Hi Danny,
Pick car up tomorrow, all I know is that its been to a Bentley garage. they say problem has been sorted. Audi are going to give it a road test to see if problems has been sorted. I will ask if it was balanced using a Hunter balancing machine.
Have you had to change tyres at all. I'm on 3rd set and i'm trying to prove it has something to do with the wheel judder. Long shot but worth a try.
Still on the original contis. Let us know if they used one at the Bentley garage.