DOT Date Code - Motorcycle Tires

Discussion in 'Technical & Maintenance' started by fortech, May 10, 2019.

  1. fortech

    fortech Active Member

    Sooo... does anyone pay attention to this?

    I have a Mitas E07 that was manufactured in the 23 week of 2013. The tire is now a little over 6 years old. That seems to be the magic number if you google anything about the DOT code and motorcycle tires.

    I put about 5-6000 kms on the tire in 2016 but swapped it out for a new Mitas E07 in June 2017 prior to us RTR folk heading to Pizzaman’s place in Maine. The tire installed in June 2017 is nearing its end of life so I figured I would install my half worn tire from 2016 and put another 4-6000 kms on it before tossing it. The DOT code didn’t even come to mind until last evening.

    The tire has always been stored in my basement where it’s never cold/hot and humidity is controlled. Would anyone have any issues running this tire for a few months? Although it’s at the majic number of 6 years old where most people say to discard it, there is no sign of degradation, cracking or dryrot. Personally I don’t think there will be an issue. It’s not like I’m running MotoGP in 30+ degree temps.

  2. RossKean

    RossKean Active Member

    I would use it. As long as there isn't any evidence of rot or cracks in the sidewall. Storage conditions are more important than age. Rubber has probably hardened up a bit so traction might not be optimal.
  3. Wayne

    Wayne Well-Known Member

    Our aircraft tires have to be stored in a dark cabinet, so no natural or artificial light.
    I usually always have a new spare set of motorcycle tires and I keep mine in the dark too.
  4. skibum69

    skibum69 Well-Known Member

    I’m still running Michelin Deserts from ‘07 with no ill effects.
  5. Trash

    Trash Active Member

    I had the same kind of thoughts going through my head when I picked up a nail in a tire with only 4,000 miles on it.
    I thought hard about putting a proper patch on the inside, and getting the last 6,000 or so miles out of it.
    Then I thought about the possibility, as slight as it is, of the patch failing as I was running down an Interstate Highway at 80 mph. I guess for me it wasn’t worth the risk for the pro-rated $100 worth of tire life I would be getting.
  6. RossKean

    RossKean Active Member

    A properly applied patch or (better still) a patch-plug would be no concern to me whatsoever. As long as it is straight through the tire and not encroaching on the sidewall. I won't patch a large or ragged hole and will discard the tire if there is evidence of belt damage. Won't repair a tire with less than a third of its life remaining, other than with a roadside sticky string to get me home.

    I have run a number of repaired tires to the wear bars. Both patch-plug and sticky strings. Never had one fail (yet).
  7. Bob

    Bob Active Member

    Leaves me wondering if insurance companies would use an 'expired' tire DOT date to deny a claim.

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