What kind of noise are we talking about here?  I have used FatMat to cover
the front floor, rear deck, inside front doors, slider and under the seats.
Double thick in places.  The cargo area has the original rubber mat plus a
thick rug.   New shocks, new Michelin LTX tires, etc.  I have also coated
inside the wheel wells pretty heavy.

My Syncro Westy is pretty heavy and on freshly-paved roads it's almost as
quiet as a new car.  But, if the asphalt has worn down to expose the
aggregate, I get lots of what I call "tire roar".

I don't think the FatMat treatment has done much if anything to quiet that
noise.

So, does anything *really* get rid of the noise created by rough pavement?

Tom Salicos
'87 Syncro Westy EG-33