2 of my customers having E46 320I MSport have this complaint.Whenever the car moves over any uneven surface, cornering or going down many levels in the basement, there is a squeeking sound from around the sides of the door windows. I drove their cars, and heard the noise. It's actually not squueking. It sounds as though when the car is moving over bumps or cornering, the body is flexing, and the entire door is moving very minutely, causing a slight "rubbing noise" that seems to come from the rubber strip around the upper 50% of the door frame. My guess is:1. Worn out door hinges. 2. Improperly aligned doors. Could be due to any previous collision repair??3. Door and window trim rubber have hardened and rubbing against each other?Any ideas, guys and gals?