So I've always imagined running 9" slicks about 28" tall on a 15" wheel. Come to find out, when checking into some Baer rear brakes to go with the fronts (13" T4s) I already have, the smallest rotor I can use (while having an internal parking brake) is a 12". According to Baer, the smallest wheel I can use is a 17". For those who may know, what slick can I run? Can I still get wrinkle wall slicks in a 17" or will I have to go to "drag radials"?