[satz]

Speaking from an X2 perspective, I got the Msport, 19 inch wheels with adaptive suspension.

It is really worth the relatively small extra cost.

You can switch it on or off from the drive experience screen. It only gives you the option when you select 'sport'. Then you can make sport mode apply to the drivetrain and suspension, or just the drivetrain.

I found that I leave it 'drivetrain and suspension' active most of the time unless I'm on choppy country roads. The firmer mode is apparently equivalent to the normal fixed Msport suspension in terms of firmness and damping control.

The switchable suspension really does make a difference to the ride quality.

I never got a good answer from BMW why I could not specify adaptive suspension with 20 inch wheels...