THEY LAST FOREVER
Had a set on my 2500HD for 65,000 miles. when i replaced them they still had 6/32" tread left on them. Only thing i didn't like about them is as they get older, the rubber gets real hard which makes them very slick in the rain. I think it's also what makes them last so long(the hardness) But that's the only thing that kept me from buying another set.