So many variables really. If uve got a street car with decent pads and ****loads of power and factory weight etc yet no ducting youll still have issues. If your a heavier braker ull have more issues than a lighter braker who doesnt push as hard. if u do 1 or 2 hard laps and a cooldown lap u wont have issues but the same person doing 10 laps back to back will etc.

On the street i doubt ud ever get ur brakes hot enough ud overheat ur brakes.

On the track its going to come down to heaps of variables, driver skill and aggression, length of fast laps without cooldowns, power level of car, weight of car, grip of tyres, type of pad and disc used, thickness of disc and pad, ambient temp etc...


What i was getting at earlier is that you dont want to put like 4 different points of cooling and turbocharge the cooling etc esp for a more mild car only doing casual track work or hard street driving cause you could end up over cooling ur brakes and never getting them in the operating window.

Some simple ducting can be sufficient. its trial and error alot. But the most efficient way to cool is to duct air through the center of the rotor and out the outer edge of the rotor. the rotors are designed to have air pulled through from the middle to outer for cooling naturally so ducting and blocking off this area kind of just accelerates the process and makes it more efficient. i doubt youd get much gains by blowing air onto one part of the caliper etc. due to heat soak

 

Just stumbled across this again. Seems high end S550's already have the diffusers.
Kind of the next level that our factory undertray has. I'm not sure there is space on an EVO to do that with
an upgraded oil pan (and/or oil cooler in factory spot) like many run (including me).






https://vorshlag-store.com/products/...-deflector-kit