Not sure which 2011 Audi S4 Brakes, Rotors & Pads are right for you? We have over 45 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Jason S from BRANDON, MS said, "They do not come with the pad wear sensor that was needed on my vehicle. They continue to squeal even after being greased on the caliper. The stopping power is great. Direct fit installation. Just wish there was a way to stop the squealing sound. I took it to local brake shop I trust and they said that these pads may stop squealing over time but that they are made to use only with slotted and cross-drilled rotors and that is why they are squealing."