So... I did some CFD runs for the HPV fairing... Rolling wind tunnel, 30mph, 68 degree dry air..... Then I lowered it, from 2 inches to 1 inch.... And I got a decrease in drag... About .3 pounds... Significant for the amount of total drag on the fairing
No wheels or anything getting hidden - purely height change
The fairing is a streamlined body - flow never goes turbulent....
Just food for thought
Soon, I'll have a nice models of production cars to test
