I bought these tires 27 months ago because the OEM Michelins were worn out after 15,000 miles, not unusual for the E350. These were rated 40,000 or so I thought. I have had them rotated twice per year or about every 3500 miles. The wear is not even so there is little point in trying to make a claim. I have always preferred Michelins but I am going to switch to Conti.