Why shocks and struts are replaced in pairs
When one shock absorber or strut is worn out and the shop recommends replacing both on that axle, it can sound like an upsell. Usually it is not, and the reasoning is worth knowing.
A shock or strut controls how quickly a wheel moves up and down. The two on an axle work as a pair: when the vehicle hits a bump, leans into a turn or dips under braking, they share that motion between the two sides.
Put one new part next to one worn part and they no longer behave alike. The new side controls the wheel firmly; the worn side lets it move more freely. The vehicle can lean, dip or settle unevenly, and under hard braking or a sudden swerve, one side of the axle grips and responds differently from the other. That is not a comfort problem. It is a handling problem in exactly the moments that matter.
Both parts on an axle have also covered the same miles on the same roads. If one has failed, the other is rarely far behind.
What usually goes in pairs, and what does not
Pairs, per axle: shocks, struts, and springs.
Individually, as needed: many other parts, such as a single worn ball joint, tie rod end or bushing, are replaced on their own when they are the part that has failed.
A good estimate says which is which. If it is not clear, ask.
Signs worth booking for
- Bouncing that continues after a bump.
- The vehicle leaning noticeably in turns.
- A clunk over bumps or when turning.
- Patchy, scalloped wear around a tire.
Worn suspension upsets the alignment, so align after suspension work. A front end that dives hard also loads the brakes. Both are here. The national suspension repair page covers the warning signs in more detail.
This is the Commercial & Consumer listing; the Phoenix city page explains the others.
About this store
The Phoenix store runs eighteen services and is managed by Patrick Taylor.
See the national suspension repair page for all 34 locations.