Function VehicleWheel.brake
Slows down the wheel by applying a braking force. The wheel is only slowed down if it is in contact with a surface. The force you need to apply to adequately slow down your vehicle depends on the RigidBody of the vehicle. For a vehicle with a mass set to 1000, try a value in the 25 - 30 range for hard braking.
double brake() nothrow @property @nogc;
void brake
(
double v
) nothrow @property @nogc;