Let me see if i can re-create the noise for you. Your driving in the rain, at about 45mph there is a horrible screech coming from the front of the coach. You’ve check all the windows. Nothing seem to effect the sound other than slowing down!. If this fits the scenario then its most likely your grill material! Thor’s fix for the noise was to sent me a some new grill material to fit behind the original grill. It had much smaller openings and once i installed it the noise stopped!
__________________
|