What are the reasons for the air leakage of automobile tires?

Tire leakage is a problem that all car owners may encounter, so what about tire leakage? The specific situation needs to be treated in a specific way. Let's talk about the cause of tire leakage first.

causes of tire air leakage

1. semi-air leakage means that the tire pressure is obviously insufficient, but there is no light leakage. Specifically, when the tire is inflated at 2.5 bar, the tire pressure decreases to about 1.5 bar

1. Basically, sharp objects such as nails will stick to the tire tread. As long as it is repaired in time, the tire can still be used normally. Please check the tire pressure when checking the tire.

4.BAR, and then spray soapy water on the tread, you can see the initial puncture of the tire, which is convenient for locating the air leakage.

the second type is air leakage, that is, the whole tire is completely deflated and completely deflated.

1. There may be a big hole in the tire sidewall or tread. The tires are basically scrapped and it is unlikely to be repaired.

2. It may be that the valve is broken or the valve core is broken. As long as the tire is not rolling, the tire is still intact, and a new valve or valve core is enough. If there is a puncture, the tire is basically scrapped.

thirdly, chronic air leakage. That is, the tire leaks slowly. After driving for a week, the tire pressure may only drop by .1-.2BAR.

1. It may be that the valve core is leaking. As long as you put some soapy water on the valve core, you can check it out and replace the valve core.

2. There is a possibility of air leakage at the joint between the hub and the tire. During the inspection, the tire pressure should be kept at the normal tire pressure (about 2.5BAR, which should not be too high, because too high will make the pressure between the tire and the hub tighter and it is impossible to check). Apply soapy water to the joint between the wheel hub and the tire. If there is air leakage, you can clearly see small bubbles coming out.

the basic reason: there is a foreign body between the wheel hub steel ring and the tire, or the aluminum alloy wheel hub is aging (this problem should be paid attention to for cars over 4 years old), and the paint on the wheel hub falls off, so that a layer of dry and hard paint falls off between the wheel hub and the tire, resulting in air leakage.

solution: peel off the hub from the tire, remove foreign matters, and polish the joint between the inner side of aluminum alloy steel ring and the tire with sand skin.

3. If the above inspection is normal, there is another possibility that the tire is punctured by nails or other sharp objects (the puncture is not deep or the puncture is thin, which may lead to slow air leakage). If you want to check, you must hit the tire pressure to 4.BAR, spray soapy water to find out where it is stuck, and then you can repair it.

Pacific Auto Network ()

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