My version of front spat...

[deejaaa]

my first impression from the 60 mile trip is it didn't hurt mileage. turns were as predicted and weren't improved. have half tank so when next full tank numbers in I will have a better picture.

[freebeard]

can you link the BMW info?

Here's a 9-page 2011 thread on the very subject: http://ecomodder.com/forum/showthrea...ain-17418.html



Edit: From April of this year, there's this:

http://www.chicagonow.com/drive-he-said/2015/04/2015-bmw-x5-xdrive35i-coin-lob-into-fountain-of-sports-active-ute-review/#image/3

Improved Aerodynamics = front air dam Air Curtains [a human hand can fit through] and prominent fender Air Breathers.

I think the key is high-velocity air in a converging duct.