The life span of a tyre from the date of manufacture is four years.
Now, how do you know the date a tyre was manufactured?
It is written on the tyre as four digits!
Please note that the four digits stand alone, not added to any alphabet. Some manufacturers place the asterics sign (*) before and after the four digits , while others simply encycle it.
You may therefore buy a "brand new" tyre which has since EXPIRED or just about to expire!
Buying a tyre devoid of manufacturing date is a kin to swallowing a pill without an expiry date.