Thread: Trying to Diagnose A Noise
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Old 12-17-2018, 09:47 PM
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wpoll wpoll is offline
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Bad wheel bearings are hard to pin down and they usually drone more than they whir.

On the E53 a bad wheel bearing will make a LOT of noise long before it fails completely. They are double races (two ball races in parallel) and so it can be hard to locate a bad bearing based on wheel movement - even with a failed bearing, the wheel doesn't move much. AMHIK...

A whirring might be the power steering pump?
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2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)
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