Quote Originally Posted by lswing View Post
So does anyone know why the stock mounts use a solenoid anyhow? Do they actually lock up under load, and then unlock and remain softer when driving normal to allow less vibration?
I read it's so you realize the mount is compromised/damaged. They are hollow like most mounts, but filled with hydraulic fluid. This reduces vibrations. My opinion is that solid rubber ones would be better. Last a lifetime. Just don't know how it has worked for these RS6 cars