How to Accurately Identify the Manufacturing Date of a Tire?

1 Answers
Finn
07/30/25 5:23am
Tire manufacturing dates are marked on the outer side of the tire. Without needing to flip the tire over, you can find a set of numbers on the sidewall of the tire. The last four digits of this number sequence provide information about the production date. These four digits are in the format aabb, where the first two digits aa indicate the week of the year, and the last two digits bb represent the year. Here are some relevant details: 1. Serial Number: Immediately following the DOT letters on the tire sidewall, there is an 11-digit alphanumeric code which serves as the tire's identification or serial number. The last four digits of this serial number indicate the tire's production date. 2. Format: The tire production date code format consists of the first two digits representing the production week and the last two digits indicating the production year. For example, if the last four digits of the DOT code are 4117, it means the tire was manufactured in the 41st week of 2017.
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