That's odd. I have a similar one in size and design to the Adamesh one and find it great on motorway speeds.

 

Crap compared to BMWs' that I've previously owned which were fine at 70+, but they did have the facility to raise the rear windows which probably makes a big difference.

 

Ahhh that explains it then. I've done the mod to raise my rear windows

 

It has two mounting points the upper one I used and a lower one that raises it another 12 or so inches. On the freeway it worked surprisingly well at the lower setting, most of the wind comes up between the seats for me. I expect that with the windows up and at the higher setting it would be even calmer.

 

How hard is that to do? any write ups? thanks!

 

Complements of Reverend Sam: https://www.jaguarforums.com/forum/x...op-down-37826/