Originally Posted by Guard Dad

Just a heads up, I had the wheels off the car yesterday and I checked the rear wheel wells to see how "noisy" they were when tapped with a knuckle. I found that the outer half of the driver side wheel well had a distinct ring to it when tapped. The passenger side rear wheel well was not nearly as bad, probably because the gas filler pipe changes the shape of the wheel well liner. This was after I had done a fairly extensive Dynamat job on the car (see my prior posts early in this thread). I had some rubberized undercoating in the garage so I applied a heavy coating on the outer half of both wheel wells which seemed to make a modest improvement, this should help with "pebble noise" too. My advice would be to include a heavy application of undercoating in the rear wheel wells to complement the application of Dynamat in the interior of the car.