Quick and smooth stopping depends on the condition of each 2015 Audi S5 brake rotor. The pads grip these discs when you press the brake pedal to generate friction between the rotors and the friction surface on the pads. If your vehicle isn't stopping like it used to, it's time to inspect and potentially replace old discs. Buy direct-replacement 2015 S5 brake rotors online and get free shipping with next day delivery, or pick up your purchase today at an AutoZone near you.