What is the horizontal bar
that sticks up at the back of the Le Mans cars for?
This bar is called a wing.
The cars body
shape is fixed when the car is built and is not easy to vary.
But the wings fitted at the rear of the car are adjustable.
The slope of these affects the amount of downforce they produce, so the proportion of downforce front to rear can be varied to improve the cornering performance of the car.
