Should Shock Absorbers Be Replaced Individually or in Pairs?
2 Answers
Shock absorbers should be replaced in pairs. They are used to dampen the oscillations from the spring's rebound after absorbing shocks and to mitigate impacts from the road surface. The reasons for replacing shock absorbers in pairs are: 1. Shock absorbers from different batches may have varying hardness levels; 2. There can be significant performance differences between old and new shock absorbers; 3. In emergency situations requiring sudden steering, if the shock absorbers have different elasticity, it may increase the risk of vehicle rollover. The functions of shock absorbers include: 1. Buffering the movement of the vehicle's center of gravity and conserving energy; 2. Reducing wind resistance and lessening the impact of changes in the vehicle's center of gravity on the tires. The steps for replacing shock absorbers are: 1. Remove the shock absorber along with the spring, then use a spring clamp to secure the spring; 2. After replacing the shock absorber, release the spring clamp and reinstall both components together.
I previously encountered a situation where one shock absorber was broken, and I only replaced one. As a result, the car drove with one side stiff and the other soft, feeling like it was about to take off when driving over bumps—extremely jarring. Later, the mechanic told me that this was a big mistake. Shock absorbers should be replaced in pairs because the weight and wear on both sides are generally synchronized. Having one old and one new can lead to unstable handling, faster tire wear, and may even affect the lifespan of the suspension system. Now, I always insist on replacing them in pairs, and the car feels much more stable to drive—just like how wearing new shoes requires replacing both for balance. Safety is also crucial; an imbalance can easily cause the car to veer at high speeds or during turns, significantly increasing risks. If budget is tight, prioritize replacing the side with the most severe issues, but in the long run, replacing the entire set is more worry-free. Remember to regularly inspect suspension components to prevent trouble.
