Ken....a local guy here had this happen to him at about 65 mph. Says he didn't run over anything that he knows of. Firestone sz50 firehawks 20,000 kilometers on them. Any ideas why this would happen ?
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Wow! Man would I be p*ssed off if that happened to me
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Wow.
Never seen anything like that happen on anything except a re-tread.
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I had the same kind of thing happen. I either had a puncture/leak or my valve stem went bad.... I don't remember the cause ...but same deal.... rim just sliced the tire like a cookie cutter....
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total belt edge seperation of the casing construction, Ralph. This problem is rare on a speed rated tire, however, it usually stems from running underinflated and overheating the casing .... if you inspect the inner linner, and see what appears to be bubbles, or raised "wrinkles" in the inner linner, thats a classic clue that the tire had been run underinflated. Underinflation generates tremendous heat throughout the tire body.... it attacks the weakest points first, which are the sections of the tire that are held together by gum rubber/base stock. The sidewall gave right below the belt edge... allowing the entire belt package and tread section to remain intact and come off in a unit. This also indicates he might have traveled on the tire for ways before stopping....completing the dislodging process....like a chain..."the weakest link". if i had a chance to examine this tire, i could tell if it was a manufactures defect, or a tire thats been run underinflated and "abused", if you will..... if your buddy had taken good care of the tire, then I say go to a bridgestone firestone dealer with the tire and show it to them, also..you may have him go to www.nhtsa.gov and fill out a failure report on it... this is how they and we track trends and see warrants for investigations.....
Joe, retreads are a funny story..they get blammed for a lot of stuff thats not a retreads fault. If you see a strip of "tread rubber" on the road... look to see if there is steel or other parts of the tires "body" or casing adheared to it.. if there is...then its a casing failure, not a retread failure. Doesnt matter wheather its a retread or new tire, if the casing fails, its a casing failure. Now, a 'band' of tread rubber peeled from a tire, thats different, thats a failure of a pre-cured retread, the tread pattern is already cured into the rubber before its placed on the buffed worn tire and cured... (the tread is precured and then bonded to the tire, its the most sucessfull type of retreading today.....). a failure of a moldcure retread is much more difficult to tell, for the worn tire is wound with "raw" uncured rubber, placed into a mold (much like a cookie mold) and baked and that bonds the rubber to the tire and puts the tread patten on it..... when those retreads fail, its usually the whole tire that comes apart..
here is a site that you may find interesting, the executive director of TRIB is a good friend of mine, Harvey Broadsky.......
check it out: http://www.retread.org
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