I find it helps reduce the dust and mist on my back window.

It helps stop excess water from your rear windscreen from flying onto the windshields of following traffic. This combined with red Rally Armour mudflaps will make you an extra courteous driver, especially on cruises.

[QUOTE=TheDoctor;699601]It helps stop excess water from your rear windscreen from flying onto the windshields of following traffic. This combined with red Rally Armour mudflaps will make you an extra courteous driver, especially on cruises.[/QUOTE]

Possibly needed on some work sites also.

[QUOTE=steve-lang;699620]Possibly needed on some work sites also.[/QUOTE]

And last but not LEAST "rain and mist" from the road for following cars :o

Is there a pic of the wing your using or thinking about?

[IMG]http://i1163.photobucket.com/albums/q551/DOW55Y/b6ab866e.jpg[/IMG]