Troppo
Bemused observer
http://www.werksparts.com/quiet-ride-windshield.html
Based on reviews on another BMW site, I purchased this screen from the US of A.
It arrived today - fitted it and went for a 30 min ride.
Brilliant.
With the screen all the way down, I can ride at 80 km/hr (50 MPH) with my helmet visor up and no earplugs.
At 100 km/hr (60 MPH), you only have to raise the screen slightly, and you are in a pocket of still air - again, visor up, no problems.
As others have said, the design of the screen means that you can have it much lower than the stocker.
Out-bloody-standing.

Based on reviews on another BMW site, I purchased this screen from the US of A.
It arrived today - fitted it and went for a 30 min ride.
Brilliant.
With the screen all the way down, I can ride at 80 km/hr (50 MPH) with my helmet visor up and no earplugs.
At 100 km/hr (60 MPH), you only have to raise the screen slightly, and you are in a pocket of still air - again, visor up, no problems.
As others have said, the design of the screen means that you can have it much lower than the stocker.
Out-bloody-standing.