I've had the Volvo wing profile cross bars since my car was new - bought them at the Factory Delivery Center in Goteborg. They work great and there's really no decernable noise until maybe 45 mph and then goes away at around 50 mph. I have the rear cross bar located as far back as is possible. The leading cross bar is exactly 31" forward of the rear one. I did experiment some without anything attached to cross bars as this is the normal mode of use and found this positioning to minimise wind turbulence noise. I never remove the cross bars.
Regards -- Barry Sharp
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Current: MY2012 XC70 T6/Twi Bronze/Espresso Brown/Polestar/Platinum/BLIS/Tech/ABL/Scuff Plates/Front&Rear cameras
Traded 2011 C30 R-Design
Son's '01 S60 2.3L T5,Maya Gold,96Kmi
Son's '03 XC70 Platinum Green (OSD)
Daughter#1 2011 XC60
Daughter#2 2010 XC90
SOLD '86 745 GLE 6-Cyl-Turbo Diesel,Graphite,255Kmi
SOLD '03 XC70 to my son
SOLD '03 XC70, '04 S60R, '07 S60R
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