Do You Have to Replace a Whole Set When One Shock Absorber Fails?
3 Answers
When one car shock absorber fails, it is necessary to replace the pair together. Definition of Shock Absorber: The car shock absorber (including the shock spring) is the most crucial component in the vehicle's vibration filtration system. Function of Shock Absorber: It absorbs the vibrations and impacts generated by uneven road surfaces while the vehicle is in motion, thereby providing a comfortable ride for passengers. Hazards of a Damaged Shock Absorber: Once a shock absorber is damaged, the vehicle will experience excessive bouncing and instability during driving, which can significantly impact driving safety in severe cases.
Actually, I've encountered situations where shock absorbers failed when I used to repair cars myself. Generally speaking, it's best not to replace just one. If the left and right shock absorbers are of different ages, their support capacity and response speed will vary, which may cause the vehicle to pull to one side or exhibit noticeable steering wheel vibration at high speeds. Over time, the newly replaced shock absorber will bear greater stress, making it prone to premature failure, and it may also accelerate the aging of suspension components on the other side. Although replacing just one is cheaper initially, it might end up costing more in the long run to replace other parts. To save both money and hassle, I recommend getting a thorough inspection at a reliable auto repair shop and replacing them as a pair. This ensures better vehicle balance and extends the overall lifespan of the suspension system.
Driving safety is paramount. Never cut corners by replacing just one shock absorber when it fails. Performance differences between old and new shock absorbers can cause instability during turns or body sway, making loss of control more likely on wet, slippery roads. I know a friend who replaced only one, resulting in the car spinning during high-speed braking—nearly causing an accident. Additionally, shock absorbers with different lifespans will cause uneven force distribution on both sides of the tires, leading to the need for new tires much sooner. Taking risks for temporary savings isn’t worth it. If possible, have the repair shop conduct a full inspection and replace them with the correct brand and matching model for the safest outcome.
