The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

Front End Clunking on 2017 X3 - Control Arm Bushings?

0

Mike T. · rep 0 · May 25, 3:03 AM · 1 replies · solved · Question

Vehicle: 2017 BMW X3 xDrive28i (F25)

My 2017 BMW X3 xDrive28i (F25) has developed a noticeable clunking or thudding sound from the front end, especially when going over bumps or turning at low speeds. It feels a bit less stable too. I'm at 85,000 miles, so I'm thinking it might be suspension components.

Could this be worn control arm bushings? Is this a common wear item at this mileage? What's the best way to diagnose it, and what parts would I need if it is the bushings?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 3:03 AM

0

ClearTheCode admin answer:

Yes, a clunking or thudding sound from the front end, accompanied by reduced stability, is a very common symptom of worn suspension components, particularly control arm bushings, on BMWs around the 80,000-100,000 mile mark, including your 2017 X3 (F25 chassis).

Causes:

  • Degradation of rubber bushings due to age, mileage, and exposure to road elements.
  • Wear and tear from impacts, potholes, and general driving conditions.

Diagnosis:

  1. Visual Inspection: With the vehicle safely on jack stands or a lift, inspect the control arm bushings. Look for cracks, tears, or excessive play in the rubber. A pry bar can be used carefully to check for movement that shouldn't be there.
  2. Wheel Play: Grab the wheel at 12 and 6 o'clock, then 3 and 9 o'clock. Try to rock it. Any significant play could indicate worn ball joints or bushings.
  3. Listen: Sometimes having a second person gently rock the steering wheel or bounce the car while you listen under the front end can help pinpoint the source of the noise.

Parts to Consider Replacing:

  • Front Lower Control Arms: Often, the bushings are pressed into the control arms. Many owners opt to replace the entire control arm assembly (which includes new bushings and ball joints) for simplicity and to refresh all wear items.
  • Sway Bar End Links: These are also common wear items that can cause clunking sounds.
  • Tie Rod Ends: Check inner and outer tie rod ends for play.

When to See a Shop: While inspecting suspension components can be a DIY task, replacing control arms and bushings requires specific tools (like a press for bushings if you're not replacing the whole arm), proper torque wrenches, and often an alignment afterward. If you're not comfortable with suspension work, or if you can't definitively diagnose the issue, it's best to take your X3 to a trusted mechanic or BMW specialist. Worn suspension components can affect handling, tire wear, and safety. There are no OBD codes associated with worn suspension components.

Menu

Help & account