What does the red dot mark on a tire mean and what do the red and yellow markings on a new tire mean

The red dots represent the position where the longitudinal rigidity of the tire is maximum. What are the best suspension parts for a car? Is it a high-tech shock absorber, or is it an advanced suspension system?

No, it's tires. When the tire rotates on the ground for one round, it is subjected to unequal vibration force at each angle, this phenomenon is called RFV, when the REV value is too large, the tire will vibrate, affecting the driving comfort. The yellow hollow dot is called the tire light mark, which indicates that this position is the lightest part of the tire circumference, and when replacing the tire, this part must be aligned with the valve at the heaviest position on the tire steel to maintain the best balance of the wheel during driving.

Matters that should be paid attention to when installing tires 1. Yellow dots on the sidewall of tires There is a red dot and a yellow dot on each tire, and you will find that the red dot is solid and the yellow dot is hollow. So what do these two points mean? What should we pay attention to when installing new tires?

The solid red dot is the position of the largest longitudinal rigidity of the tire, to put it bluntly, the solid red dot is the point where the tire vibrates the most when it rotates a circle, and the tire will vibrate when the vibration value is too large, so a good manufacturer will not let it leave the factory if it is found that the vibration value exceeds the standard when the new product comes out for testing. This red dot doesn't mean much to the sales department and users because they can't know its value. The hollow yellow dot, also known as the tap mark, indicates that the part is the lightest part of the tire's full circumference.

As we all know, the "car wheel" is actually composed of three parts, namely: tires, wheels and valves, because the wheel hub should be "long" valve, so the position of the valve on the wheel hub will be the heaviest point on the full circumference of the wheel, and if the heaviest point on the wheel hub is facing the lightest point on the tire, then they will play a complementary role, which will make the "car wheel" more balanced. Therefore, the correct way to install the tires is to place the valve directly against this hollow yellow dot.

Second, the pattern with the direction sign should be installed in the direction of the sign Some tire patterns are considered to be directional or asymmetrical in the design from the perspective of special needs, and should be installed strictly according to the direction signs, otherwise it will bring trouble to driving, such as the decline in handling performance, braking performance, drainage function and so on. When installing tires with symmetrical patterns, the sidewall engraved with the DOT logo should be facing outward, and when installing tires with asymmetrical patterns, if there is a contradiction between the direction of DOT and the pattern, the first thing to consider is the direction of the pattern. Third, the correct way to inflate each tire is marked with the air pressure value of the tire, the correct air pressure value should be 80% of the standard value of the tire - 100% and when you plan to set the air pressure to 80%, do not directly hit the air pressure to the value you want to stop, the correct way to inflate is to install the tire should be inflated to 100% of the specified value of the tire or slightly more than 100%, and then put the air pressure to your required air pressure value.

This not only allows the tire lip and hub to fully engage, but also does a small inspection of the tire before hitting the road.

This white dot is also known as a matching dot. The mating point indicates the position of the lowest radial force on the tire (measured over the entire circumference of the tire). Radial force fluctuations are the result of a combination of radial swing errors and tire stiffness differences, which are caused by uneven thickness of the component materials used.

Radial oscillation deviations cannot be detected on the tires themselves by the workshop equipment. It is only when the entire wheel is assembled that the radial oscillation deviation can be detected using workshop equipment.

On the outer rim of the steel rim, a maximum radial swing error point (high point) is punched out with a punch as a marker.

The markings on the steel rim rim must be aligned with the markings on the tires to ensure optimal fitting. There are no such markings on the aluminum alloy rims.

The red dot is the maximum point of stiffness of the tire.

The yellow dot is the lightest point in the static balance of the tire.

Generally speaking, a solid red dot is a tire.

The position with the greatest longitudinal rigidity, to put it bluntly, is the point where the tire vibrates the most when it rotates once, and the tire will vibrate when the vibration value is too large. Therefore, a good manufacturer will not let a new product leave the factory if it finds that the vibration value exceeds the standard when it comes out for testing.

The hollow yellow dot is called a dot mark, which indicates that the part is the lightest part of the tire's circumference, or the part with the least inertia force. The correct way to install a tire is to place the valve directly against this hollow yellow dot.

In addition, the red and yellow lines of the outer ring of the new tire indicate the color marking line, which is mainly used as a mark mark to distinguish the tire specifications during factory production, and the specification mark of the sidewall shall prevail at the time of purchase.

Since there is no national standard for this, the meaning of the solid red dot is different for each automobile manufacturer. Generally speaking, the solid red dot is the position where the tire has the greatest longitudinal rigidity, and the hollow yellow dot is called the light dot mark, which indicates that this part is the lightest part of the tire's full circumference.

Automobile tires can be divided into pneumatic tires and solid tires according to different carcass structures. The vast majority of modern cars use pneumatic tires. According to the air pressure in the tire, pneumatic tires can be divided into three types: high-pressure tires, low-pressure tires and ultra-low-pressure tires.

Low-pressure tires are commonly used in all types of automobiles. Pneumatic tires are divided into two types: tubeless tires and tubeless tires according to different compositions. Tubeless tires are commonly used in cars.

According to the arrangement of the internal cord layer and buffer layer of the tire, the tire can be divided into two types: radial tire and bias tire. Radial tires are commonly used in automobiles. The sides of the tires are marked.

The red dot is the maximum point of stiffness of the tire.

The yellow dot is the lightest point in the static balance of the tire.

Commonly known as the equilibrium point. When the tires are installed, the yellow dots should be kept in the corresponding position with the valve to ensure the best balance of the tires.

It means that it has not been disassembled since leaving the factory.

Generally, tires will have a solid small red dot, in fact, the solid red dot of the tire refers to the position where the longitudinal rigidity of the tire is the largest, that is, the point where the tire vibrates the most when it rotates once.

Because when the vehicle is moving, the tires will rotate 360 degrees, and the extrusion force of the tires at different angles is also different, and if the vibration value is too large, the tires will vibrate. Therefore, the position of the solid red dot represents the maximum vibration point of the tire, which affects the driving comfort of the vehicle.

Wheel lights, installed on the air pump, a pair of ten yuan, with the same battery as the battery in the watch to generate electricity, as long as the wheel vibrates the light will be on, there are monochrome and color, as well as straight and flashing, car decorations are sold in the place.

Whether it's on the tread of the tires or inside the wheels.

The tire is a particularly important part of the car when it is running normally, so we should always pay attention to the tire pressure and the wear of the tire when we go out. If there is a problem with the tire, it is necessary to repair it in time or even replace it with a new one. We sometimes see red or yellow dots on tires, so what does this red dot mean?

This red dot is the maximum value that represents the longitudinal stiffness of the tire. To put it simply, the red dot is where the tire vibrates the most. As the vehicle rotates around the ground, each position in the tires is subjected to different squeezing forces, which indirectly affects the driving comfort.

The hollow yellow dot is the lightest mark on the tire. The most important point of the wheel hub and the lightest point of the tire can play a complementary role, which can balance the bearing capacity of the entire wheel, and the driving comfort will be better. At the same time, if you want to judge the quality of a tire, in addition to judging from the brand and model of the tire, you can also judge whether the valve on the tire corresponds to the yellow dot.

The red dot is the maximum vibration point of the tire and the position where the longitudinal stiffness of the tire is the largest. When installing tires in a tire shop, this marking should correspond to the lightest point of the wheel to ensure comfort while the tire is on the road. Because the tires rotate 360 degrees when the car is moving, the stiffness and runout of the points on the tires during rotation, as well as the influence of wheel deformation and eccentricity, cause the contact force between the points on the tires and the road surface to change.

This red dot is where the tires vibrate the most during a lap. When the vibration value is too large, the tire will vibrate, affecting the comfort of the tire. Therefore, when testing a new product, if the tire factory finds that the vibration value exceeds the standard, the tire will not leave the factory.

Yes. The yellow and red dots on the tires need to be facing outward. When installing tires, the outward-facing side will be written outside.

The yellow dot position of the tire is the lightest, the red dot is the heaviest, and the yellow and red dots need to correspond to certain locations on the rim. There are some errors in the tire manufacturing process, so the weight of the tire is not equal in each position. Similarly, there are some errors in the manufacturing process of the rim, so the weight of the rim is not the same in each position.

And there will be a hole in the rim for the air nozzle, so the position with this hole is relatively light. Therefore, after changing the tires, the four wheels need to be rebalanced, otherwise the Chuncong wheels may vibrate at high speeds.

The solid red dot indicates the position where the longitudinal vibration of the tire is the largest, that is, this position is the heaviest, which is called the center of gravity.

The tire vibrates during rotation, and this is the point where the vibration is greatest.

Extended Materials. Tires are ring-shaped elastic rubber products that are grounded and rolled on various vehicles or machinery.

It is usually installed on a metal rim, which can support the body, cushion external impacts, achieve contact with the road surface and ensure the driving performance of the vehicle.

Tires are often used in complex and harsh conditions, and they are subjected to various deformations, loads, forces, and high and low temperatures when driving, so they must have high bearing performance, traction performance, and cushioning performance.

At the same time, high abrasion resistance and flexural resistance, as well as low rolling resistance and heat generation are required.

Encyclopedia, tires.

The yellow dot is the lightest part of the tire, the red dot is the most middle part of the tire, and the steel rim is the heaviest at the valve, so the lightest yellow dot of the tire must correspond to the valve of the steel rim to maintain the best balance of the tire.

A test that tires will be carried out at the time of leaving the factory is called: vibration amplitude detection. Because the texture of the tire can not be completely uniform, it is impossible to achieve complete equilibrium, when the high-speed rotation will produce a large or small centrifugal force (scientific name is called longitudinal vibration), if the longitudinal vibration is too large, the tire is unqualified.

Within the qualified range, the heaviest point and the lightest point of the tire are detected by vibration amplitude, the heaviest point is the position with a solid red dot, and the lightest point is the position with a hollow yellow dot.

It is impossible for tires to be evenly weighted, and the same is true for wheels. If the heaviest point of the tire happens to be in the same direction as the heaviest point of the wheel, the centrifugal force of the wheel will be more obvious when the vehicle is driving at high speed, resulting in vibration, regular abnormal noise, steering wheel shake and other phenomena.

So theoretically, when leaving the factory, the tire red dot should correspond to the lightest point of the wheel, and the yellow dot of the tire corresponds to the heaviest point of the wheel, but the possibility that these two pairs of points can be matched is relatively small, so the general new car will prefer to correspond to the lightest point of the wheel hub and the tire red dot (some wheels will be marked with white dots, that is, the lightest point, and some are not marked).

Summary. The red dot is the most middle part of the tire, and the steel rim is the heaviest at the valve, so the lightest yellow dot of the tire must correspond to the valve of the steel rim to maintain the optimal balance of the tire.

The red dot is the most middle part of the tire, and the steel rim is the heaviest at the valve, so the yellow dot with the lightest tire blade must correspond to the valve of the steel rim to maintain the best balance of the tire.

The solid red ridge imaginary point is the position with the greatest longitudinal rigidity of the tire, which means that Sakura is the point where the tire vibrates the most when it rotates a ring of spikes, and the tire will vibrate when the vibration value is too large.

Does the red and yellow circles on the surface of the tire have anything to do with the quality of the tire? Why aren't the 2018 tires?

Since the state does not have hard and fast regulations in this regard, some tires have and some tires do not, but it does not affect the worst.

The 18-year-old tire is not possible, but it is not marked, which does not mean that he does not have these two points, which does not mean that its kinetic energy balance is not good.

Need to check that the brand and specification of the two tires are the same, how to check?

Comparing the brand logo and model on the side of the tire, it is generally mostly the width of the tire, the aspect ratio and the size.

For example, 225 55 r18