After the tire was punctured by a nail, it didn't stop driving immediately. Even ordinary vacuum radial tires can run for tens of kilometers continuously.

How far can ordinary tires run?

Stabbing with a nail will not be effective immediately.

This is mainly because most cars now use tubeless tires, or "vacuum tires", without inner tubes.

There is a paper in the magazine "Construction Machinery and Maintenance", which mentioned the common sense of using and maintaining tubeless tires.

This kind of tire has an airtight layer made of special butyl rubber mixture at the bead of the joint between the outer tire and the metal hub, and the thickness is about 2 to 3 mm.

After installation, it will stick tightly to the hub, and the more air is pumped, the better the sealing performance will be.

This is like: the rope is knotted, and the more you "pat" there, the more you tie it, and you can't untie it.

The advantage of this design is that the outer tire also has the function of inner tube.

There is also a paper in the journal of Light Vehicle Technology, which mentioned the use and maintenance of automobile tubeless tires.

After the tubeless tire is inflated, the tension on the outer surface of the tire will increase, and at the same time, a certain pressure will be formed on the inner surface.

Once things like nails "pop up", the surface pressure inside will tightly wrap the foreign body and slow down the air leakage.

Have a certain peripheral and self-sealing ability, and will not be completely unusable at once.

For example, when the doctor gave you an injection, he didn't say, "You relax, you relax!" When your skin and muscles are tense, you will say, "Ouch! I'm afraid of pain! "Sometimes when the needle goes in, it will be caught and it won't come out.

This is similar to a nail that can't be pulled out: "Relax, don't be nervous." Our tires are always tight.

Generally can run dozens of kilometers.

It's the same article just now: tubeless tires will only fail if they burst.

After being pierced by a nail, it will only leak slowly and will not lead to immediate death. It can drive at least tens of kilometers, and it is enough to find a tire repair shop to repair the tire.

For example, the screen of the mobile phone is broken: "Oh, it hurts, it hurts." Not to say that it is broken now, and it will collapse immediately; As soon as the screen is spent, nothing can be used immediately.

It's not impossible for you to make a phone call or wait until you get paid next month.

Pay attention to the change of tire pressure.

But when you continue driving, you should pay attention to the change of tire pressure.

Wuhan University of Technology has a paper "Design of Automobile Tire Pressure Monitoring and Tire Burst Safety Control System".

If the tire is used under the condition of low tire pressure, the wheel subsidence will increase, the radial deformation will increase, the friction with the ground will also increase, the internal stress in the tire carcass will rise, and the temperature will rise sharply, leading to accelerated aging.

If you still drive at high speed as before, it may even lead to a decrease in tire strength and a flat tire.

I don't remember anything in front, just like: basketball and football haven't been refueled for a long time, and they don't need to be put there, so they may be broken.

If you find that the tire has been punctured by nails, you need to pay attention to the residual tire pressure.

According to the requirements in the national standard GB/T 4502-20 16 "Indoor Test Method for Automobile Tire Performance", the standard automobile radial tire should be tested at 1.4bar, that is, "kg".

Therefore, after the tire leaks, try to control the tire pressure above 1.4bar and try to slow down the driving speed.

Friends who have tire pressure monitoring can just watch tire pressure monitoring directly. No, only friends who call the police can make a rough estimate.

For reference, Federal Regulation (FMVSS) Federal Motor Vehicle Safety StandardNo. 138.

As standard vehicle equipment, when the tire pressure alarm is triggered, it means that the tire pressure is 25% lower than the set standard value.

If the tire pressure is too low to drive to that place, or something, it is also useful to find a place first, or bring a small pump, and then catch your breath first.

"Modern Rubber Technology" has a paper "Analysis on the Structural Characteristics and Performance of Automobile Tires", which says that tubeless tires can continue to run even if they have a flat tire, as long as they are inflated at any time according to the tire pressure.

Just like: as long as the phone doesn't have a black screen and doesn't crash, it can continue to be used even if the screen is broken.

My tire was flat, and I got up after hitting it a little. After driving for a while, it was flat again. It's okay for me to hit a little and get up again.

When it comes to pumping air, the electric air pump for automobiles is quite practical. The power supply of cigarette lighter can be connected, generally with tire pressure display, which can quickly inflate.

And girls can also operate, not dirty hands, to prevent the anchor, my family also sells, you can go and have a look.

Michelin portable air pump | 3 minutes full, easy to put in glove box.

Accurate charging | Tire pressure monitoring is accurate to 2 decimal places.

How far can a flat tire run?

What I said just now was ordinary tires. After the nail is nailed, it can run for dozens of kilometers. If the tire is flat, it is what we call a "flat tire", so we can rest assured.

Beijing Rubber Industry Research and Design Institute published a paper "Investigation on the Development Status of Foreign Safety Tires", saying that there is a relatively thick layer of reinforced rubber with high hardness and low heat generation inside the sidewall of this tire.

When the tire inflation pressure drops and the sidewall deforms to a certain angle due to gravity, this layer of reinforcing glue will gradually harden from the beginning and begin to bear the weight of the car.

This is like saying that there is a spring on the sidewall of the tire that will automatically harden, usually soft. After coming down, I pushed it up with a bang.

There are many papers in this field, which are also published in Tire Industry magazine, and the load capacity of run-flat tires under zero inflation pressure is also recorded.

A run-flat tire needs to run at a speed of 80km/h for more than 80km at zero inflation pressure.

I inserted a nail and the air leaked out. If I keep driving, I can still drive 80km kilometers, almost 100 kilometers. This is amazing. This is called "run-flat tire".

We, uh, you see, what we said before was: If you're running out of gas, you can pump a little. If there is really no place to fight, just drive twenty or thirty kilometers.

This is flat, and you can drive 80km without oil. You can always find a tire repair or gas station within 80 kilometers, right?

After a flat tire, it must be enough to find a reliable repair shop.

So generally speaking, after a flat tire, you can still travel for twenty or thirty kilometers, but you must pay attention to the tire pressure.

Run-flat tires and run-flat tires, whether you pay attention to the tire pressure or not, can drive hundreds of kilometers, which is definitely enough for us to find a tire shop.

Don't worry about finding some shops you don't trust on the road. If you think it's too expensive, just drive to what you think is ok.

How many years can a tire last at most?

What are many friends worried about tires? How long is the tire life? How many years can a tire last?

Someone said, "Look at the pattern." Some said, "Look at the years." Some said, "Knock with a hammer." Someone said, "Hey, I did the math for you. Anyway, I can still use xx time."

What is the most scientific, economical and economical suggestion for tire replacement cycle? I also prepared some reference values for you.

Then, have you noticed that I often do it myself when this car is new, especially when it is new?

"Gung" opened a circle outside and stopped when he came back. When I squatted down, I saw many small stones in the tire seam. It's too uncomfortable. Do you want to take it out? Dig as much as you want.