I usually go for maintenance, and when I reach 10,000 kilometers, I will be advised to do the wheel adjustment. The wheel is also called four-wheel transposition, that is, the four wheels are reversed, and the general 4S shop recommends that 10,000 kilometers need to be transposed once, and it is also recommended that the wheel dynamic balance be balanced when transposing. Why do you have to tune the wheels so often?Is it possible to disalign it?Is there any benefit to being reversed?
The purpose of the four-wheel rotation is only one, which is to make the wear of the four tires more even, prolong the service life, and maintain the best performance of the vehicle, mainly grip and braking effect. Some maintenance manuals will also state that it is dangerous to have inconsistent tire wear, and that the four-wheel rotation is to balance the tread wear to maintain good handling and braking performance, and if inconsistent wear is formed, the tire should be rotated every 10,000 kilometers or less. Therefore, the transposition is also the manufacturer's suggestion, which is a maintenance project, not a random recommendation by the 4S store.
So why do the four tires wear unevenly?Because of their different forces, the front tires are generally more worn than the rear tires, about twice the wear rate, that is to say, if they are not transposed, they are worn to the limit, the front wheels are replaced twice, and the rear wheels need to be replaced once. The front wheels are the driving wheels, and the front wheels provide more grip when the vehicle is moving, especially when starting, and the friction with the ground is the greatest, so the wear is more serious. The rear wheels only need to run with them, and they don't need to bear too much friction.
The front wheel is a steering wheel, and the wear of the front wheel is more serious when steering, especially when reversing into the garage, turning around on a narrow road, etc., the front wheel turns left and right in the same place, and the wear is very large, and the wear and tear of the in-situ direction is much greater than when moving. The rear wheels, on the other hand, only need to be moved back and forth for short distances, with minimal wear. In addition, when the engine is placed in front, the pressure on the front of the vehicle is greater, and the pressure between the tires and the ground is greater, and the friction is also greater and there is more wear. In addition, because of inertia during braking, the center of gravity of the vehicle moves forward, and most of the braking force is concentrated in the front wheel, and the front wheel tires are bound to wear out seriously. It can be seen from the frequency of changing the brake pads, the front wheel can be changed two or three times, and the rear wheel can only be changed once, obviously the front wheel carries the main brake function, if you want to brake, it must have a large friction with the ground, and there will be more wear.
All of the above is to explain that the front wheels are more worn than the rear wheels, and if there is an inconsistent wear, the best handling and optimal braking performance of the car cannot be brought into play, so it is necessary to change positions regularly to avoid inconsistent wear. In addition, the timely rotation can also extend the life of the tires, and the economy is better. How do you change positions?The front wheels are changed in parallel to the rear wheels, and the rear wheels are crossed to the front wheels, that is, the left front to the left rear, the right front to the right rear, the left rear to the right front, and the right rear to the left front, which is the most commonly used transposition method and is suitable for the vast majority of vehicles. However, if it is a one-way tire can not be crossed, can only be translated forward and backward, if the front and rear wheel specifications are not the same, can not be reversed before and after, can only be changed left and right, if the tire is injured or made up several times, then it is not recommended to put it on the front wheel, in short, according to the actual situation to change.
After transposition, you also need to pay attention to whether there is a tire pressure sensor in the tire, if there is, you need to do tire pressure learning, if you don't do it, there will be a tire pressure display error, the tire pressure light may also be on, the tire pressure learning method is different for each car, and it needs to be done by maintenance personnel. Do I need to do a dynamic balance when transposing?Depending on the situation, if there is a bit of high-speed jitter itself, or if a wheel has been squeezed, you need to do balancing. If there is no abnormality in the usual driving, then only the position needs to be transposed, and there is no need to do dynamic balancing. Can you extend the number of kilometers of transposition?If you usually drive less and do not have the habit of violent driving, it is also possible, and it can be extended to 15,000 kilometers to change once. You can go to a small repair shop near your home, there is no technical difficulty, and the charge is not expensive.