Road Noise/Rolling Noise on S6

[Christopher Gharibo]

I wish to minimize the road noise and the rolling noise on my 95.5 S6.
I'll be changing the tires tomorrow to a smoother tread design.

As the car rolls over the highway at freeway speeds I noticed there is a
rolling noise that varies pitch with the suspension motion of the car, as the
car goes into a dip for example. My other cars do not produce this noise. What
can this noise be?

What're other common causes of road noise or rolling noise in this car?

Thanks for the advice.

Chris







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