Generally speaking, it is more appropriate to replace the tire after driving 40,000 to 80,000 kilometers or between 3 and 5 years of use, so that it will not cause danger due to the end of its life, and it will not be replaced too early and waste money.
There is no fixed standard for the time of tire replacement, but it should be judged comprehensively according to the actual wear and tear of the tire, its service life and external factors. In general, there are several situations in which a tire needs to be replaced:
1. Tire wear reaches the limit.
The tires will constantly rub against the ground during driving, resulting in the wear of the tire pattern. The depth of the tire pattern has a direct impact on the tire's grip, drainage and braking performance. If the depth of the tire pattern is less than 16 mm, the legal wear limit has been reached, and the tires must be replaced. Otherwise, the performance of the tires will be drastically reduced, increasing the risk of punctures, slippage, and side slips.
The tires have a TWI (Tread Wear Indicator) logo that indicates the extreme position of tire wear. If the tire pattern is flush with the TWI logo, the tire needs to be replaced. In general, the normal service life of tires is between 40,000 and 80,000 kilometers, which also varies according to driving habits and road conditions.
2. The service life of the tire is more than 5 years.
Tires are made of rubber and other materials, and over time, tires can age, causing changes in their elasticity, hardness, and strength. The manifestations of tire aging include cracks, hardening, and brittleness on the surface of the tire. After the tire ages, the performance of the tire will deteriorate, and accidents such as puncture and cracking are prone to occur. The rate of aging of tires is related to the quality of tires, the environment in which they are used, and how well they are maintained.
Generally speaking, the maximum service life of tires should not exceed 6 years, and even if the wear and tear of the tires is not serious, the tires should be replaced in time. The date of manufacture of the tire can be seen from the four-digit numbers on the sidewall of the tire, with the first two digits indicating the number of weeks of production and the last two indicating the year of production. For example, 1617 means that the tire was produced in the 16th week of 2017.
3. The tires are seriously damaged.
During driving, tires may encounter some external factors that cause damage to tires. For example, the tire is punctured by a sharp object, the sidewall of the tire hits the road tooth, the tire is scratched by a sharp object, etc. These injuries may affect the structure and airtightness of the tire, causing deformation, air leakage, bulging and other phenomena of the tire.
If the tire is seriously damaged, it needs to be replaced in time to avoid danger. If the tire is slightly damaged, tire repair can be considered, but there are certain restrictions on the number and position of tire repair, generally no more than two, and the tire repair cannot be carried out on the sidewall and the center of the crown.
To sum up, the time of tire replacement should be comprehensively judged according to the wear and tear of the tire, the service life and external factors, and cannot be simply based on the number of kilometers driven or the time of use. Of course, the specific situation should be judged according to the actual state of the tire, and it is recommended that the owner regularly check the condition of the tire, find problems in time, and replace the tire in time.