One side of the shock absorber had a problem and was replaced with a new one. As long as the other side of the shock absorber is not damaged, there will not be much difference between the old and new shock absorbers, and there will not be a situation where one side vibrates more and the other side vibrates less. If the road conditions are good during normal driving, there is no need to frequently drive on rough roads; When the mileage of the car is not too high, only one needs to be replaced, there is no need to replace both sides.

 
However, if we have to pass through many speed bumps every day and the speed is very fast. Or if the car frequently runs on bumpy or rough roads with a high mileage, it is best to replace both left and right vehicles at the same time. Because the damage to the shock absorber is closely related to this type of driving, the performance of the shock absorber will deteriorate significantly. If only one is replaced, there will be a significant difference in hardness between the two sides, with one side being higher and the other lower, which will affect the stability of the vehicle.

In addition, the principle of hydraulic shock absorbers is that the liquid passes through a one-way damping hole. When damping, the piston compresses the hydraulic oil, and the oil flows through a damping hole to produce a damping effect, achieving the goal of reducing or eliminating vibration. The shock absorber on a car is not used to support the weight of the body, but to suppress the vibration of the spring during rebound and absorb the energy of road impact.

When a car is running at high speeds, there is a high demand for stability. If only one is replaced, there will be some loss of oil in both the spring and shock absorber rod due to their use for a period of time. If not replaced, the consistency with the newly replaced one will be poor, which will have a significant impact on driving safety.

A car shock absorber is broken, whether to replace it in pairs depends on personal driving needs and habits. If the road conditions you usually drive on are good, you are not driving fast by yourself, and the mileage of the car is not high, you can only replace the damaged one. If you often drive on rough roads or drive at a fast speed with a large mileage, it is still recommended to replace both sides at the same time.