The life span of a fetus is usually 3-5 years. The life of tire is related to its material, driver's driving habits and driving environment. For example, truck tires for trucks, buses, etc. And light truck tires for trucks, bread trucks and the like. It is usually inspected after 5 years of use and replaced when necessary. If it reaches 10 year, it should be updated whether it is used or not.
It's best to change the tires of a car to the same brand:
In general, the four tires are of the same brand and specification to ensure the best performance of the vehicle. If the tires are different, it may have a certain impact on handling and stability. But usually, the front tire is more worn than the rear tire, so it is not cost-effective to replace four tires together. Usually, two tires on the same axle are replaced. If you want to replace four tires together, you need to replace the front and rear tires when the service life of the tires is more than half.