I had the same problem on my BMW Z4 and was the strut bar.
It was unscrewed on one side.
Check it.

When you were parked and turn the wheel both left and right did it make a rubber grinding sound? Mine gets worse after the second rotation in one direction. Thanks for the reply BTW!

Deep grind or clicking grind?

Have heard replacing alternator pulley and belt fixes this. Can anyone else recall this?

Mine was when moving not when parked.
It was deep grind.

I would say clicking. It started to get worse yesterday when it rained... It's only really noticeable when your trying to park or reverse. Idk if that's because the road and car noise isn't as loud or what.

Deeman said:

Deep grind or clicking grind?

Click to expand...

Can you get someone to listen under the bonnet whilst making the noise..
Should be able to narrow it down to a local area [emoji106]

So i had it taken in to figure it out. It only cost me $57.50... NOT BAD!!! This is what they told me.

(((Worked Performed- Road test, found noise to be intermittent. Noise from front lower control arm bushings. Left side rearward arm bushing is most deteriorated, bulk of noise from there. Recommend replacing front lower control arms ( Forward and Rearward). Alignment needed after replacement))))

So looks like Im going to replace the control arms! Anyone know of any good DIY for 6 series Lower Control Arms???

Here you go to replace the entire arm:

http://blog.bavauto.com/14819/bmw-d...thrust-strut-arms-on-late-model-bmws-e60-etc/

If you replace the bushings only:

http://www.bimmerfest.com/forums/showthread.php?p=5709134

You can press new bushings once, then the second requires full arm replacement. If there is a small triangle stamped into the arm near the bushing it has been replaced once already.

THANKS!!!

Do you know of any DIY on the lower control arms?