Why should the tires be reversed? How to adjust the tires

There are several reasons for tire realignment:

1. Front and rear wheels.

1.The best order to change the tires after being judged by experts is: right front to left rear, left front to right rear, left rear to left front, right rear to right front. In this way, it seems that only the front wheels are crossed, while the rear wheels are in the same position.

2.The reason should be that radial tires use steel wire as a strap layer, so it is also a factor that we should pay attention to when replacing them. I thought that if I stretched it in the opposite direction, it was very likely that the steel wire and rubber would come off, and it would be unsafe.

The load on the rear wheels is relatively small, and the force is also small, so the same direction exchange uses the buffer time of stretching in the opposite direction, which also reduces the occurrence of accidents.

2. Time regulations.

1.According to the improvement of the quality of the tires now, the time of tire alignment is also different. The book recommends that the tires be reversed once when driving at 8,000-10,000 kilometers, even if there is no wear and tear.

2.Because the alignment of tires helps to reduce tire wear, prolong the life of tires, and also reduce the fate of danger! However, it is best to choose a new set of tires after the specified number of years of use.

3. Expert comments.

Experts said: In the process of modulation, the focus is on the display of the pattern, and it is most reasonable to change the wheel pattern. In the pattern design, water accumulation will be formed in the wide groove and shallow groove diagonal groove due to the existence of groove or groove, and the angle between the groove wall and the bottom of the groove involves the drainage angle.

2.As we all know, in the rain or waterlogged road, the water accumulation of the tread is inevitable, the tire drainage angle has become a key problem, you must know that most of the tire drainage angle is two-way, that is, no matter which direction the tire rolls, the drainage angle is effective, however, some car owners in order to ride more comfortably, in order to enhance the grip of the tire, the drainage angle has been changed, such a drainage angle only in line with the conditions of its forward rotation, there is a good friction and drainage force, when reversed, the drainage angle becomes the water corner.

3.This kind of tire is called a one-way tire, because it will involve the safety of the car, so there are things that should go through strict requirements. There are arrow marks on the side of the one-way tire to warn the installation direction, if it is installed in the opposite direction, it will seriously affect the safety braking, and this one-way tire can only be changed forward and backward but not diagonally.

When braking, the weight of the whole car will move forward, and if the car is front-wheel drive, the weight of the front-wheel steering system and the drive system will be concentrated in the front half of the car. The tires of the front wheels of the car wear out faster than the rear tires, so they should be switched regularly. The front half of the car bears the most weight, so the front tires of a car wear out faster than the rear tires, and in general, the front wheels of a front-wheel drive car wear out twice as fast as the rear wheels.

In order to make the tires more durable and the car ride smoother, most of the tires are regularly switched to balance the wear rate of the front and rear wheels, which can not only stretch the service life of the tires to the maximum, but also keep the tread of the two groups of tires in the best condition, so that one group is still good and the other group has been polished.

Five habits to extend tire life:

First, do the habit of checking the tire pressure at any time. Air pressure is the key to extending the life of your tires – often exceeding 20% of normal air pressure, reducing the life of your tires by 10%; If the air pressure is constantly lower than 30% of normal air pressure, the tire life will be reduced by 52%.

Second, the air pressure must be consistent. Tire pressure is the life of the tire, the air pressure is too low, the carcass deformation increases, the sidewall is prone to cracks, and at the same time leads to excessive heating, which promotes the aging of rubber, fatigue of the cord layer, and breaking of the cord.

3. The habit of regularly removing foreign bodies in tires. When the vehicle is driving on the road, there are often some stones squeezed into the tread gap of the tire. If these small stones are not removed in time, they can puncture the tire over time, resulting in a flat or puncture.

Fourth, the driving habits meet the scientific requirements. When driving on the road with a large camber, it is necessary to drive in the center as much as possible to avoid and reduce the shift of the center of gravity of the car, and reduce the uneven wear of the tire due to the increase of the tire load on one side.

5. Keep the front and rear wheels accurately oriented. Front wheel alignment has a significant impact on the service life of tires, especially front-wheel toe and front wheel camber. The camber of the front wheel mainly accelerates the wear of the shoulder, that is, eccentric wear; The toe-in of the front wheels mainly accelerates the wear of the inside and outside of the tire.

After a period of driving, the car tires should be changed to ensure that the wear of the four tires (even spare tires) is consistent, and the basic principle of replacing tires is: a single tire is used in a timely manner to "flange".

The correct way is:

1, front-wheel drive car, left front wheel to left rear wheel, left rear wheel to right front wheel, right front wheel to right rear wheel, right rear wheel to left front wheel; If you change it with the spare tire, the left front wheel is rotated to the left rear wheel, the left rear wheel is rotated to the right front wheel, the right front wheel is rotated to the spare tire, the right rear wheel is rotated to the left front wheel, and the spare tire is changed to the right rear wheel.

2. Rear-wheel drive or four-wheel drive vehicles, the right rear wheel is rotated to the right front wheel, the right front wheel is replaced by the left rear wheel, the left rear wheel is replaced by the left front wheel, and the left front wheel is replaced by the right rear wheel; If you change it with the spare tire, the right rear wheel is rotated to the right front wheel, the right front wheel is rotated to the left rear wheel, the left rear wheel is rotated to the left front wheel, the left front wheel is rotated to the spare tire, and the spare tire is changed to the right rear wheel.

The correct method of tire alignment needs to be decided according to the pattern of the tire, if it is an asymmetrical pattern or a single guide pattern, it can only be reversed before and after, and can not be cross-adjusted, because the asymmetrical pattern and the single guide pattern have a clear installation direction.

If it is a symmetrical pattern, it also needs to be decided according to the driving mode:

Rear-wheel drive vehicles: non-driven wheels are changed diagonally, left front to right rear, right front to left rear. The drive wheels are changed vertically, right rear to right front, left rear to left front.

Front-wheel drive vehicles: non-driven wheels are changed diagonally, right rear to left front, left rear to right front. The drive wheels are replaced vertically, right front to right rear, left front to left rear.

Four-wheel drive vehicles: vertical front and rear change, left front to left rear, right front to right rear.

Precautions for tire readjustment.

For vehicles with new tires, the tires are generally adjusted every 8,000-10,000 hours, and if the tread is found to be unevenly worn, it is necessary to adjust the front and rear wheels as soon as possible. However, if the front and rear tires of the vehicle are of different specifications, the front and rear wheels cannot be replaced.

Special attention is required when the directional pattern of the tire is aligned. Carefully observe the arrows displayed on the sidewall indicating the forward direction of wheel rotation, and make sure that the tire rotation direction is correct after adjustment. Usually the air pressure of the front and rear tires is different, and you should adjust the air pressure according to the position of the tires after the tire is adjusted.

According to the different driving habits and driving routes of the driver, the tire should be changed regularly with reference to the maintenance manual that comes with the car. The tire rotation interval is generally 10,000 km for new vehicles, and the tire rotation is carried out every 5,000 km to 10,000 km after driving.

Tire rotation should adopt different rotation methods according to the different characteristics of tires.

1) Transposition of tread non-directional bias tires. Since the front wheel is worn heavier than the rear wheel when the tire is in use, the tire on the same axle can be swapped to make the left and right sides of the tire wear evenly. After a period of use, the replaced tires on the front axle can be scrapped, retreaded or used as spare tires, while new tires are installed on the front wheels.

It is more economical to do so.

2) Transposition of radial tires. Radial tires should be kept on the same side of the vehicle, i.e. in the same direction of rotation. The rotation direction of the radial tires is fixed, and if the direction of rotation is reversed, the vehicle will lose its handling stability, make the car unsmooth and vibrate.

If you use a symmetrical pattern, you can cross it back and forth; If it is an asymmetrical pattern or a one-way pattern, it can only be reversed before and after; There are also some models with different sizes before and after, so you can't go wrong.

That is, the front wheel is installed to the rear wheel, and the rear wheel is installed to the front wheel, but if you want to switch it, you have to go to the car repair shop, the ordinary one.

Hello, I am glad to answer for you: it is not cost-effective to adjust the tires, and it will add a lot of unnecessary troubles and safety hazards. Tire performance degradation and wear are normal, we recommend regular inspection to a professional maintenance center, according to the actual situation to choose a balanced side four tires or replace with new tires.

Fourth, the safety of tires directly affects the safety of you and your family, please don't be negligent about this. It is not recommended to adjust the tires for the following reasons:1

The performance and mileage of tires will be unevenly reduced due to different uses, and the best handling performance cannot be achieved after adjustment. The service life of tires is limited by mileage, and the mileage decay rate is faster when driving on highways, which will affect the safety of tires. 2.

The wear and tear of tires is different due to the different driving environment, and the uneven wear of tires will have safety problems after adjustment, which will affect the driving stability of the vehicle. 3.The tread and tread rubber on the tires are designed according to their respective installation positions, and the reversal will reduce the grip and braking ability of the tires, which has certain safety hazards.

4.Adjusting tires increases the chance of asymmetrical tread wear, accelerates uneven tread wear, and shortens tire life. In severe cases, it will also affect driving comfort and handling accuracy.

5.Some models with high-performance engines and suspension systems will make special requirements and optimization for the direction of tire operation in the design, and adjusting the tires will affect these optimized designs and make the performance unable to give full play. 6.

The direction of operation will be marked on the tire, and the deviation will increase the safety risk if it is not labeled, and it will also affect the vehicle warranty during the new car warranty period.

Not all tires are not cross-aligned, and cross-alignment is not possible when the tire pattern is asymmetrical or single-guided, as they have a clear mounting angle when assembled.

When the tire is asymmetrical, "outside" indicates both sides and "inside" indicates the inside; The arrow symbol on the single-guided tread tire indicates that the arrow symbol must be consistent with the tire flip orientation, so the asymmetrical tread tire and the single-guide tread tire are only reversed from front to back, left and right.

When the vehicle tire is a symmetrical pattern, it can be crossed or front and rear left and right adjustment, and the actual tire alignment order must also be decided according to the driving form. Front and rear wheel drive: non-drive wheel top angle conversion, left front to right rear, left front to left rear.

The drive wheel is vertically replaced, right rear to left front, left rear to left front.

Front-wheel drive vehicle: non-drive wheel top angle conversion, right rear to left front, left rear to left front. The drive wheels are vertically replaced, and the front left to the right rear, and the left front to the left rear. Four-wheel drive vehicle: vertical front and rear left and right disassembly, left front for left rear, left front for right rear.

Tire maintenance methods

1. Do a good job of four-wheel alignment and tire rotation: Four-wheel alignment and tire rotation are carried out once after every 10,000 kilometers.

2. Check the tire pressure frequently: Tire maintenance also includes regular check of the air pressure, tires that exceed the specified air pressure will greatly reduce the service life of the tire, and tires below the specified air pressure will cause the braking effect to deteriorate, steering difficulty or heavy steering, and will also reduce the service life of the tire.

3. Always pay attention to the marking line on the tire: the tire wear mark is located in the main drainage groove of the tire, which is a trapezoidal Yulukai rubber boss. When the tire pattern is worn to the level of the wear mark, the tire must be replaced.

During the rainy season, in order to prevent the vehicle from skidding on waterlogged roads, the tire tread depth must be maintained at least 3mm.