The U.S. Department of Transportation (DOT) number stamped on the tires sidewall contains a date code that identifies the age of your tires.

Are there date codes on tires?

To find your tires age, you need to locate the DOT Date Code on the tire. On tires that were manufactured in 2000 and after, the last four digits indicate the week and year the tire was produced. The first two digits identify the week and the second two identify the year.