How to Determine the Tire Date?

[DiAdalynn]

On one side of the tire, there is usually a molded DOT mark. The last four digits of this mark provide information about the production date, consisting of four digits "AABB". The first two digits "AA" indicate the week of the year, while the last two digits "BB" represent the year. Here are the specific steps to determine the tire date: 1. First, locate the U.S. Department of Transportation (DOT) number on the tire sidewall. This number starts with "DOT" and is 10-12 digits long. If the number is not visible, it might be engraved on the inner side. Without connecting to a vehicle, you can simply turn the tire to see the number. Even if the tire is already mounted on the car, you can check the inner side with a flashlight. 2. Now, look at the last two digits of the DOT number. If possible, it's best to write them down. These digits indicate the production year of the tire. If the last digits are "21", it means the tire was produced in 2021. 3. Next, look at the two digits before the last two digits. These digits represent the production week. If the digits are "09", it means the tire was produced in the 9th week of that year.