Hum/Whine/Drone coming from rear 325xi at 60+ mph

gbalstad · 09-23-2014, 09:01 AM

Greetings,
Has anyone had any experience with this? The cv boots are all intact, and I know it’s not the tires. I am thinking it could be the differential, but I’ve also read that it could be the e-brake shoes, or the wheel bearings.
Has anyone had any experience with this?
Thanks!
Gunnar

Deep_Blue · 09-23-2014, 09:09 AM

I had bad wheel bearings on my e30 and it was a loud hum-almost louder than the engine. Sounds like wheel bearings to me. There are a couple write ups out there on how to diag bad bearings

09-23-2014, 09:01 AM	#1
gbalstad New Member 3 Rep 23 Posts Drives: E90 325xi Join Date: Jul 2013 Location: Stillwater, MN iTrader: (0)	Hum/Whine/Drone coming from rear 325xi at 60+ mph Greetings, Has anyone had any experience with this? The cv boots are all intact, and I know it’s not the tires. I am thinking it could be the differential, but I’ve also read that it could be the e-brake shoes, or the wheel bearings. Has anyone had any experience with this? Thanks! Gunnar
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09-23-2014, 09:09 AM	#2
Deep_Blue First Lieutenant 70 Rep 374 Posts Drives: Montego 335i e90 Join Date: Apr 2011 Location: internet iTrader: (1)	I had bad wheel bearings on my e30 and it was a loud hum-almost louder than the engine. Sounds like wheel bearings to me. There are a couple write ups out there on how to diag bad bearings
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