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Vibration Felt Through The Floor

A vibration felt mainly through the floor or seat, rather than the steering wheel, usually comes from the rear wheels, the propshaft, the exhaust touching the body or worn engine mounts.

Normal risk

Have it checked soon. A worn propshaft joint or centre bearing can fail.

Short answer · Why do I feel vibration through the floor?

Vibrations from the front wheels usually reach the steering wheel, while those from the rear wheels, propshaft and exhaust come through the floor and seats. On rear- and four-wheel-drive cars, worn propshaft joints or a centre bearing vibrate with speed, often more under acceleration. An exhaust pipe touching the body passes engine vibration into the floor.

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Safe checks you can do

  1. Note if it follows speed or revsSpeed: wheels or propshaft; revs: engine or exhaust.
  2. Check rear tyresLook for bulges or uneven wear.
  3. Look at the exhaustCheck that it does not touch the body or heat shields.Only touch the exhaust when cold.

Questions that narrow it down

  1. Rear- or four-wheel drive?The propshaft is a suspect.
  2. Worse under acceleration?Propshaft joints or mounts.
  3. Present at idle?Exhaust contact or engine mounts.

Possible causes

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

  1. Rear wheel imbalanceVibration with speed.
  2. Worn propshaft joint or centre bearingUnder load and speed.
  3. Exhaust touching the bodyVibration with revs.
  4. Worn engine mountsVibration at idle and under load.

Questions about Vibration Felt Through The Floor

Can a propshaft be balanced?

Yes, specialists can balance or repair it.

Why only at some speeds?

Vibrations are strongest where they match the natural frequency of parts.