Please see the video in the link for my e70 2009 3.0, for the front drive shaft, in the video the wheels were in the air and I was quickly rotating one of the wheels in both directions forward and backward, and this sound comes from the shaft, don't really know the cause and if it's normal or not.
https://mega.nz/file/18gyyJzB#-_fcTp...5xfyT_SJhV6O8c