Tire Manufacturing Date and Expiration
The importance of knowing tire manufacturing date is to know tire expiration whether the tire is still safe to use or not.
According to Japan Tire Manufacturing Association (JATMA), tire expires 10 years after the manufacturing date, this mean that un-used tire is not safe to use beyond ten years. However, if the tire is put to service after the manufacturing date, it should only be put into service for 6 years. Tire that is used by car for more than 6 years from the start of manufacturing date must be replaced.
According to the tire and rubber manufacturer, it’s very hard to determine the expiration of a tire because of a lot of factors that affects tire aging.
Tire Manufacturing Date
The tire manufacturing date was stamped on the side wall of the tire. When you look closer the at the tire side wall it can easily be spotted, a 4 digit number.
The above example the tire was manufactured on: 7th week of 2007, which means that the tire was manufactured in February 2007. So, if the tire is put to service after the manufacturing date it should be use until February 2013. However, if the tire did not put into service after the manufacturing date, the tire must not be put in used beyond February 2017.
