I have a wind nosie that seems to be comming through my middle vent in my 2004 X5 when I am on the highway (60-80 mph) I have tried turning the outside air vents off, moved the wipers, turned the AC on/off, turned the fan high/low. Nothing seems to affect it. It only goes away once I slow down. It is not something that always happens at a certain MPH but it only happens when it is windy and the car speed is 60 ish. The car has 121k mile on it. Does anyone have any ideas?