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BobsYourUncle's avatar
Aug 02, 2019

Deciphering Trailer tire date codes

I've never been up on tire date codes, but from what I've read here I thought the date codes had numbers in it.

Found a bad tire on the TT and gotta change it before leaving for 3 weeks.

Can someone help me identify the code on my Goodyear Marathon ST tires?

It says DOT then a series of letters: OHHH MLHR.
I have no idea what this means.

Thanks.
  • Look on backside of tire for DOT number ---4 digit number
    First 2 digits....week
    Last 2 digits.....year

    0814 -----8th week in 2014

    OHHH MLHR.....????
    Code for factory in China where tries were mfg.
  • I only looked on the front, didn't think to look on the other side. All 3 say the same thing. 4th is a China bomb....
    Thanks
  • Just replaced all 4 tires. When they pulled the old ones off, date code was on the back, as suggested here. Thanks! :)

    3 were 2407. 12 years old and original to the TT. Eek! Lots of cracks, uneven wear etc.
    4th tire was a China bomb, dated 2014. Something must have happened before I ever saw this trailer. It had tread cracks too.

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