Can a spare tire that has been stored for eight years still be used?

[Cayden]

A spare tire that has been stored for eight years cannot be used. Tires have a limited lifespan, and once they exceed this period, they should no longer be used. This is because tires are made of rubber, and both spare tires and those in use have a certain aging period. The effective lifespan of a car spare tire is approximately four years. After this period, the spare tire should be replaced to ensure it is available for emergencies. Tires are typically mounted on metal rims, supporting the vehicle body, absorbing external shocks, maintaining contact with the road, and ensuring driving performance. Tires often operate under complex and demanding conditions, enduring various deformations, loads, forces, and extreme temperatures during use. Therefore, they must possess high load-bearing capacity, traction performance, and shock absorption capabilities.