Sihaiwang: automobile tire is one of the most important parts. A good tire is absolutely one of the most important things in your driving sense. Good tire noise, braking distance, skid resistance and wear resistance are all excellent. How often does the tire change as a consumable? How many years does the tyre last? When should I change the tire?
The service life of automobile tire is several years
This problem should be a 'specific problem specific analysis', but usually the service life recommended by tire manufacturers is 2-3 years, which does not include commercial vehicles. It can be understood that' special vehicle 'is also one of them, so these vehicles can drive 50000 km in a year, and it is necessary to replace.
Generally, the replacement shall be carried out according to the condition of "wear" within the service life. According to the specific situation of tire aging, it is recommended that the replacement cycle of tire be 3 years. Even if the use environment is good, the mileage is not much, and the tire wear is not big, but because of its service life, the risk on the road after the 'warranty period' will increase greatly, especially on the high-speed.
When do I need to change a car tire
1. Frequent replacement
Many friends don't care too much about the punctured tires. If the same tire is punctured repeatedly, can it be repaired frequently. One or two times of tyre repair will not affect the use of the tyre, but after more than three times, it is recommended to replace the tyre for safety reasons. Because when driving at high speed, the temperature in the tire increases, and the damage is too much, although it has been made up, it still increases the probability of danger.
2. Severe wear
Each tread groove has a wear limit mark, which is about 2mm thick. It is suggested that the tyre should be replaced when the thickness of the tyre is worn to the distance limit mark of 4mm, i.e. about 6mm from the deepest groove.
3. Puncture of fetal wall
If the damaged part is located at the lower side of the mark near the edge of the wheel hub, the tyre must be replaced at this time, because the strength of the steel wire here is very weak, and it will be squeezed and deformed in the process of mounting the tyre after repair, so it is difficult to ensure the repair effect.
4. Serious aging
Observe the tread and the striation on the sidewall of the tire. If cracks are common, it indicates that the tire has been aged seriously. At this time, although the mileage is not long or the service time is not long, it still needs to be replaced in time. Otherwise, due to the weakening of the tire wall strength, the aging tire is prone to tire burst due to the temperature rise in high-speed driving.
5. Lifting deformation
It is a very dangerous thing for the tyre to be out of shape. If the tyre is out of shape, it is better to go to a professional repair shop for inspection and treatment at the first time. Generally, it is recommended to replace the tyre. The occurrence of such conditions in the tire proves that the metal coil inside the tire has been deformed or broken, and if you continue to drive, there is a high risk of tire explosion.
What are the factors that affect tire life?
1. Tire brands, different brands of wheels wear differently.
2. The date of tire leaving factory is short, and the rubber has strong wear resistance. Generally after three years, the tires wear fast.
3. The tires shall be replaced 5 years after delivery, whether they are worn or not.
4. The car positioning parameter is that the tires with four wheels positioned are evenly worn and the service life is correspondingly increased.
5. Under normal circumstances, when observing the tire wear and showing, replace it in time (tire wear mark, small protruding bump in the tire groove).
The above describes the relevant content of the car tire life is several years. Let's take a look at the common sense of car tire maintenance.
1. Tyres also have a shelf life:
Tires are rubber products, so there will be rubber aging phenomenon. The warranty period of tire rubber is generally 4-5 years. The aging of tire rubber will accelerate after its shelf life, resulting in the degradation of tire performance.
For example, '9mcr0810' is the tire production date code. Among them, the last four digits' 0810 'indicate that this tire is the product produced in week' 8 'of' 10 '.
2. Tire pressure inspection must be carried out monthly:
Under pressure and over pressure will lead to abnormal tire wear, shorten the life of tire, increase fuel consumption and even increase the probability of tire blowout. Tire experts suggest that we check the tire pressure once a month to ensure that the tire pressure is normal.
The tyre pressure check must be carried out when the tyre is cold. You can use a tire pressure gauge or a tire pressure monitoring system (TPMS) to check the tire pressure. The vehicle manual will list the standard tire pressure of the vehicle under various load conditions. At the same time, this parameter will also be listed on the label beside the driver's door.
The standard tire pressure is about 2.2-2.6bar. Too high tire pressure may increase tire wear and may cause tire blowout, while too low tire pressure may increase fuel consumption and vehicle bumpiness. Generally speaking, the tire pressure can be slightly lower in summer and slightly higher in winter.
3. Not all tire damage can be repaired by tire repair:
Not all tire damage can be repaired. In the following cases, we have to replace new tires:
1. The binding pin of the tread and the hole diameter of the pin are larger than 6mm.
2. Binding, cracking or air leakage of shoulder or sidewall.
3. After the explosion-proof tyre binding nail with the sidewall strengthening technology leaks air, it has driven for a certain mileage with low tyre pressure.
4. The pin leakage of common tire is close to zero tire pressure for a certain mileage.
4. Always pay attention to the tire wear mark:
The wear mark of the tire is located in each main drainage channel of the tire, which is a rubber boss with trapezoid section. When the tyre pattern is worn to be even with the wear mark, the tyre must be replaced. In the rainy season, in order to prevent vehicles from skidding on the ponding Road, the tyre tread depth must be kept at least 3mm.
5. Attach importance to four rounds of transposition:
If the vehicle has some problems such as deviation, heavy steering wheel and wear on one side of the tire during driving, these phenomena are to remind the owner of the need to adjust the vehicle's four-wheel positioning immediately. Due to the steering wheel, the front wheels wear faster than the rear wheels. In order to prolong the service life of the tyres, the tyres should be replaced regularly, so as to make the tyres wear evenly. Auto repair experts suggest that the front wheel drive vehicle should be rotated once every 8000 kilometers.