thanks for your interest marti. It`s definitely wheels or transmission between output from gearbox and front left drive wheel. To prove it I have put drive into neutral while descending a long slope at the fore mentioned speed, engine at tick over revs. and the whining is still heard . The other opt...

Thanks marti have also put that issue to the engineers and they have tested for same by steering left and right during whining noise without any change. It is also a question why noise disappeared when moving wheels from back to front with the Michelin tyres. Also wheel bearing would probably get wo...

over the past 2 yrs of owner ship of my 2010 e70 x5 I have noticed a rotational whine when slowing in over run from 60 mph to 40 mph. The noise is more prominent at 55 mph. My local BMW main agent investigated the issue and swapped the front wheels for the back which fixed the problem. The time came...