I have roof racks on my Model 3.
No significant increase in noise with the Tesla Roof Rack rails, however once I put on bike trays it gets much louder over 60mph.
Bike trays with bikes in them is VERY loud.
If I had a Y I would go with a tow hitch instead of roof rack, not sure how much of a pain that would be at SuperChargers when backing in?
I tried these. Didn’t make much differenceA quick follow-up for what fixed the noise I was getting from the roof racks on my model Y with the rubber inserts in. Hope this helps others.
I bought 6 of these Rhino rack vortex strips (they come in smaller strips), removed the rubber insert from the roof rack channel on the front cross bar only, cut to size. Then tested at 60mph - 80mph, no more noise.
These fit, look ok, and best of all fixed the noise I was hearing. I have extra for when I will use my fork mount bike rack to cut to size for that.