Kamm effect - I presume Doctor Watson ? :confused:

Or boundary layer separation?

Apparently the underside of a car has a massive effect on drag, so a smooth belly and lowered vehicle with big air dams/chin spoilers is more slippery. What's the CD of a lowered brick?:P

Phil

A octy vrs hatch has a better cd of the normal octy hatch. MAkes sense as its lower to the ground.

As a brick has a smooth under-cracker and sites on the floor would this make it more aerodynamic.......with or without rear spoiler......or new vRS badge. :confused: