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Squeaking Suspension

A squeak or creak over bumps or when turning usually comes from dry or worn rubber bushes, a top mount or a ball joint.

Normal risk

Usually not urgent. Have it checked if it comes with knocking or vague steering.

Short answer · Why does my suspension squeak?

Rubber bushes and joints dry out and crack with age, and dirt gets into ball joints. The parts then squeak as they twist. It is most noticeable in cold or wet weather and over speed humps. On its own it is mostly a nuisance, but a squeaking ball joint is worth checking.

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Safe checks you can do

  1. Bounce the carPush down on each corner and listen for the squeak.
  2. Turn the steering at standstillA creak while steering points to a top mount or ball joint.
  3. Note the weatherSqueaks that only appear in the cold usually come from rubber parts.

Questions that narrow it down

  1. Only over speed humps?Bushes and anti-roll bar mounts are typical.
  2. When turning the wheel?Top mounts or ball joints.
  3. Also knocking?Worn parts with play; check soon.

Possible causes

Listed without ranking. Use the questions above to see which ones fit your car.

  1. Dry anti-roll bar bushesA common source of squeaks.
  2. Worn control arm bushesThe rubber cracks and twists noisily.
  3. Strut top mountCreaks when steering.
  4. Dry ball jointA torn boot lets dirt in.

Questions about Squeaking Suspension

Can I spray lubricant on the bushes?

Avoid oil-based sprays on rubber; they can damage it. Use only a product approved for rubber parts, or replace worn bushes.

Do new parts squeak?

Bushes tightened with the suspension hanging can squeak and wear early; they should be tightened with the car on its wheels.