2008 A6 3.0 Tdi Quattro Avant Lemans. I've owned this car for almost 6 months now. The road noise on most road surfaces can be almost unbearable. Sort of like a droning noise. As you'll all know Lemans A6's have 255 35 19 tyres. Mine is fitted with Michelin Pilot Sports. Still have a good bit of wear left yet. Tried playing about a bit with tyre pressures, without success, as recommended ones seem a bit high to me, 38 psi rear 44 psi front. I've had wheel bearings checked and appear to be fine. Car has done 32000 miles. This is spoiling the car for me and I'm close to the point of getting rid of it. Anyone got any ideas ? Anyone have similar problems ?