However the date code is (usually) only found on one side of the tire.
Most DOT numbers have between 6 and 8 letters/numbers mixed, and then the date code follows that.
Also, during the early 1990’s, Continental added a triangle (◄) to the end of the character string to distinguish a tire built in the 1990’s from previous decades (e.g., a tire with the information "DOT XXXXXXX274◄” was manufactured in the 27th week of 1994).
We recommend: All tires (including spare tires) that were manufactured more than ten years ago should be replaced with new tires, even if they appear to be usable from their external appearance and if the tread depth may have not reached the minimum wear out depth.
Therefore, because it is a safety issue, we recommend against using any tire more than six years old, and we cannot service them.
Granted, this type of failure can also happen to tires less than six years old when they heat up, but as the tire ages, the chances of having this problem go up dramatically.
The last two numbers identify the year of manufacture (e.g., a tire with the information "DOT XXXXXXX2714” was manufactured in the 27th week of 2014).