Recently bumped into an ABC report on the age of tires and how a brand new tire, max tread can actually be years old (due to the practice of retreading the tire for resale). From the report, it appears the US is one of only a handful of countries that don’t place expiration stamps upon their tires. The lobby responsible for this disinformation claims there is no need but most civilized countries around the world recognize the actual life of a tire is no more than six years. Not six years then slap on another tread. No, six years in total.
Check out the clip here. Interesting stuff. When I took a look at the tires on both my rigs, I found one was two years old, the other four years old. Worth checking on.