Unless you are rich like most of the members here why not use common sense ? You should check your tires at least once a week on daily driver If you see dry rotting or cracking time to say adios> simply don't buy that all older tires are bad, In recent years I have had more with new tires coming apart then old in fleet vehicles. Myself I have had tires come apart on my cars when less then 6 month's old. I got the run around back in day that they spun on rim etc. Now I'kll just say the word law suit and I get them exchanged But why ?Check your tires and don't run the silver state challenge on 15 year old tires !