Just out of curiosity, what year did they start putting date codes on tires? On my old (1980) pickup, which I just buy used tires for, and my 65 mustang, which just gets used for cruise nights and shows, I can't find any numbers that could possibly be date codes. I find it on my new (2014) car, but not on any of the old ones, so just wondering how old the tires probably are?
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