Why did you say the tire was punctured? Don't rush to make up for it.

Now all cars use this kind of vacuum tire. The so-called vacuum tire is not without air, but without inner tube. This tubeless tire has a circle of special butyl rubber mixture of about 2 mm at the joint between the outer tire and the metal hub. Its function is closely combined with the hub to prevent the tire from leaking when inflated. The greater your air pressure, the closer the bond will be.

This is actually the same as the vacuum tire of the electric car we use every day, except that the tire size of the battery car is smaller and the tire size of the car is larger.

The tire was punctured by a nail. If the nail is left on the tire, it will not flatten out immediately.

This is mainly because the vacuum tire will form a certain pressure on the inner surface of the tire when it is fully inflated, which will make the tire tightly wrap the nail after the nail enters, thus achieving the purpose of alleviating the air leakage speed.

Just like the balloon we blow, although it has a small hole, you can gently pinch it with your hand, which can slow down the speed of air leakage. Almost, except that the pressure inside the tire is pressing on this nail. Xiao Li, my car doesn't have tire pressure monitoring, so I can't know the first time when the tire is punctured.

Fortunately, every inspection can basically be found and handled in time, otherwise such nails get stuck in the tires and burst at high speed, which is easy to cause great losses.

Vacuum tires will fail immediately only after direct puncture. Although there will be air leakage after being punctured by something, it is very slight. It's no problem to drive dozens of kilometers or wait until tomorrow to repair it.

This is a bit like the screen of our mobile phone. The screen will not crash immediately if it is broken. In fact, the function of the mobile phone is still normal. You can make a phone call, and you can change it when you have money.

Although you can continue to use it, you must pay attention to the fact that the tire pressure cannot be too low. When the tire pressure is too low, the contact area between the tire and the ground will increase, and the tire temperature will rise sharply, which will easily reach the critical point of the tire and make the tire dry.

This is easy to understand. Everyone knows the principle of friction heat generation. The greater the contact area between the tire and the ground, the greater the friction resistance. Car tires don't have the function of actively spraying water to dissipate heat like big trucks.

The car can only rely on the oncoming airflow to dissipate heat, and when it reaches a certain critical point, the heat generation speed is faster than the heat dissipation speed, which is easy to cause tire puncture.

It doesn't matter what the tire pressure is too low, does it? According to the requirements of the national indoor test method for automobile tire performance, the tire pressure should be kept above 1.4 kg as far as possible.

If the air pressure is lower than this, you can continue to run for dozens of kilometers to find a car repair shop. Don't worry.