Four wheel dynamic balance and four-wheel alignment are common car maintenance items that can often be mentioned. When going to a 4S store for maintenance and reaching 15000 or 20000 kilometers, it is definitely recommended to do four-wheel displacement dynamic balance. There was originally no relationship between displacement and dynamic balance, but 4S stores usually recommend doing it together to prevent any problems after displacement. Working hours can also be charged higher when done together. Today, let's talk about what dynamic balance and four-wheel alignment are? How often do we do it?

Dynamic balancing is aimed at the wheels. When the tire is installed on the wheel hub, there will always be manufacturing errors between the tire and the wheel hub, resulting in the weight of each point on the wheel not being exactly the same. A wheel that is heavy in some areas and light in others will experience shaking when rotating. Just like a fan, all the wings can rotate smoothly without shaking. If one wing is replaced with a different one, which is lighter or heavier than the other wings, it will cause the fan to rotate unstably and shake severely. The rotation of the tire is also based on this principle. If a point is lighter or heavier than the same area on the opposite side, it will rotate unstably. Dynamic balance is the solution to the uneven distribution of mass. How was it resolved? By adding a balance block, if a point is 10 grams lighter than the same area on the opposite side, then adding a 10 gram balance block at that point can achieve the same weight. Dynamic balance is actually finding the lighter point on the wheel and adding a balance block to it. There is a slight imbalance in the wheels, which is generally not noticeable when driving. If the difference is below 10 grams, it is generally not noticeable. If it is above 10 grams, there will be noticeable shaking at high speeds.

Four wheel alignment is not specific to the wheels themselves, but rather to various lengths and positions of the pull rods. A wheel is not randomly installed on a car, it has a certain angle. For example, when tilting outward, the wheels are not actually perpendicular to the ground, they are tilting outward. For example, when the front toe is turned in the right direction, the wheels do not point straight ahead, they are tilted inward, forming an inner eight shape. The formation of the wheel position is determined by the position of various tie rod suspensions, and adjusting the positioning value is to adjust the position of the tie rod or suspension components.

Now that you know what dynamic balancing and four-wheel alignment are for, how often should they be done separately? Simply put, if there is a problem, do it; if there is no problem, there is no need to do it; there is no fixed mileage. The manifestation of imbalanced wheels is the shaking of the steering wheel at high speed, and the manifestation of incorrect positioning is deviation, tire damage, misaligned steering wheel, and failure to automatically return to its original position when driving. As the tires wear out, if they do not slow down due to some potholes, the wheel hub may deform slightly, causing the wheels to become unbalanced. Therefore, sometimes tire repair shops also suggest doing dynamic balancing together to prevent tire shaking. Whenever a tire has been disassembled, it is necessary to remove the tire from the wheel hub and balance it, such as repairing the tire or replacing it with a new one. The frequency of dynamic balancing is relatively higher, and as for four-wheel alignment, it is best not to do it easily. Sometimes, equipment precision and personnel technical issues may cause problems even if there were no problems. Only do it if there is a malfunction in the car, do not take it seriously if there is no malfunction

From: WONDEE Autoparts

2024-5-17