Look at the mileage of the old card is about to be maintained again! Let’s do a four-wheel transposition by yourself today. Think about it carefully, it has been more than 2W kilometers since the last transposition ~ it’s time to move!
Let’s popularize science first!
Four-wheel transposition, that is, to adjust the four wheelsets, the vehicle maintenance manual also wrote how many kilometers to do. The purpose of four-wheel transposition is to make the four tires wear evenly, prolong the service life of the tires, and always maintain a balanced grip and braking force.
In daily driving, there is a difference in the degree of wear between the front and rear tires. the wear of the front tire is twice as much as that of the rear tire. this is because the center of gravity of the car moves forward when braking, exerting more pressure on the front wheel, the friction of the front wheel is greater, and most of the braking force is borne by the front wheel. The front wheel will wear more seriously. The normal suggestion is a transposition of 10,000 to 20,000 kilometers.
There are two methods of four-wheel transposition, the most commonly used is the cross of the rear wheel to the front wheel, and the front wheel is parallel to the rear wheel, that is, from left back to right front, right back to left front, left front to left back, right front to right back. In this way, after three transpositions, each tire has been in four positions, and the wear will be more uniform. The second method is cross-transposition, so that a tire can only stay in two positions, and the two positions are always exchanged with each other.
There are still several problems with transposition, that is, the front and rear tires of different sizes can not be transposed forward and backward, only left and right. One-way tires can not be crossed, but can only be transposed in parallel. In addition, if the tire is injured, no matter how you change the position, you’d better not put it on the front wheel.