You just gave me a crazy idea, thanks man. Forward swept winglet to guide air to the inner rear of the tire. Did you know that a spinning tire creates a jetting vortex that is proportional to the yaw angle relative to the flow? That means if the airflow is hitting the inside of a spinning wheel and tire at ~25 degrees, instead of a turbulent wake, you get a vortex instead. You often see cars try to limit tire turbulence by adding winglets, and sculpting the fenders, and adding slats and whatnot. Your own road car likely has flaps in front of the front tires to reduce the turbulence they create. Same with the rears. However no passenger car designer bothers to exploit the vortex you can generate from a spinning tire. While a vortex still creates drag, it is less draggy than pure turbulence, and the vortex can be used to limit tire turbulence from bleeding under the car. That's because the vortex is outwashing, and tries to fill the low pressure at the back of the tire.