Today, I test drove a 2007 M35. I noticed that above 80 mph there was a noticeable whistling like sound (wind noise) coming from what I perceived to be the sunroof area. The salesman and I made sure all the windows, doors, and sunroof were fully closed.

I am wondering now if this is "normal" for this car or not?

Personally, I suspect it came from the aftermarket wind deflector the dealer installed in the front part of the sunroof. I know these are typically clipped into position and am curious if any of you owners have any input.

 

I don't get any noise from my sunroof at 80 mph. I have sport so the harder tires start get pretty loud after 80mph, but that's to be expected.