I had a flat tire on my pick up & took it in to have it repaired where I bought them because they had free flat repair. They pulled it in the shop to fix it & came in to the waiting lounge & told me all my tires were getting wore right down to the point if needing replaced. I said that I didnt have that many miles on them & that I thought they had a 60,000 mile warranty. I got the original reciept out of the glove box & showed them that they only had 36,000 miles on them & they should be pro rated. They said they were over 4 years old & that the mileage warranty no longer applied. Well I read my reciept front to back & it doesn't say anything about years old only miles. They told my it is a nation wide tire manufacture warrany that will not let them warranty anything older that four years. Any body ever heard of this???? I didn't mention where I bought these as that is not the issue as I have looked on several tire manufacture web sites & yes they do state that tires over a certain age have no warranty regardless of miles. I only drive several thousand miles a year so mileage warranty is pretty well useless to me. Gerald