[steamship]

Originally Posted by Joe2.0E

I have a 2011 D4 that was recently cured with a front left wheel bearing.
It took much deliberation by the garage to decide which wheel bearing was the culprit.

Those are also some of the comments I've seen.

Originally Posted by h20wes

I reduced front pressure from 37 to 31 which has helped a little, it seems the higher pressure amplified the drone, acting like a microphone. It is road surface dependant, which is bizarre, I opted for the Goodyear as every seems to say they are the quietest.

Again, something similar to what I've been reading.

I just find it hard to believe that owners have to basically throw piles of money at their cars in order to eliminate an errant whine, which not even Audi can give a definitive answer to. The A8 is their luxury saloon, and should be the epitome of comfort, yet I've read of people going through different wheel sizes 18", 19" and 20", and then going through various makes of tyres, all at their own expense, to try and resolve the problem. And that doesn't even take into account those who have gone down the mechanical route and have been systematically replacing suspensions components, bearings, prop-shafts and whatever else. It would definitely put me off buying a D4 (not that it is likely), especially when people say that their D3s were quieter.