front wheel noise on 2005 Mercedes-Benz E320 CDI

At about 50-60 MPH I can hear a annoyng noise coming ( I think so) from left front wheel also a light vibrations in stering wheel can be feeled.I balanced all four wheels and no help,

Sounds like the front wheel bearing is failing you can find a repair shop here and double check repair prices here
1 more answer
if you are hearing a rumbling type noise it is most likely a bad wheel bearing hub assembly, try turning slightly left and right the noise should get more quiet or noisier as you load unload the bearings