W124 vibrating at highway speed

[yosshimura]

E320 - still vibrating after new tires ...

I had posted this over in the tire section, but by the responses it seems it might be a tech issue...

After reading a couple of helpful responses I searched flex disc and center support bearing but it seems if either of these go bad the car would make a clunking noise or a drone possibly. Not my case, the car is as quiet as it could be , just the vibrating at highway speeds (as I said before, feels like my g/f's Ford Focus ).

In recap of my post in the tire section I just replaced the two front tires for Michelin MXV4 and had it aligned yesterday. In the back I have one MXV4 and a Continental (forgot which one, but it rode very well when I had the four Continentals in the past, meaning not a cheap tire). Someone mentioned make sure I have four MATCHING tires. My vibration I feel it coming from the floor board.

Note it is note excessive as if the car is falling apart, but just imagine driving, as I said before , and Escort or Focus (well, I mean any American made car )

I have to do the front brakes as the light came on 2K miles ago, so wonder if the rotors could be warped or something? I don't know just brain storming.

tha nks