[s-cars] Strange front end vibration or shaking - 94 S4

[Tim Sexton]

Hello All,
    When making left hand turns at speeds of greater than 75 mph, the 
front end on my 94 S4 begins to vibrate/shake fairly violently.  It 
feels like it originates somewhere in the front right suspension.  The 
car has new tie rods and control arms and I've lifted the wheel off the 
ground and can see no visible play anywhere in the suspension when 
physically moving the tire in various directions.  I've also rotated the 
tires and still get the same bad vibration/shaking.
    I was searching through the archives and saw a few other posts with 
the same symptoms, but didn't ever find if anyone had come up with a 
solution.   I'm wondering if it's a bad wheel bearing, but I'm guessing 
that if the wheel bearing was that bad, the noise would be pretty loud 
and I'd be able to detect it when moving the tire with the suspension 
off the ground.  Any ideas, or did any of the other guys with the same 
issue ever find the culprit?
Thanks for the help,
Tim Sexton

Colorado Springs, Colorado