My e92 2011 17k miles doesn't creak at all.
The passenger side window seal just developed a small air leak at 80+ mph. After reading these posts, I believe this is caused by the 50 degree air at night. The rubber seal, as well as the entire car, must have contracted a small bit due to cold. Another factor may be due to the higher density of the cold air. I imagine cold dense air would suck the window off the car with more force than hot sparse air.
Hopefully it goes away tomorrow afternoon when it warms up to ~65.