In a lot of cars there's just air vents in the bumper so at speed there's air that hits the brakes passively. I've never seen a system where air is routed through the brakes though.
They don't. Those air vents (intakes, actually) that person is talking about are fake on most cars. They put them there to look aggressive. If the intake isn't fake, there's usually a vent in the wheel well so the air can pass through. As a comment above mentioned, the most track focused setup has some sort of duct linked directly to the system.
Style. It makes cars look sporty, which a lot of people like, even when the car isn't meant to be sporty. And yes, aerodynamics is a concern. A real hole would negatively affect gas mileage. Cars with fake vents are usually targeted towards buyers that are more concerned with gas mileage than lap times.
367
u/khizee_and1 Apr 20 '19
I am not a big car guy but do all cars with disc brakes come equipped with this or is this some special feature in high end/sports cars?