Put a wind deflector on, see If that will help with the wind noise. Had to make up some custom brackets as the Thule supplied brackets wouldn't fit OEM roof rack. :
Amazon.com: Thule AirScreen Fairing, 52", Black : Automotive
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Amazon.com: Thule AirScreen XT Wind Fairing, Black : Automotive
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AirScreen XT for Thule Crossbars - 52" Long Thule Accessories and Parts TH22WV
