Tiger 900 Gt Pro Wind Screen

I agree with you. As a tall guy at 6'4, I'm dying at freeway speeds.

Has anyone tried this item:
Triumph - Screen Deflector Coated (A9708875)

 

I'm 5'10" and find the Tiger GT windshield directs the wind over my helmet but the wind load on my chest is annoying. I'm planning on buying a new shield from California Scientific https://calsci.com/ because they are wider than the stock shield. Lots of interesting stuff on this website.

 

The essential thing about the ergonomics and aerodynamics of windshield design is that it has SO many variables that there is absolutely no universal truth or science upon which to rely.

You can have two 6ft 5ins males of similar, or even identical, 'build' on identical bikes with identical windscreens - or other devices such as fairings, etc. - and they are likely to find that the effect of wind, turbulence, noise and comfort differ enormously between the two of them. The underlying reason for this is that the "relationship" between things as seemingly insignificant as neck length, arm length, length of the spine and so on, will place a rider's body in wholly different positions on a bike - almost always enough to make the practical ergonomics distinctly different - regardless of similarities in overall height and build. It's easier to understand when you consider how very different a 6' 5ins person with inside leg measurements of, say, 33 inches would look when sat on the bike of a 6ft 5ins person with a 37 inch inside leg length. As we all know, four inches can make a hell of a difference ......

I used to work for a guy who was 6ft 7ins tall but who had enormous difficulty finding a car that was comfortable enough to accommodate what he personally described as his "unusually long spine". Getting the driver's seat low enough to prevent his head hitting the cabin roof whilst allowing him to reach the steering wheel and pedals was apparently a tedious and frustrating task!

So, the effect of turbulence in realtion to overall rider's height is going to be pretty much impossible to predict or compare.

 

I’m 6ft 6 and the givi 6415st works well for me

 

I got that screen
The first one cracked at two of the mounting holes
I spoke to the calsci owner and got a replacement
Watch the mounting points, they are in a perpendicular line to the direction of travel
The screen has a curvature and toches the mounting points at an angle
My solution was to add rubber washers sanded in an angle, so far no cracks
I have taken the bike offroad, over very broken pavement, up to 200kmh, and so far so good.
The first screen cracked after the first ride.
I needed longer bolts to accomodate the rubber washers over and under the screen
I really like the wind protection I get with the calsci screen