Seems really simple - which could be a very good thing

 

Perhaps beneficial on a track but I wonder If used on the street would just deflect more pebbles and grit and water onto the rotors. give them a try. NV

 

My recommendation for these would be for summer and track use, to remove the OEM heat shield for best cooling. Then for winter or street use put them back on. This is what Cadillac makes owners do for the 4V-BW. They won't install the brake deflectors that come with the car; it's part of a track prep procedure and they mandate you remove the deflectors after track use.

These would be fine either way.

OEM Porsche brake deflectors:

 

You could also run wheels with vanes for brake cooling, like the new ferraris..

 

Apparently someone makes wings that bolt onto the lugnuts that do this (probably cheaper than buying new wheels):

RimWings

RimWing Science - Understanding The Aerodynamics of RimWings

www.aerolarri.com

Could you run ducting from behind the radiator to the wheel wells too? Would help with drag and also cool the rotors a bit.

 

That might be slightly more expensive than this solution but very cool nonetheless

 

You need a filament dryer....

 

I have one. Pictured are ABS prototypes.

Nylon is expensive...

 

One of the working and best brake cooling kit - GMS.

 

That is the proper way to do it, but it also is $$$$$$.

 

Pass side: duct. Driver side: no duct

2x hard braking from 70-30, 1/8 mile cooldown. Took 3 readings on the pass side first and then ran over to driver side and took 3 readings. Average readings on each side:

Driver (stock):

Pass (duct):

Obviously these are not track temps, I can only do so much on the street, but the delta should only be bigger the higher the temps get. My car has OEM shields on it right now and with those off the car I think the results will be even better.

No wheel rubbing at all. There's more room to be had even after I oversized the ducts for version 2.0 so I made the duct vertically about 5% bigger again to pick up more air under the car and that'll be final version. Slightly larger duct than pictured here.

@LSchiro

Rears up next

 

ABS prototype, please don't shoot