Posted on 8/28/2026
Shocks and struts both control suspension movement, but they are not the same component. A shock absorber mainly controls spring motion, while a strut also serves as a structural part of the suspension and helps support wheel alignment. Drivers often use the terms interchangeably because both can create similar symptoms when worn. Excessive bouncing, poor tire contact, nose-diving during braking, and unstable cornering can develop with either design. Identifying which system the vehicle uses is the first step toward the correct repair. What Shock Absorbers Do A vehicle’s springs support its weight and allow the wheels to move over bumps. Without shock absorbers, the springs would continue bouncing after every dip, pothole, and steering input. Shocks use hydraulic fluid and internal valves to control that motion. Most shock absorbers mount between the suspension and the vehicle frame or body. They do not usually carry the vehicle’s weight or determine th ... read more