Time for new tires?
Intermediate
Joined: Nov 2009
Posts: 39
Likes: 0
From: Danville CA
Each tire has a required Department of Transportation (DOT) number imprinted on at least one of its sidewalls. That number begins with the letters "DOT" and may contain up to 12 additional numbers and letters.
The first and last digits are the most important:
• The first two letters or numbers identify the manufacturer of the tires.
• Prior to the year 2000, the last 3 digits of a DOT number represented the week (2 digits) and the year (1 digit) of production. So if the last three digits are 439, the tire was produced in the 43rd week of 1999.
• Tires produced after January 1, 2000, have a 4-digit date code at the end of the DOT number. The first 2 digits represent the week of production and the last 2 digits represent the last 2 digits of the year of production. So, 3500 indicates the tire was produced in the 35th week of the year 2000.
"M620" would indicate the 60th week of the year 2000 (we don’t have that many weeks), so I think that this number is not the one you are looking for.
Cheers.
