Originally Posted by
sigueugis
Ever notice on the take-off how the nose gear vibrates and makes a horrible noise until the gear doors are closed? Seems to be unique to the 800s. My latest take-off from SEA-DEN was testing my comfort level as the vibrations and noise were really bad as the nose lifted up.

Sounds like the wheel is out of balance, or the "scrubbers" (the non-technical term for the little pads that stop the wheels from spinning upon liftoff) are going bad.
Neither are big problems and are certainly not unique to one aircraft in particular. I've heard it on an AS 739 and MD-80, a WN 733 and 73G and so on.