Glossary
DOT date code
The last four digits of the Tire Identification Number — first two digits are the production week (01–52), last two are the year. Example: "2524" = week 25 of 2024.
The date code informs age review; it does not replace condition inspection. There is no single federal age limit that automatically removes a commercial tire from service based on date code alone.
Real-World Use
A buyer checking used trailer tires records the date code, then still inspects storage cracking, repairs, and tread condition — age is one input, not the complete answer.
What to Pair It With
Read this term with the full tire sidewall, vehicle rating information, manufacturer documentation, and the actual condition of the tire.
This site is for general information only. It does not replace professional tire service, DOT compliance advice, tire manufacturer instructions, vehicle manufacturer recommendations, or fleet policy.