Worn Shock Absorbers and Springs: Signs Your Suspension Needs Attention

What shock absorbers and springs do

Springs hold the car up and absorb bumps. Shock absorbers, also called dampers, control how the springs move, so the car settles after a bump instead of bouncing. Between them they keep the tyres in contact with the road, which affects grip, braking and stability.

Because a worn damper reduces control without making any dramatic noise, it is easy to underestimate. Reduced tyre contact can affect braking distances and stability, particularly in the wet.

Signs of worn shock absorbers

A car that keeps bouncing after a bump or a speed hump, floats on faster roads or feels unsettled in crosswinds is showing damper wear. The front dipping heavily under braking, known as nose-dive, and the rear squatting on acceleration are other signs.

Look for oil leaking down the body of the shock absorber, which means the seal has failed. Knocks and clunks over bumps may come from the damper mounting, the top mount bearing or bushes rather than the damper itself, so inspection is needed to say which.

Do not judge the dampers on a quick bounce test alone. Pressing down on a corner of the car and seeing how it settles is only a rough guide, and a proper inspection on a ramp checks mountings, bushes, leaks and spring condition too.

• Repeated bouncing after bumps or humps
• Nose-dive when braking, or body roll on corners
• Knocking or clunking over uneven surfaces
• Oil staining on the damper body
• The car seems to wander or feel vague at speed

Tyres can give it away

Worn dampers allow the wheel to bounce, which can create a pattern of uneven, scalloped wear on the tyre tread, sometimes called cupping. Uneven wear can also come from alignment problems, so it is not proof on its own, but it is a good reason to check the suspension as well as the tyres.

If a tyre has worn strangely, replacing it without finding out why can mean the new one wears out the same way.

It also helps to remember that dampers wear so slowly that you adjust without noticing. A comparison drive after replacement is often a surprise, with the car feeling tighter, more settled and quieter over broken surfaces.

Springs and potholes

Coil springs can crack or break, usually near the ends. A broken spring may cause one corner to sit lower, make a crunching or rattling noise over bumps, and in some cases damage the tyre or surrounding parts. If you suspect a broken spring, have it inspected promptly and avoid driving the car hard.

Potholes are a major cause of suspension damage. A hard hit can bend components, damage dampers or spring seats and knock out wheel alignment. If you have hit a sharp edge hard and the car now pulls, clunks or looks different, get it checked rather than assuming it is fine. Winter road wear on Tyneside roads makes this a real consideration.

Short town journeys, speed humps, kerbs and unmade surfaces all shorten the life of suspension parts, and heavy loads in a van put extra strain on springs, so wear tends to arrive earlier on work vehicles.

MOT relevance and replacing in pairs

At the MOT, suspension is inspected for excessive wear, damage, leaks and corrosion, and a broken spring or leaking shock absorber can be recorded as a defect. The exact assessment is set by the current MOT standards, so check the official guidance for specifics.

Shock absorbers and springs are normally replaced in pairs on the same axle, so that the two sides behave alike. At Banks of the Tyne we carry out suspension repairs, including shock absorbers and springs, and we will show you what we have found. The cost depends on the vehicle and parts needed.

Frequently asked questions