Rotor size sets wheel size on the S5 Sportback
Our recommended rotors for the Audi S5 Sportback (2017–2024) measure 330–420 mm up front and 380–410 mm at the rear. With the rotor we recommend for this car, hardly any front kit clears a 17-inch wheel, some work with 18 inches, and most want 19 to 21; every rear kit needs 19 inches or more. Spoke shape and offset matter too, so send your wheel specs if unsure.
Front calipers run from 4 to 10 pistons, from Brembo, Alcon, AP Racing, Endless, Akebono and TTSPORT; rear kits use a 4-piston caliper from Brembo, Alcon, AP Racing or TTSPORT. Some front kits use genuine Audi calipers made by Akebono or genuine Cadillac or Ford calipers made by Brembo; rear options include genuine Audi or Cadillac calipers made by Brembo. Each kit sits on brackets made for the S5.
Rotors are high-carbon steel or carbon ceramic on both axles. Nearly all kits are street kits; a track version exists on each axle.