After how many kilometers should tires be replaced?

[McRowan]

Tires generally have a service life of about 3 years or 80,000 kilometers. The judgment methods are as follows: Tread depth assessment: The condition of tire treads directly affects the tire's grip and vehicle stability. If the tread is too thin or worn out, it can lead to longer braking distances and increased risk of skidding in rainy conditions. Therefore, it's essential to regularly check the tread depth. Typically, each tire has tread wear indicators. If the tire wears down to these indicators, it needs to be replaced, meaning the tread depth is less than 1.6mm. Tire rubber aging assessment: For family cars, the daily mileage isn't usually very high, so reaching the tread wear limit isn't common. However, tire aging is a frequent issue. The most common sign of tire rubber aging is the appearance of cracks and fine lines on the tire surface, a phenomenon known as tire cracking. Since tire rubber requires a certain level of hardness, a manufacturing process called vulcanization is used. Vulcanized rubber increases hardness but tends to age over time. Therefore, the service life of tires is around 3 years.