Mine only lasted about 25k miles on them, rode nice for about 5k miles then they just got plain awful on my 09 . They would flat spot in 90+ degree weather and wobble till warmed up. Last 10k miles they were loud and developed some feathering. Does good year give you a replacement since some of already replaced them cause they were crap? I don't have them anymore, are they checking s/n's off the truck? I replaced them with some general Eco grabbers and they've done rather well the last 10k miles, very quiet tires and handle rain very well. They don't like heavy snow though but that's a given with the tread they have.