Whine in the rear

[grey_andy]

Hello

I've been looking through all the previous posts about diff/bearing whine etc but cannot seem to put my finger on mine...

My car is a 1992 318i cab, done 135k miles. The whine is at the nearside rear. It only whines at low speeds and up to about 25miles and hour. It seems to come and go and is more noticeable after having driven for about 10 minutes.

It also does not whine when turning or when breaking.

Any ideas??

The rear discs & pads have been changed very recently and the handbrake shoes look pretty new with plenty of miles left on them. The handbrake doesn't seem to hold well, cable was going to be changed soon. I haven't checked the diff oil yet and there was little/no movement on the wheels when jacked up and wobbled so unsure if its the bearings.

Thanks in advance!

[Andy325i]

Maybe diff or bearings, are you sure backplates aren't touching the discs?

You "Could" use some axle stands and very gently run it in gear while listening for the diff/ wheel bearings etc.

YOU DO THIS AT YOUR OWN RISK!

[aimlessrock]

Andy whip the diff of and have a proper examination”¦far safer than axel stands.

[daimlerman]

Maybe diff or bearings, are you sure backplates aren't touching the discs?

This was my first thought as well,at higher speeds the rubbing sound will be absorbed by all the other racket the average E30 produces!

[grey_andy]

To be honest I did not check if the back plates were touching the discs or not! That will be my first port of call.

Is there anything in particular I should be looking at if I completely remove the diff? I have not checked the oil since buying it last month so will definitely do this.

[daimlerman]

Is there anything in particular I should be looking at if I completely remove the diff?

Assuming that you are working under a car on axle stands on your drive,a hernia springs to mind...diffs are heavy and tricky to support whilst removing/re-fitting,so check out the easy stuff first.