Originally Posted by Crux

Takjak, that article was really good, but went over my head a few times. The key points I took from it (correct me if I'm wrong) were: volume of air entering the diffuser dictates optimal rake; to reduce delaminating and/or increase efficiency, create vortices; and the suspension setup can create the same effect as a diffuser - without using a diffuser.

As for the turbulent air from the tires, as I understand, ideally you want to isolate it so it doesn't slow down the air from the diffuser.