Do you know why #Rally1 cars have such high wheel arches? And why Toyota and Hyundai's rear arches are the only exceptions to this trend? Aerodynamics is behind it, read on this thread to find out why.... 📸by @MSportLtd#WRClive#WRCliveES#WRCjp#YpresRally
Removing air from the wheel well (and therefore the underbody of the car) is a clever way to reduce the pressure under the car. As the pressure on the car remains constant, the force pushing the car towards the road increases (more downforce = more grip).