How to Check Tire Production Date & When to Replace Old Tires | KOYOOTO

Learning how to check tire manufacture date is a straightforward process that takes under a minute and can prevent a significant safety risk. Every tire sold legally in major markets carries a DOT code on the sidewall. Tire DOT code production year identification works by reading the final four digits of this code: the first two digits are the week of manufacture, and the last two are the year. A code ending in 1122 means the tire was produced in the 11th week of 2022.

The question of how old is too old for new tires has a clear answer from both manufacturers and safety regulators. Most tire brands and organizations including the National Highway Traffic Safety Administration (NHTSA) recommend replacing tires at six years of age regardless of remaining tread depth, and treating any tire over ten years old as end-of-life without exception. Rubber degrades through a process called oxidation: the plasticizers in the compound evaporate over time, causing the rubber to harden and develop micro-cracks that are not always visible on the surface but significantly compromise grip and structural integrity.

When purchasing online, it is entirely reasonable to contact the seller before ordering and request confirmation that stock is no more than 18 months old from the production date. A reputable retailer will provide this information readily. Reluctance or evasion in response to this question is a meaningful signal about how that seller operates.