How Do You Tell the Age of a Tire?
As tire experts, we are frequently asked if there’s an accurate way to determine the age of a tire. There certainly is, and it is relatively easy to find and keep track of yourself.
Like most products, tires have serial numbers that are known as the Tire Identification Numbers (TIN). TIN is a set of ten to twelve letters and numbers that are unique to each batch of tires. This number identifies the manufacturer; manufacture location, size and its “born-on” date (the week and year of production). There have been subtle changes made to the TIN over time, so below is an explanation of how to determine a tire’s age.
Tires Manufactured Prior To 2000
For tires manufactured before 2000, you will only look at the last 3-digits of the TIN. The first two digits reflect the week of the year and the third digit reflects the year of the decade in which the tire was produced. The 3-digit method creates some confusion because there is no easy way to determine the decade of a tire’s production. Some tires produced in the 1990s had a small triangle after the TIN.
Tires Manufactured After 2000
The last four digits of a tire’s TIN identify its date of production. The first two digits reflect the week and the last two digits reflect the year of production. For example, if the TIN was “DOT 27BP YP1A 2104”, the tire was produced on 21st week of 2004.