Five situations are easy to be "poked"

So what is the reason for the flat tire of the car? Luo Kaijun, a senior engineer at Chengdu Kelon Maintenance Service Station, said that there are many reasons for vehicle puncture, mainly related to temperature, road conditions, tire pressure, tire use and tire trauma, especially temperature, which is the "culprit" of "puncture". Therefore, May-10 every year is the high incidence period of "puncture".

1, high temperature leads to "flat tire". When the car is driving at high temperature, due to the effect of thermal expansion and cold contraction, the tire is easy to deform and the tension will decrease. In addition, the tire is constantly heating during driving, but the heat dissipation is slow, so the air pressure will increase, which will cause the carcass to be too thin and puncture.

2. Abnormal tire pressure leads to "puncture". Abnormal tire pressure refers to insufficient tire pressure and excessive tire pressure. Abnormal tire pressure will lead to local tire wear, reduced handling and comfort, and increased fuel consumption. When the tire pressure is insufficient, the tire sidewall is easy to bend, break and burst. If the tire pressure is too high, tire defects (such as damaged parts) will burst at high speed.

3. Bad tire condition leads to "flat tire". Excessive tire wear, aging, cracking and trauma are also one of the causes of tire puncture. After long-term friction with the ground, the pattern gradually becomes shallow, and the replacement sign should be stopped immediately when it is worn.

4, poor road conditions lead to flat tires. Road conditions also have a great influence on tires. For example, on uneven or gravel-rich roads, vehicles are easy to run over hard metals or other hard objects during driving, which may also lead to tire puncture.

5, speeding leads to a flat tire. The temperature is high in summer, and the road surface temperature is also high. Continuous driving and speeding are easy to puncture.

"trick" puncture-proof tire

Tips: Daily maintenance

1) Be sure to check the tire pressure, including the spare tire, under cooling conditions. If the air pressure is insufficient, find out the cause of air leakage immediately.

2) Always check whether the tires are damaged, such as nails and cuts, and repair or replace the damaged tires in time.

3) Avoid tire contact with oil and chemicals.

4) Check the four-wheel alignment of the vehicle regularly. If the positioning is found to be poor, it should be corrected in time, otherwise it will cause irregular tire wear.

5) Under any circumstances, do not exceed the reasonable speed required by driving conditions and traffic rules, and avoid or pass slowly when encountering obstacles such as stones and potholes ahead.

Key points: apply science.

1) Don't overspeed. Speeding vehicles are "road killers", and speeding is easy to puncture, so "no speeding" should be the motto of riders.

2) No overload. Relatively speaking, some cars are more prone to puncture when driving, such as trucks and buses, especially in the case of overload, the frequency of puncture is higher.

3) Do not use tires that have exceeded their service life. Expired tires, even if they are used on the road for the first time, are against the safety principle.

4) Use less retreaded tires. Although retreaded tires are environmentally friendly and economical, the retreading technology is not very mature at present, and brand tires should be used from the perspective of safety.

5) In hot summer, if it is necessary to park the vehicle for a long time, it is best to park the vehicle in a cool place to avoid the tire being exposed to the sun.

6) Before getting on the expressway, carefully check the air pressure of the four tires. If the tire pressure exceeds the standard, it will deflate, and if it is too low, it will refuel. During driving, we should also pay attention to the tire pressure in time to keep it within the standard air pressure range.

7) Don't sprinkle water on the tires of hot cars. Usually stop after driving for two hours on the highway, but you can't water the tires to avoid deformation.

8) In case of a flat tire, don't panic, don't brake suddenly, hold the steering wheel tightly, keep the vehicle driving in a straight line, lightly step on the brake pedal to slow down the vehicle and pull over as soon as possible. You can change your spare tire after parking, drive to the repair shop slowly, or call the emergency number for help.

Tip: Use new equipment.

1) Install the tire pressure tracking system. This is currently recognized by the industry as an effective way to prevent vehicle puncture. Tire pressure tracking system has become the standard configuration of some family cars. There are also merchants in Chengdu automobile market who provide such equipment.

2) Before the vehicle leaves the factory, the standard air pressure of the tires has been strictly measured, and a yellow "Tire Pressure Warning Board" has been posted on the driver's side door, so the owner can test the air pressure of four tires according to the air pressure standard marked on the warning board before getting on the expressway.

3) It is best to bring spare tires, jacks, tire cranks and other tools when going out. If the tire bursts, pull over. Take off the tire cap on the wheel, jack the tire off the ground, loosen the screw on the tire with a crank, take off the broken tire, put on a new tire, screw on the tire screw and cover the wheel cap.

4) It is best to replace the iron rim with the aluminum rim, because the iron rim absorbs heat slowly and dissipates heat slowly, while the aluminum rim, on the other hand, absorbs heat quickly and dissipates heat quickly, which has a good divergent effect on the heat generated by the running tire.