Some people compare tires to shoes worn by people. This is not a bad idea, but they have never heard of the story that a burst in the sole will kill people, and the news that a burst in the tire will cause car crashes and deaths is heard from time to time. Statistics show that more than 70% of traffic accidents on expressways are caused by flat tires. From this perspective, the importance of tires to vehicles far exceeds the importance of shoes to people.

Before traveling, users often only check and maintain the engine, brakes, steering, lights, etc., but ignore the inspection and maintenance of tires, which lays certain hidden dangers for driving safety. This article summarizes the ten taboos of using tires, hoping to provide some help for your car life.

1. Avoid excessive tire pressure. All automobile manufacturers have special regulations on tire pressure. Please follow the signs and never exceed the maximum value. If the air pressure is too high, the weight of the vehicle body will be concentrated on the center of the tread, resulting in rapid wear of the center of the tread. When impacted by external force, it is easy to cause trauma or even burst the tread; excessive tension will cause tread delamination and tread groove bottom cracking; tire grip is reduced, braking performance is reduced; vehicle bounce, comfort is reduced, and vehicle suspension system is easy damage.

2. Avoid insufficient tire pressure. Insufficient tire pressure can cause the tire to overheat. Low pressure makes the tire's ground contact area uneven, tread or ply delamination, tread groove and shoulder cracking, cord breakage, rapid wear of the shoulder, and shortening the service life of the tire; increase the bead and rim The abnormal friction between the tire can cause lip damage, or the tire is separated from the rim, or even a tire burst; at the same time, it will increase rolling resistance, increase fuel consumption, and affect the handling of the vehicle, serious even cause traffic accidents.

3. Avoid judging tire pressure by naked eyes. On average, the tire will lose 0.7kg/cm2 of air pressure per month, and the tire pressure changes with the temperature. For every 10 ℃ temperature rise/fall, the air pressure will also rise/fall by 0.07~0.14kg/cm2; air pressure It must be measured when the tire is cooling, and the valve cap must be covered after measurement. Please develop the habit of using a barometer to measure air pressure frequently, and do not judge by the naked eye. Sometimes the air pressure runs off a lot, but the tires don't look too flat. The air pressure (including the spare wheel) should be checked at least once a month.

4. Avoid using the spare tire as a normal tire. When the vehicle is in use, if it runs 100000 to 80000 kilometers, the user will use the spare tire as a good tire and use the original tire as a spare tire. This is absolutely undesirable. Because the use time is different, the tire aging degree is not the same, so it is very unsafe.

When the tire breaks down on the road, car owners usually change into spare tires. Some car owners do not remember to change the spare tires, forgetting that the spare tires are only "tires prepared in case".

5. Avoid inconsistent tire pressure. When the tire pressure on one side is too low, the vehicle will deviate to this side during driving and braking. At the same time, it should be noted that the two tires on the same axle should have exactly the same pattern specifications. Tires of different manufacturers and different patterns cannot be used for the two front wheels at the same time, otherwise deviation will occur.

6, avoid tire overload work. The structure, strength, and operating pressure and speed of the tire are strictly calculated and determined by the manufacturer. Overloaded tires that do not comply with the standards will affect their service life. According to the experiments of the relevant departments, the tire life is reduced by 20% when the overload is 10%; when the overload is 30%, the rolling resistance of the tire will increase by 45%-60%, and the fuel consumption will also increase. At the same time, overload itself is strictly prohibited by the law.

7, do not remove the tire foreign body in time. When a car is driving, the road surface is very different. The tread pattern will inevitably be mixed with foreign objects such as gravel, nails, iron filings, glass fragments, etc. If it is not removed in time, some of them will fall off by themselves, but there are A considerable part will become more and more "stubborn", getting deeper and deeper in the pattern. When the tire is worn to a certain extent, these foreign objects will even puncture the carcass, cause tire flat or even flat tire.

8, avoid spare tire don't care. The spare tire is generally placed in the trunk, and the trunk often stores oil and other oils. The main component of the tire is rubber, and the most afraid of rubber is the erosion of various oil products. After the tire is stained with oil, it will soon expand and corrode, which will greatly reduce the service life of the tire. So try not to put oil and spare tire together. If the spare tire has been stained with oil, wash the oil with neutral detergent in time.

Every time you check the tire pressure, don't forget to check the spare tire. And the air pressure of the spare tire should be relatively high to avoid running away for a long time.

9, avoid tire pressure unchanged. Usually when driving on the highway, the tire pressure should be increased by 10% to reduce the heat generated by flexing, thereby improving the safety of driving.

Winter should also be appropriate to increase tire pressure. In winter, the outdoor temperature is low, and the tire pressure will also decrease due to thermal expansion and contraction. If the tire pressure is increased inappropriately, it will not only increase the fuel consumption of the car, but also accelerate the wear of the car tires. But not too high, otherwise it will greatly reduce the friction between the tire and the ground, and the braking performance will be weakened.

10, avoid the use of repaired tires do not pay attention. The repaired tires should not be installed on the front wheels, nor should they be used for a long time on the highway. When the sidewall is damaged, because the sidewall is relatively thin and is the deformed area of the tire during use, it mainly bears the large circumferential force from the air pressure in the tire, so the tire should be replaced.