Hello everyone,
I have been doing alot of research about the A6 C6 4.2 quattro brakes and according to the oem specs the A6 C6 4.2 quattro and S6 C6 use the same rear disc. Now that being said does anyone have feedback on what cheap or somewhat cheap upgrades can be done ie. RS6 rears or porsche rears. I know I have the electronic parking brake so I am trying to go the route of maybe just a larger rear disc or slotted rear disc and better pads. The A6 C6 has 330x22mm rears same as the S6 so I am curious if the 335mm RS6 disc will just fit right on or if there would be clearance issues with the extra 5mm. Anyways please lend your expertise. Thanks.