By way of comparison, this is what a race-specific cooling plate looks like. I run these on my Spec3 race car. Notice the flange is angled slightly towards front and that air is directed to center of hub/rotor to force flow into and through cooling veins.
http://www.bimmerworld.com/BrakeCool...es_E36__WM.jpg
Better yet, e82 specific part:
http://www.bimmerworld.com/E9X-E8X-N...ate-Right.html