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Tire use ten taboos
Some people compare the tires to the shoes that people wear. This is not a bad idea, but I have never heard of the story of the explosion of the soles that will kill people. The news that the tires burst and caused the car to be destroyed is always heard. Statistics show that accidents caused by punctures account for more than 70% of traffic accidents on expressways. From this perspective, the importance of tires to vehicles far exceeds the importance of shoes to people.
The user often checks and maintains the engine, brakes, steering, lighting, etc. before traveling, but ignores the inspection and maintenance of the tires. This has laid a certain hidden danger to the driving safety. This article summarizes the top ten taboos for using tires and hopes to provide some help for your car life.
1, avoid the tire pressure is too high. Each automobile manufacturer has special regulations on tire pressure. Please follow the label and never exceed the maximum value. Excessive air pressure concentrates the weight of the car on the center of the tread, causing the center of the tread to wear quickly. When impacted by external force, it is easy to cause trauma or even blast the tread; excessive tension causes tread delamination and tread groove cracking; tire grip is reduced, braking performance is reduced; vehicle is beating, comfort is reduced, vehicle suspension system easily damaged.
2, avoid fetal pressure is insufficient. Insufficient tire pressure can cause the tire to overheat. The low pressure makes the grounding area of the tire uneven, the tread or ply delamination, the tread groove and the shoulder crack, the cord breaks, the shoulder part wears quickly, shortens the service life of the tire; increases the bead and rim Abnormal friction, causing fetal lip damage, or tires and rims, or even puncture; at the same time will increase rolling resistance, increase fuel consumption, and affect the handling of the vehicle, and even cause traffic accidents.
3, avoid relying on the naked eye to determine the tire pressure. The tires will lose an average of 0.7 kg/cm 2 of air pressure per month, and the tire pressure will change with temperature. The temperature will rise/decrease by 10 ° C per liter / drop, and the pressure will rise / fall by 0.07 ~ 0.14 kg / cm 2 ; Be measured while the tire is cool, and be sure to cover the valve cap after measurement. Please develop the habit of measuring the air pressure frequently using a barometer. Do not judge by the naked eye. Sometimes the air pressure runs away a lot, and the tires don't look too embarrassing. Air pressure (including spare tires) 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 100,000 to 80,000 kilometers, the user will use the spare tire as a good tire and use the original tire as a spare tire. This is absolutely not desirable. Because the time of use is different, the degree of aging of the tire is different, so it is very unsafe.
The tires are broken on the road, the owners will generally change the spare tires, and some owners will not remember to replace the spare tires, forgetting that the spare tires are just "prepared tires."
5, avoid the tire pressure is not consistent. When the pressure on one side of the tire is too low, the vehicle will go 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 the same pattern specifications. Different manufacturers and different patterns of tires should not be used for the two front wheels at the same time. Otherwise, deviation will occur.
6, avoid tire overload work. The structure, strength, and air pressure and speed of the tire are determined by strict calculations by the manufacturer. Tires that are not used in accordance with the standard 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%; the rolling resistance of the tire will increase by 45%-60% when the load is 30%, and the fuel consumption will also increase. At the same time, the overload itself is strictly prohibited by the law.
7, avoid the timely removal of tire foreign bodies. When the car is driving, the road surface varies greatly. In the tread, it will inevitably contain foreign matter such as gravel, nails, iron filings, glass fragments, etc. If it is not removed in time, it will take a long time, and some of it will fall off by itself, but there are A considerable part will become more and more "stubborn", and the card will get deeper and deeper in the pattern. When the tire wears to a certain extent, these foreign objects will even pierce the carcass, causing the tire to leak or even puncture.
8, avoid spare tires regardless of regardless. The spare tires are usually placed in the trunk, and oils such as engine oil are often stored in the trunk. The main component of the tire is rubber, and the rubber is most afraid of the erosion of various oils. After the tire is stained with oil, it will soon swell, which will greatly reduce the service life of the tire. So try not to put the oil and spare tire together. If the spare tire has been stained with oil, flush the oil with a neutral detergent.
Don't forget to check the spare tire every time you check the tire pressure. And the air pressure of the spare tire should be relatively high, so as not to run away for a long time.
9, avoid tire pressure is unchanged. Generally, when driving on a highway, the tire pressure should be increased by 10% to reduce the heat generated by flexing, thereby improving the safety of driving.
In winter, the tire pressure should also be increased appropriately. In winter, the outdoor temperature is low, and the tire pressure will be reduced by the expansion and contraction. If the tire pressure is not increased properly, it will not only increase the fuel consumption of the car but also accelerate the wear of the car tire. But it should not be too high, otherwise it will greatly reduce the friction between the tire and the ground, and the braking performance will be weakened.
10. Avoid using tires that have been repaired. The repaired tires should not be installed on the front wheels or used on the highway for a long time. When the sidewall is damaged, the tire should be replaced because the sidewall is relatively thin and is a deformed region of the tire in use, and mainly receives a large circumferential force from the pressure inside the tire.