Audi Audi S8 2012-2018 Brakes Specifications

The 2012-2018 Audi S8 features high-performance brakes with 6-piston front calipers and 4-piston rear calipers. The front brake rotors measure 15.75 inches (400 mm) in diameter, while the rear rotors are 14.37 inches (365 mm). The system uses ventilated and perforated discs for optimal heat dissipation. Brake pads are designed for high friction and durability, compatible with the vehicle's advanced ABS and ESP systems. The brake system is compatible with 20-inch or larger wheels and works seamlessly with the Audi Drive Select dynamic handling system.

Regular brake maintenance for the 2012-2018 Audi S8 includes inspecting brake pads every 10,000 miles, checking rotor thickness every 15,000 miles, and replacing pads when worn below 3 mm. Brake fluid should be changed every 2 years or 24,000 miles. Inspect brake lines annually and replace if signs of wear or damage are present. Ensure proper torque specifications when reinstalling wheels or brake components. Always use Audi-approved parts and follow the factory service schedule for optimal performance and safety.

To replace brake pads, lift the vehicle, remove the wheels, and use a C-clamp to compress the caliper pistons. Remove the caliper bolts and slide off the caliper. Replace the pads and ensure proper alignment. For rotors, remove the caliper and rotor retaining screws, then replace the rotor. Reassemble in the reverse order, ensuring all bolts are torqued to specification. After installation, test the brakes by driving carefully and avoiding heavy braking initially to bed in the new components.

If the brake warning light illuminates, check the brake fluid level and inspect for leaks. Spongy brakes may indicate air in the system, requiring bleeding. Grinding noises suggest worn pads or warped rotors. If the vehicle pulls to one side while braking, check for uneven pad wear or a malfunctioning caliper. Scan for fault codes using an OBD-II scanner and address any issues promptly. Always refer to the factory service manual for detailed diagnostic procedures.

For optimal brake performance, use high-performance brake pads designed for aggressive driving. Ensure proper brake fluid levels with Audi-approved DOT 4 LV fluid. Regularly clean brake components to prevent corrosion. When driving spiritedly, avoid excessive heat buildup by using engine braking and downshifting. After installing new pads or rotors, perform a proper bed-in procedure by making several moderate stops from 30-40 mph without coming to a complete halt. This ensures even pad transfer and optimal braking efficiency.