>Had a very similar symptom on a Cadillac, turned out (no pun intended) that
>one of the rotors had warped. Vibration set in at 62 mph every time. I have
>no clue why it didn't do it at lower speeds, but there ya go.

That should be detectable by jcking the car up & rotating each front
wheel by hand. Where the disc is warped it should bind slightly. You
might need to push the brake pedal first to close the pads up.
--
Andrew Grebneff
Dunedin
New Zealand
Fossil preparator
<andrew.grebneff@stonebow.otago.ac.nz>
Seashell, Macintosh, VW/Toota van nut