Hi! Just wanted to share a quick fix to an annoying problem that I had since delivery of my car. The passenger-side mirror would whistle very loudly at speeds above 35mph and it was seriously hampering my enjoyment of the car...turns out that there was a piece of plastic that just needed popped into place underneath the mirror housing. I was beginning the process of adding tape/foam/sponges to the cracks around the door to try and solve it when I saw the mirror housing slightly popped out. I wanted to share this simple fix just in case anyone else is having a similar issue! Thanks!