Universally Fit Rooftop 43" Roof Rack CrossBar Wind Fairing Air Deflector Kit | eBay
Wind deflector
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. :
Thule 870200 - AutoAccessoriesGarage.com
Wind Fender Fairing, Deflector for Thule/Yakima Roof rack Wingbar EVO, Car Accessories, Accessories on Carousell
Thule Fairing (38" Medium) Wind deflector reduces noise and improves mileage at Crutchfield