Thread: D3 wallows on the freeway- is this normal?

I also would not describe the D3 at Access Height 'wallowy'. More like a race car stiff. I find driving around a carpark or negotiating speed humps in AH painful given how severe any bump feels.

In fact I think it lowers automatically above 160kmh for autobahn users.

I have noted you can select AH at speed and it will lower and then return to normal.

And on the bump stops it's like driving on a trampoline.

Air springs are (unfortunately) stiffer the more air you add, so at access height the spring is at it's softest and at off road extended it is at the stiffest.
The lowering at high speed is to help aerodynamics only, the suspension will be softer and body roll will increase. Not that important on an autobahn as the curves are gentle and the bumps are smooth.