Could be the other wheel bearing on the other side.
The next time you hear the noise, move the steering wheel left and then right (like you are driving through a slalom). If the noise goes away in one direction and comes back in the other, then that confirms that it is a wheel bearing issue.
A Technician familiar with VWs should be able to identify the sound during a test drive.
Sounds, leaks, vibrations etc are not easy to diagnose with a keyboard over the internet.
Thomas
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Tuesday, March 5th, 2013 AT 8:28 PM