What are the features of tubeless tires? What are the advantages and disadvantages of tubeless tires

Tubeless tires are similar in appearance to tubeless tires, and since they do not have an inner tube, the bead is required to differ from the wheel load by having a rubber layer and a self-adhesive layer on the inner wall that is specially designed to seal. For example, when the Santana sedan is driving, when the tire is perforated, it must have a good sealing self-adhesive layer, which can glue the punctured hole by itself. Usually a number of annular grooves are made on the bead, and under the action of air pressure in the tire, these grooves can make the bead reliably adhere to the copper edge of the wheel, so as to ensure the air tightness between the tire and the wheel auxiliary.

Of course, there are also tubeless tires that have a smooth bead without grooves. The advantages of tubeless tires are: it has good air tightness, can ensure long-term air leakage, low tire working temperature, long service life, simple structure, light weight, when the tire is perforated during driving, the pressure will not drop sharply, and it can still ensure safe driving, and it will only fail when the tire bursts.

The disadvantage of tubeless tires is that they are difficult to repair on the way. In addition, the self-adhesive layer can only be self-connected and perforated when the perforation size is in a small range, and it is difficult to bond if the size is slightly larger; When the outside temperature is too high, the self-adhesive layer may soften and flow out, upsetting the balance of the tire.

Nowadays, most cars are tubeless. That is, the outer tire is directly set on the outer steel ring of the steel ring. Just cheer up. Such tires are still relatively good to use now.

Tubeless tires have the advantages of good air tightness, good heat dissipation, simple structure and light weight. The disadvantage is that it is more difficult to repair on the way. The wide-section wheel is improved, and the center of gravity of the vehicle is required to be reduced, and the handling performance is improved, which requires the lateral stability of the tire and the adhesion to the road surface to ensure the safety of driving at high speed, so that the emergence of low-section tires has become an inevitable trend.

The ratio of the cross-sectional height (h) to the cross-sectional width (b) of the tire (h b) is an important parameter representing the structural characteristics of the tire, which is called the height-to-width ratio of the tire, and some people call it the flat ratio. Since the 20s of the last century, the outer diameter of the car tire has been reduced by 25%, the rim diameter has been reduced by 35%, the width of the tire and rim has nearly doubled, and the height-width ratio of the tire has been decreasing.

1. There are inner tube tires.

1.Advantages: good load-bearing: it can well carry the weight of the car body, so that the vehicle can drive stably.

Cushioning: It can reduce the impact force received by the car during driving and make the vehicle driving stable; At the same time, it is an important component of the car body composition, which can improve the kinetic energy of the car; As a result, the noise generated when driving is reduced.

2.Shortcoming. Wear and tear: Due to the strong contact between the tire and the ground, the tire is highly susceptible to wear and tear, especially when the road surface is in poor condition.

Low safety: Due to the extreme pressure on the tires, when the friction is heated after long-term use or when encountering bad car conditions, the incident of tire bursts often occurs, and the safety is low, which may pose a threat to the safety of the owner.

2. Tubeless tires.

Merit. High safety: Tubeless tires do not have inner tubes due to friction and heating, which reduces the possibility of puncture.

Fuel saving: Due to the use of tubeless tires, the tires are used with less friction and less traction required by the engine, so less oil is needed and fuel consumption is reduced.

Environmentally friendly: Due to low fuel consumption, less exhaust gas is generated, which causes less pollution and is more environmentally friendly.

2.Shortcoming. <>

The advantages of tubeless tires are as follows:

1. Good safety: When the vehicle is driving, due to the friction between the inner tube and the outer tire, a lot of heat will be generated, and the heat dissipation is not sufficient, which can easily lead to a puncture. Because there is no inner tube, there is no friction between the inner and outer tires, and the heat can be directly dissipated through the rim, and the heat dissipation performance is good, which can greatly reduce the probability of puncture;

2. Tubeless tires leak quickly after being punctured, while tubeless tires leak slowly after being punctured due to a layer of inner lining made of special butyl rubber mixture. In addition, the outer side of the bead of the tubeless tire is attached with a rubber sealing layer with a thickness of 2 3mm specially used for air sealing, which greatly improves safety;

3. Good economy: tubeless tires have no inner tubes, reasonable structure, light tire weight, and low rolling resistance. Tests have shown that tubeless tires have a 10% reduction in rolling resistance, resulting in fuel savings of 2% to 3%.

Tubeless tires prolong the service life of tires due to their relatively uniform grounding pressure and uniform tire wear;

4. Good environmental protection: tubeless tires have a large grounding area and uniform pressure, which can reduce the damage of tires to the ground; Low rolling resistance reduces vehicle emissions. Tubeless tires eliminate the need for inner tubes and pads, reducing the consumption of production and transportation resources.

Tubeless tires have a long service life and reduce the environmental pollution caused by large quantities of discarded and disposed of tires.

Tubeless tires are actually tubeless tires, also known as vacuum tires. The inside has an airliner made of synthetic rubber, which is equivalent to using the compressed air body inside the tire as the inner tube. Therefore, the outer tire also takes into account the function of the inner tube.

Nowadays this type of tire is more common. What are the pros and cons of this tubeless tire?

Pros:1From a structural point of view, because tubeless tires no longer use inner tubes, the friction between the inner tube and the outer tire can be eliminated, and its internal air body is directly charged from the outer tire into the interior and stored by the outer tire, so the overall heat dissipation performance of the tire is more excellent, and the heat can be dissipated directly from the rim, and the heat dissipation performance is more than 20% higher than that of ordinary tires.

2.In addition, since the rubber pressure on the outer surface of a tubeless tire increases after it is inflated, the pressure on the inner surface also increases at the same time, which equates to an increase in the self-sealing ability of the rip. After the inner tube of an ordinary tire is punctured, the whole tire will be deflated quickly, but tubeless tires can still be used for one or two hundred kilometers.

3.Finally, the tubeless tire structure is simple and lightweight, and the burden is low, which is conducive to the long-term use of the tire and the high-speed driving of the car.

Disadvantages: Tubeless tires have a simple structure, but they are troublesome to maintain. This is mainly due to the fact that the self-adhesive layer can only perforate itself in the range of a small perforation size.

Once the perforation size is slightly larger, it is difficult to bond, and if the outside temperature is too high, this self-adhesive layer is easy to soften, which affects driving safety. In fact, tubeless tires still have more advantages overall, which is why they are widely used.

1. Security is different.

The surface of the vacuum tire is a layer of rubber, and the surface tension increases after inflation, forming a certain pressure.

2. The wear resistance is different.

Vacuum tire ring is larger than ordinary tire blind and ring diameter, because there is no inner tube and lining, the tire and the mill track rim are sealed as a whole, the vehicle is driving at high speed, due to the high temperature generated by the friction between the tire and the road, the tire temperature is quickly reduced by direct heat dissipation through the steel ring inside, so as to prolong the service life of the tire.

3. Comfort is different.

Vacuum tires have strong adhesion, especially radial tires. It can maintain good driving stability and less friction, which is conducive to shock absorption and increase vehicle speed. The belt speed layer has high positioning, the radial runout of the wheels is small, and the drag is small, so it is more fuel-efficient.