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Thread: Aged Tires: A Driving Hazard?

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  1. #1
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    Aged Tires: A Driving Hazard?

    Aged Tires: A Driving Hazard?
    ABC News went undercover and found retailers selling aged tires as brand new.
    11/02/2009

    http://abcnews.go.com/Video/playerIndex?id=4826897
    JEEPERS DO IT DIRTIER

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    This is not a new issue - but I think it is an important one
    For years I have followed the practice "strongly recommended" by the British tire makers:
    - do not use a "new" tire that is over 6 years from date of manufacture
    - do not use a tire that is over 10 years from date of manufacture
    ( difference: the force exerted on a tire that has been used - helps to push the oils from inside the rubber to the surface )

    In the Jeep world, this issue might come into play most frequently for those who do not rotate all 5 tires regularly
    ( that "new" tire on the back is the danger )

    I always check the manufacture date before buying a tire
    and was glad to see Mayheminc provide this information when he was selling a set a while ago
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    Quote Originally Posted by 97xjsteve View Post
    was glad to see Mayheminc provide this information when he was selling a set a while ago
    yup those tires r on my jeep now and i havent had a problem with them yet

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    The ford issue was leaky aluminum rims, tires losing air, then underinflated at highway speeds to create heat due to internal friction.

    Problem with old tires is that the rubber has outgassing which will change the flexibility of the tire. As the tire hardens and you try to flex it, heat is produced which will become an issue. (not to mention the cracking)

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    When I bought my Iltis the guy I got it from had put brand new Michelin X tires on it- NOS from the military. A year later I came out of a Timmies and saw something on the tire- it looked as if someone had tried to slash it but being that it was 10 ply, it was still holding air. I was livid to think someone had tried to slash a tire on a vintage military truck so I took it to a tire shop to confirm. The guy there said that it was not a slash but was likely due to the age of the tire. Sure enough it was 10 years old and had dried out enough to develop a 2 inch split. I've seen several Iltis with these kinds of cracks and splits in their tires due to their age. Parts dealers are still selling these NOS tires since Michelin Xs are not made anymore in this size. I have since replaced them with new larger Hercules Trail digger tires and its been the best investment I have made in the truck to date. If anyone else out there has an Iltis make sure you keep a close eye on the tires if they are original!
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    will be checking from now on

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    The build date of the tire is stamped on one of the sidewalls. It will be the last 4 digits of the DOT number.

    One side will have 8 digits and the other side will have 12 digits. The date is the last 4 of the 12 digit code.

    Example: DOT FG4B B3LS 0409

    The build date is the 4th week of 2009. The other numbers/letters tell the build plant, and machine info.

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    I dont believe the problem with age. Firestone had new tires separate on the explorers, probably the same batch they tested.
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    Quote Originally Posted by bandit86 View Post
    I dont believe the problem with age. Firestone had new tires separate on the explorers, probably the same batch they tested.
    I believe the problem with age is that tires get hard and lose grip. The Firestone/Exploder issue was heat buildup - those are totally different.

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