I was driving my new 323i(with all the windows closed)on the highway at around 55-60 MPH when a friend pulled down one of the back windows and a very WEIRD and bothersome sound started. As soon as I pulled the window up, the sound stopped. I did a few tests, and if you bring down any or the two back windows at this speed,the weird sound will start.
Has anyone experienced this? Can any of you please try this and let me know your experience?
'00 323i Sport/Premium