Read my earlier post...I recently have the exact same symptoms!
Intermittent vibration, especially at highway speeds and only after the car has been driven awhile. Last week I checked the suspension system visually and "mechanically". I could not see or feel any obvious problems.
I am beginning to think it is the inner CV joints or possibly wheel bearings. I don't want to spend a bunch of money needlessly, through by hit-or-miss repair tactics!
