I just read that the Aero wheels has been (may be?) discontinued. From what I understand, the main positive of the Aero wheel would be to limit turbulance of air flowing from one side of the wheel to the other - probably in an inside-out direction. This turburlance is what I understand would result in the interuption of air flow along the side of the car resulting in a higher CD, which in turn would lead to lower MPKw.
A possible solution may be to purchase a product that fits inside the wheels - actually intended to keep down brake dust - called Kleen Wheels http://www.kleenwheels.com/kleen-wheels-dust-shields
I have no affiliation with them, but have used them in the past for brake dust, and they actually do a good job. It also seem that it would somewhat limit the flow of air through the wheel, therefore limiting turbulance. Some people have worried about rotor warping, but I have never known of this problem first hand either by me or by people in various car clubs I have been and am members of now. Having said that, I would not use them to autocross with, but I don't think I will be doing that with the S anyway. I have personally used them on Saabs and BMWs with no problems.
Just a thought......
A possible solution may be to purchase a product that fits inside the wheels - actually intended to keep down brake dust - called Kleen Wheels http://www.kleenwheels.com/kleen-wheels-dust-shields
I have no affiliation with them, but have used them in the past for brake dust, and they actually do a good job. It also seem that it would somewhat limit the flow of air through the wheel, therefore limiting turbulance. Some people have worried about rotor warping, but I have never known of this problem first hand either by me or by people in various car clubs I have been and am members of now. Having said that, I would not use them to autocross with, but I don't think I will be doing that with the S anyway. I have personally used them on Saabs and BMWs with no problems.
Just a thought......