After how many kilometers do tires need to be replaced?

[JuniperRose]

Tires should generally be replaced after approximately 80,000 kilometers based on mileage. Here is more relevant information: 1. The typical service life of tires is 6 years. The mileage and road conditions vary, as do driving habits, so even for the same vehicle model, tire wear can differ. 2. On the sidewall of the tire, there is a '△' symbol every 30 degrees, which serves as a tire wear warning indicator. According to Chinese national standards, the tread wear limit for passenger car radial tires is 1.6mm, while for trucks and buses, it is 2.0mm. 3. Looking along the triangular symbol toward the tire surface, when the tread wears to 1.6mm above the groove base, the groove will begin to crack, showing noticeable fissures. For self-inspection, car owners can use a key for comparison—if the groove depth is close to the key's thickness, the tires need replacement.