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      06-13-2022, 10:13 AM   #1
softsign
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Drives: BMW X3
Join Date: Mar 2019
Location: Canada

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Undercarriage rattle when driving over uneven surfaces at low speed

Can anyone identify the source of this rattle on a 2017 F25 (28i)? Video attached, sorry for the shot of my bare foot as I just took it driving around the block this morning.



The rattle sounds like it could be coming from just behind or just below the firewall. Possibly front driver's side of the car.

It's most noticeable at low speeds (when the cabin is quiet). Happens when going in a straight line as you see in the video. There's no obvious problem with the steering or suspension and I just did a 1200 km round trip over the past few days, with another 300 to go today.

Wondering if it's just something that's worked loose on the undercarriage or maybe a suspension component that's worn out?

Doing some digging around the forums had me wondering if maybe it's a strut mount bearing? Would that make this sound?
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