Steering & Suspension Inspection

Suspension Bushing Age Inspection – Rubber Cracking Timeline

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Rubber suspension bushings harden and crack with age, even on low-mileage cars. A 10-year-old car with only 60,000 miles can still have cracked control arm bushings because rubber degrades over time, not just with miles. This guide shows how to inspect bushings and know when they need replacement.

What the driver feels

  1. A clunk or rattle that gets worse in cold weather
  2. The car wanders on the highway even after alignment
  3. Tire wear that comes back quickly after an alignment
  4. A vague or loose feeling in the steering
  5. A creak or groan when going over bumps or turning
  6. The car feels floaty or unstable over expansion joints
  7. Uneven tire wear on one side
  8. Braking causes the front end to shudder or pull

Rubber suspension bushings are made of natural or synthetic rubber that dries out over 8 to 12 years. On a 2014 Honda Accord or 2015 Toyota Camry that has been garaged, the lower control arm front bushings crack around 100,000 miles or 10 years. Once cracked, the bushing flexes instead of holding the control arm in place, which changes alignment angles and causes tire wear.

On older RWD cars and trucks like a 2013 Ford F-150, the frame-mounted sway bar bushings and shackle bushings also harden. Polyurethane aftermarket bushings last longer but are stiffer and transmit more road noise. The key inspection point is not whether the bushing is torn apart, but whether the rubber has separated from the inner sleeve.

How to inspect it

Safety note: Always set the parking brake and chock the wheels before getting under the vehicle. Use rated jack stands, never rely on a jack alone.

  • Park on a flat surface and shine a flashlight on each control arm bushing.
  • Look for deep cracks that run through the rubber to the inner metal sleeve. Surface cracks are normal; deep cracks mean replacement.
  • Use a pry bar to gently lever the control arm. If the rubber moves or separates from the sleeve, the bushing is done.
  • Check the sway bar frame bushings for cracks and for the bar moving around in the bracket.
  • Inspect the strut mount top bushings for crumbling rubber, especially on European cars.
  • Look at the subframe bushings where the cradle bolts to the body. Cracks here cause clunks over bumps.
  • Compare both sides: if one bushing looks worse than the other, that is the side causing the pull or wander.

Repair and replacement advice

  • Replace control arm bushings in pairs; worn bushings on one side accelerate wear on the other.
  • Press-in bushings require a shop press; some control arms come pre-assembled with bushings pressed in.
  • Polyurethane bushings last 100,000+ miles but transmit more road noise. Use rubber for daily drivers.
  • Always align the car after replacing any control arm or subframe bushing.
  • Greaseable sway bar bushings need annual lubrication; sealed rubber bushings are maintenance-free.

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