Vibration at load

Tach together,

The following problem arises. For example, with constant driving. 120 km/h or faster, I have more or less strong vibrations on the vehicle underbody. But as soon as I get off the gas, it's gone. So only in load and in sliding mode is rest.
Does anyone have any idea what it might be about?


Greeting Carsten

P.S. Wheel bearings at the front are both new. It was a terrible sound before.