Hi Andrew....welcome to the Forum
There is a thread on this forum that has been running for the past two to three weeks with very similar issues on a 3 series I believe....worth searching for this one as it had very similar information.
In respect of the steering / suspension geometry being misaligned - uneven tyre wear....I would find out why this is as opposed to allowing them to just adjust settings, as this may be the cause for the excess noise (wheel bearings, worn suspension joints, etc).
Let us know how it is all going
Greydog - maybe one for you as you are the X5 specialist