I would stay away from Teslarati's roof rack. I just got it this past weekend and experienced massive whistling noise - even at slow speeds (below 20MPH). It was not just normal wind noise that you might be able to live with, it was a high pitched whistling noise that you can't ignore.
I uninstalled it and emailed them for a refund, but have not had a response yet. Their site says no refunds if a part has been installed so I could be SOL but save yourself the potential headache and stay away from this product. The build quality on the rack was well below average upon further inspection. There were noticeable gaps in the rubber and plastic covers which I suspect was the cause of the whistling.