I thought it was sometime in 68 but an announcer on BJ just said it was sometime in the 80's. They usually know what they're talking about so now I'm currious.....
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Re: When did DOT tire markings first appear?
This has come up before and you'll find threads in the archives. First, use of DOT coding on tires was 1/1/68, but the sequence(s) used were mfgr unique. Approximately, 3/71, those sequences were standardized into what we're familiar with today... -
Re: When did DOT tire markings first appear?
Mandantory by 1/1/68, but you will find a few dated earlier than that. We have seen original tires with just a glued on label showing required DOT infoDick WhittingtonComment
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Re: When did DOT tire markings first appear?
We have seen original tires with just a glued on label showing required DOT info.
The only one I ever saw was in the UK. The car and its current owner came from Belgium. The owner had never dropped the spare tire tub and we had to help/show him how to do it.
That car was a Jan 18th build if I remember correctly. I suspect its tires were WIP (work in progress) at Goodyear when the calendar year changed invoking the new 1/1/68 regulation before the molds had been converted to provide the new sidewall emboss sequencing...Comment
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