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Every tire has string of numbers and letters
molded into the sidewall that tell the tire serial number, DOT compliance code,
and when the tire was made. This information is usually found near the rim, and
often has a flat-head screw imprint both before and after it, as the
information is stamped into a plate that is screwed into the tire mold. Look at
the last three numbers in the code to get the week of manufacture and the year.
If the last three numbers were 127, this would mean the tire was made the in
the 12th week of 1997 (or 1987, for that matter). Why would you want to know
this? Well, if you're buying a car and the owner says they just put on new
tires, but they don't look that new, check the date code. Be aware that you can
buy new tires that may have been sitting in a warehouse for a few years, but
the date code is usually less than 2 years old for new tires.
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