The difference between track and touring mode suspension setting is negligible. The electric/magnetic shock absorbers look amazing on paper but no so great in practice. I spoke to a guy who races his Audi A8. He completely replaced the suspension; he can adjust the height and vary the stiffness to the point where the ride goes from super stiff for racing to marshmallow soft highway. His wife (as passenger) is very pleased. Has anyone done this to their BW? He said it cost between $5,000 and $6,000 as I recall. Any suggestions?