread met the side wall. This tire was older (about a year) than the other 3 which were on the car when I purchased it. I called michelin and complained. They sent me to a local dealer who gave me a $60 credit towards a new tire. The tire had 9/10 tread remaining. It was obviously a manufacturing defect.