Are the patterns on car tires designed for safe driving?

The various patterns on the tires of the car are not decorative, but specially designed to ensure the safe driving of the car.

If the car is only driven on dry roads, the tires can also be free of patterns, as is the case with racing tires. However, when it rains, tires without patterns are easy to slip, and the car will be wobbly when it starts, and it will not be able to stop in time when you want to stop. This is due to the formation of a thin film of water between the road surface and the tire, which reduces the friction between the tire and the road surface.

If there is a pattern on the tire, this will not happen because the water will drain out of the groove of the tread, and there will be no water film between the tire and the ground, and the tire will still be tightly attached to the ground, so it will not slip easily.

In addition to ensuring that the vehicle can drive safely in rainy days, the pattern on the tires also has some other functions. For vehicles driving in the city, the tire pattern is generally straight and zigzag. This pattern not only allows the car to drive safely on the asphalt road, but also helps to eliminate the noise when the car is running, so it is called the silent pattern.

Vehicles driving in the wilderness have deep and wide patterns on the tires that "gnaw" tightly on the road, and even when driving on snow, they are not easy to slip.

In order to increase the friction so that the car can be braked when braking, if there is no pattern and the tires are slippery, it will not stop at all.

Highway pattern is the earliest and most common one. The universal pattern is suitable for use on hard roads, and it is divided into transverse patterns, longitudinal patterns and zigzag patterns, which are mostly installed on buses and city cars, and can also eliminate noise, so it is also called silent patterns.

<> driving road conditions are not the same, SUV, and off-road models, the tire pattern is relatively large, which can effectively improve the grip, increase the ability to get out of trouble, sedan models, tire pressure will be relatively small, which can effectively reduce the noise in driving, improve the driving pleasure The pattern on both sides of the tire is the same or similar, which has more or less an impact on reducing the rolling resistance of the tire, fuel saving is one of its advantages, and the silence and comfort will be better than other tread structures. The disadvantage is that symmetrical tread tires have less grip and less sporty performance. Deep pattern, many patterns, strong tire grip, suitable for off-road type, shallow pattern, less pattern, less tire noise, suitable for cars, good comfort.

The tread of the longitudinal pattern is longitudinally continuous and transversely disconnected. The longitudinal stiffness of the tread is large, the transverse stiffness is small, and the anti-slip ability shows transverse strength and longitudinal weakness. The tread of the transverse pattern is transversely continuous and disconnected longitudinally.

The transverse stiffness of the tread is large, and the longitudinal stiffness is small. The normal pattern is suitable for use on hard pavement. It is divided into longitudinal patterns, transverse patterns, and both vertical and horizontal patterns.

The common feature of the longitudinal pattern is that the tread is longitudinally continuous and transversely disconnected. The common feature of the transverse pattern is that the tread is transversely continuous and longitudinally disconnected.

The ground contact area of the pattern block is relatively small (about 40% to 60%). When driving on soft roads, a part of the soil will be embedded in the groove, and this part of the soil embedded in the groove must be sheared before the tire may slip to prevent the wheel from slipping, which is exactly the same as the sole pattern. The tire pattern improves the elasticity of the tread to the ground.

Under the action of tangential forces between the tread and the road surface, such as drive, braking and transverse forces, the tread block can produce a greater tangential direction.

In the process of draining the wheels at high speed in rainy days, a water film effect will be created between the tires and the road surface when the car is driving. Tire drainage mainly relies on the pattern and groove of the tire to drain the water, and the water is excluded from its pattern through the pattern on the tire to ensure the driving of the vehicle.

Just like why the sole should be patterned, the pattern on the surface of the car tire increases the friction between the wheel and the ground, thereby shortening the braking distance and reducing the occurrence of car accidents. Therefore, when the pattern of the wheel is worn to a certain extent, it must be replaced.

The main purpose of designing these patterns is also to ensure that we can drive better on the road surface, and it can also play an anti-skid role, especially in winter, which can effectively avoid traffic accidents and make the driving process safer.

These patterns are designed to increase the friction between the tire and the ground, and without them, the braking distance would have been at least doubled.

<>1. Inconsistent patterns will affect safety.

2. The risk coefficient of different patterns of tires used in the front and rear wheels is greatly enhanced, and different patterns will have the same friction coefficient and different directions of drainage, which will cause uneven force on the front wheels, and in the case of high-speed driving, a small force will cause a big change.

3. The tire is one of the most important components of the car, and its main functions are: supporting the full weight of the vehicle and bearing the load of the car; Transmit the torque of traction and braking to ensure the adhesion between the wheels and the road surface; Reduce and absorb the vibration and impact force of the car when driving, prevent the auto parts from being damaged by severe vibration and early opening period, adapt to the high-speed performance of the vehicle and reduce the noise during driving, and ensure the safety, handling stability, comfort and energy-saving economy of driving.

The role of the car tire pattern is to increase the friction between the tread and the road surface to prevent the wheel from slipping, if the wheel and tire have no pattern, it has little friction with the ground, and it is easy to slip, so in order to increase the friction between the wheel and the ground and ensure driving safety, the tread is designed with a variety of uneven patterns, which are the same as the patterns on the bottom of the shoes.

The car is supported by tires on the road surface, and the tire pattern is in direct contact with the road surface. When the car is driving on wet or muddy roads, if the wheels and tires are not treaded, it has little friction with the ground and can easily slip. Therefore, in order to increase the friction between the wheel and the ground and ensure driving safety, the tread is designed with a variety of uneven patterns, which are the same as the patterns on the bottom of the shoe.

The car is supported by tires on the road surface, and the tire pattern is in direct contact with the road surface. When the car is driving on wet or muddy roads, if the wheels and tires are not treaded, it has little friction with the ground and can easily slip. Therefore, in order to increase the friction between the bright wheels and the ground and ensure driving safety, the tread is designed with a variety of uneven patterns, which are the same as the patterns on the bottom of the shoes.

The most primitive tread pattern is actually very simple, just some straight lines. However, with the continuous change of road conditions, vehicle speed, load and other conditions, the tire pattern has become more and more complex after more than 100 years of development and improvement.

What kind of car, what kind of road, what kind of tires are used. Generally speaking, the common patterns of tires are divided into three categories: normal patterns, off-road patterns, and combination patterns.

The general mode, also known as the highway mode, is the earliest and most popular mode of Danqi. The general mode is suitable for hard pavement. It is divided into horizontal, vertical and zigzag, which is mostly installed on buses and city cars, and can also eliminate noise, so it is also called silent type.

The off-road pattern groove is wide and deep, and the ground contact area of the gobo block is relatively small. It is not easy to get stuck in stones, hide soil, and slip when driving. It is a tire pattern specially designed for vehicles driving in the wilderness and soft ground, so it is especially suitable for tractors, tractors and other vehicles with high requirements for traction and ground grip.

The joint model is a transitional model between the ordinary model and the transnational model. It is suitable not only for good hard roads, but also for gravel, slush and soft roads. Its adhesive properties are better than ordinary patterns, but the abrasion resistance is slightly worse.

Currently, some trucks and four-wheel drive passenger cars often use tires of this model.

It is also worth noting that with the extension of use, the tread pattern will gradually wear out, and the performance will gradually decline. Therefore, the depth of the tire tread should be checked regularly to avoid skiddling on wet roads. In addition, all tires have tread wear replacement warning markings on the grooves.

When the tread depth is only, the markings will appear automatically, but it is best not to wait for the markings to appear before changing the tires, which can reduce the possibility of danger and drive safely.

Photo by Pacific Automobile Network Q&A).

1. The most important effect is anti-skid, of course, with the requirements for tire function getting better and better, many patterns also have the role of stone discharge and drainage, the longitudinal pattern of the tire bucket has a guiding role, and the transverse pattern is generally to increase the driving force. If the ground is as flat as glass, under the same material, it is the smooth tire that has the most friction. However, the road surface cannot be so smooth, there are always some roughness and concave and convex, and the wheels are deformed under pressure and are in contact with the ground.

In this way, the pattern matches the roughness of the ground.

2. In addition, it will rain and there will be water on the ground. When the car is running at high speed, a layer of "water film" will be generated between the stagnant water and the moving wheels, which will cause the wheels to slip. Therefore, to drain the water, or to squeeze out the water, the pattern plays the role of hitting the hail of this "laughing sail tank".