You Might Want to Try the C32 AMG Front brake set up!I Upgraded The Front Brakes on My C230k coupe and my w210 wagon they work Great...And They are Factory Mercedes AMG!
Then Install Crossdrilled rear rotors,some steel braided flex hoses ,and Porterfields ..Big Difference! They should fit with your wheels but please contact Randall @Autowerksexpress.com
Autowerksexpress.com has them on special ..