Quote:
Originally Posted by BFlinn181
You're incorrect on the reading of your code example. The code was mandated beginning in 1980. A DOT code of 199 would be the 19th week of 1989. A code of 337 would mean 33rd week of 1987. From 1990-1999 the three digit code was followed by a triangle(Δ) symbol to show it was the 9th decade of the century so it wouldn't be confused with the previous decade. The DOT code for a tire made in the 19th week of 199 would be marked 199Δ.
If you find a 3 digit code, with or without the Δ, the tire is too old to safely run. That's why I didn't mention the older code system. If you find a 3 digit code, it's a tire made prior to 2000 and has been around at least 14 years old.
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Ummmmmm, does make sense and don't remember seeing that triangle symbol on my original set and had one left for a spare up until last summer. Just goes to prove that you learn something new, each day.
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