Do you want to replace the car tyres after they have been used for 60000 km for five years? In fact, strictly speaking, there is no authoritative statement to define that tyres must be replaced after a certain number of years and kilometers of use.
However, what is usually said about how many kilometers and how long to replace a tire is actually more a suggestion given by tire manufacturers based on their experience.
Just like the recommended service time and mileage given by the tire manufacturer, excluding the unnatural damage of the tire, the service life of the tire is generally divided into “mileage life” and “service life”. “Mileage life” refers to the kilometers that our tires can reach.
Generally speaking, when the tread groove depth of our tire reaches the specified minimum wear indicator (that is, the tread pattern depth is less than 1.6 mm), it means that the tire must be replaced. There are many factors affecting mileage life:
1. Incorrect use and maintenance, abnormal tire pressure, and failure to do four-wheel alignment in time will cause abnormal tire wear.
2. Differences in road conditions and driving styles, frequent braking, and uneven road conditions. The “service life” refers to the durability of the tire. Tires are composed of materials and rubber compounds with various properties. The characteristics of these components will change with the change of service time and mileage, for example, tire rubber will age. There are also many factors that affect the aging of tire rubber, such as climate, storage and service conditions (including load, speed, inflation pressure, maintenance, etc.).
Therefore, no matter for “mileage life” or “service life”, it is difficult to accurately determine the final service life of a tire based on a variety of influencing factors. Michelin Tyre provides such reference conditions for judging whether the tyre is used according to its service life and mileage.
1. For tyres that have been used for 5 years or more, it is recommended that professionals should check the pressure at least once a year, in addition to the daily check pressure, to determine whether all tyres (including spare tyres) can continue to be used.
2. Tires that have been used for more than 10 years are not recommended for further use. For safety reasons, including the spare tire and the tire that looks very durable or has not worn to the wear indicator should be replaced.
3. Observe whether the tire reaches the wear indicator; Whether it is seriously damaged; Whether there is aging phenomenon can be used as a reference to judge whether it needs to be replaced. In daily life, what methods can be used to prolong the service life of tires?
First, good driving habits should slow down when encountering rough and bumpy roads, and do not brake hard; Try to avoid crossing the road. When driving, parking or storing tires, be careful not to contact with “oil, acid, inflammable and chemical corrosives”
Second, too low a proper tire pressure will increase the contact surface between the tire and the ground, resulting in excessive wear on the tire shoulder; Too high tire pressure will make the tread grounding area too small, causing premature wear of the tread center, which is also bad for the tire. Therefore, keep the tire pressure within the range recommended by the automobile manufacturer.
Third, the four-wheel alignment and balance of the vehicle When our wheels are rotating in an unbalanced state, individual parts of the tires are under great stress and wear faster. Through four-wheel alignment, the angle of wheels can be adjusted to ensure correct toe in and camber angle and effectively avoid partial tire wear.
Therefore, the use of tires should not be “arbitrary” only according to the recommendations given by tire manufacturers. Cultivate good driving habits, often check and maintain the tyres we use, and when problems are found, judge whether the tyres are replaced by combining various factors, which is the correct way!