saasheim

I have experienced a similar speed related noise. Mine is harder to localize though; either the mirrors or windshield is my bet. I tried sealants and caulk; and tape as someone else recommended to isolate the "leak". I still have the noise. A friend with a Tiffin Phaeton found a location where his windshield under the pressure of driving would touch the dash and created a harmonic. An exacto knife solved his problem. I'm still trying to find mine!