I have just noticed a new noise coming from underneath my s-coupe. It sounds like a rush of wind which pulsates every couple of seconds. I thought it might be road noise because it seems to occur on newly tarmaced sections at speeds over 70mph. Anyone else noticed this? It seems strange that the Tarmac itself can set up such a rhythmical noise. I have only noticed it on fast newly surfaced dual carriageway.
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