Tire DOT Date Code Decoder
Every tire's birthday is molded into its sidewall. Type the last 4 digits of the DOT code — get the manufacture date, the tire's age, and what the industry says about it.
Age guidance reflects widely-published industry recommendations, not a substitute for a hands-on inspection — damage, weather-cracking or poor storage can end a tire's life much earlier.
Time for fresh tires?
Consumers: we'll route you to professional installation near you. Dealers: wholesale pricing on fresh-date stock from Orlando and Dallas.
Common questions
How do I read a tire's DOT date code?
The last four digits of the DOT code are the week and year of manufacture: 3523 means week 35 of 2023. The full DOT code appears on the sidewall, though the date group may only be molded on one side of the tire.
How old is too old for a tire?
Industry guidance: professional inspection every year from age 5, many manufacturers recommend replacement between 6 and 10 years, and 10 years is the widely-accepted maximum regardless of tread depth. Rubber ages even when the tire isn't used.
Why do trailer tires age out faster?
Trailer tires typically die of age, not mileage: they sit in the sun, carry heavy loads in short bursts, and build heat at highway speed. Most trailer-tire guidance calls for replacement around 5–6 years even with plenty of tread left.
My tire has a 3-digit date code — what does that mean?
Three-digit date codes were used before the year 2000, which makes the tire more than two decades old. Replace it immediately.