yeah, what i meant by that was wider than the stock fender, but in order to get that duct to work, it would have to tuck back in, or the duct would have to stick out even more than the new wider side skirt in order to get any air in there. both of which seem like they would be visually awkward (of course that is just my opinion though), although having it tuck back in would be the less awkward solution. with those wheels you are using (is there a real wheel you have picked out like that by the way? they are pretty cool) i would expect you'd have plenty of brake cooling, but if no, you could always source your brake cooling ducts from the air passing under the car(there should be some space near the drive shaft in the center), and have the air directed from inside the wheel well. unless you route the air beyond just opening a duct, it's only going to hit the tire anyway, and not be directed towards the brake rotor, doing what i imagine would be more aerodynamic harm than brake-cooling good?