How old must a tire be to be considered a stock tire?

[McJordan]

Tires over 3 years old are considered stock. According to the domestic trade industry standard "Technical Specifications for Tire Claims," the claim period (including unused and normally used tires) is calculated based on the tire production date, with a 3-year period as the valid claim duration. The domestic trade industry standard "Specifications for Tire Marketing Management" further stipulates that tire dealers should not sell tires that cannot be claimed. Here are some precautions to consider when purchasing and using tires: 1. Always check the production date when buying tires: If the production date is too old, do not purchase them. Tires are rubber products and will age even if unused. 2. Regularly inspect tire pressure and surface for damage during daily use: The sidewall of a tire is relatively fragile, and if it is scratched or punctured, it cannot be repaired. It is recommended that car owners replace their tires every four years, even if they have driven relatively few miles within that period.