tire mfg date?

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**bergy** · #1 08-30-2020, 08:02 PM

Interesting Mike - That opens the door for these tires being 1969 vintage. Since the universal code of 4 characters followed by 6 characters went in effect in 1973, my tires don't conform to that system - they are 4 characters followed by 7 characters. So, maybe Goodyear only coding prior to 1973?

**Steve Shauger** · #2 08-31-2020, 02:56 PM

Quote:

Originally Posted by bergy

Interesting Mike - That opens the door for these tires being 1969 vintage. Since the universal code of 4 characters followed by 6 characters went in effect in 1973, my tires don't conform to that system - they are 4 characters followed by 7 characters. So, maybe Goodyear only coding prior to 1973?

After May, 1971, DOT coding format was the same for all tires. 10 digit which included (3-digit date code WWY) I believe sometime after 1978 it may have changed to 11 digit). I need to do some research to confirm...

In 2000, and (12) digits (4-digit date code -WWYY)

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