Rear Brake Rotor For Audi

For Audi sedans and wagons, the rear brake system undertakes auxiliary braking force, body stability control during cornering, and parking brake functions. Unlike front rotors that bear most of the braking load, rear rotors operate under relatively lower thermal stress but have stricter requirements for braking smoothness, noise control, and compatibility with parking brake mechanisms. As service time extends, worn or slightly deformed original rear rotors often cause pedal vibration, parking brake slippage, or abnormal braking noise that affects ride comfort.
Our 8W0615601K rear brake rotor is manufactured in strict accordance with original equipment specifications, adopting premium high-carbon cast iron with a fully uncoated surface on both friction working areas. Designed as a direct bolt-on replacement for compatible Audi models, it delivers consistent braking feel, reliable parking brake performance, and long service durability, making it a cost-effective choice for auto repair shops, parts distributors, and vehicle owners pursuing factory-match replacement.

Tailored for Audi rear axle applications corresponding to OEM part number 8W0615601K, this brake rotor is produced with full reference to original factory dimensional parameters, with all critical tolerances controlled within micron-level ranges. Key dimensions including outer diameter, total thickness, center bore diameter, bolt circle pattern, and hub mounting face flatness all follow 1:1 OE design standards.

Beyond basic mounting dimensions, we specially calibrate the inner cylindrical surface for the drum-in-hat parking brake to match the original parking shoe size precisely. This ensures full, even contact between the parking shoe and the rotor inner wall, avoiding insufficient parking braking force, one-sided wear, or parking brake noise caused by size mismatch.

The precision-machined form factor eliminates the need for any secondary processing, shimming, or modification during installation. It works perfectly with factory rear brake calipers, dust shields, wheel hubs, and original parking brake components, avoiding common fitment issues such as caliper interference, uneven pad contact, or parking mechanism jamming. This rotor is interchangeable between the left and right rear wheels, enabling a straightforward, one-time installation that restores factory-level braking alignment.

• Given that the rear brake assembly is closer to the passenger compartment, minor vibration or noise is more easily perceived by occupants. We implement strict machining and quality inspection processes for every 8W0615601K rear rotor to ensure excellent NVH (Noise, Vibration, Harshness) performance.
• All friction surfaces are processed with high-precision CNC grinding, with surface roughness strictly controlled within the OE-specified range to ensure smooth, uniform contact with brake pads. We conduct 100% detection of end runout and thickness variation to guarantee that both friction surfaces are perfectly parallel, effectively suppressing brake pedal vibration and steering wheel jitter during braking.
• Each rotor also undergoes individual dynamic balance correction to eliminate weight unevenness that causes high-speed vibration. In addition, we test the concentricity of the inner parking brake surface and the outer friction surface to ensure coaxial rotation, avoiding parking brake jitter or abnormal noise during parking operation.
• As an uncoated cast iron product, it follows the exact same surface finish standard as original equipment rotors, with no additional treatments that would alter friction characteristics or cause compatibility issues with factory brake pads and parking shoes.

This brake rotor cross-references to OEM part number 8W0615601K, and is designed for rear axle installation on compatible Audi passenger car models. It is interchangeable between the driver-side and passenger-side rear wheels, and two rotors are required for a complete rear axle replacement.

To ensure 100% fitment accuracy, please verify your original factory part number, vehicle model year, and specific trim configuration before placing an order. For wholesale buyers and auto repair shops that serve multiple vehicle configurations, you may provide your customer's vehicle VIN to our technical support team, and we will conduct professional fitment verification to help you avoid ordering errors.

Professional Installation Recommendations

• To ensure optimal braking performance and safety, we strongly recommend installation by a certified automotive technician. Before mounting the rotor, thoroughly clean the wheel hub mounting surface, center bore pilot, and lug bolt seating areas to remove all rust, dirt, and corrosion debris. A clean, flat mounting surface is essential to prevent end runout and brake judder after installation.
• We also recommend inspecting the parking brake shoes and related hardware during replacement, and replacing rear brake pads synchronously to ensure matched friction performance and even wear. After installation, adjust the parking brake mechanism according to factory specifications to ensure proper parking braking force.

Break-In Procedure & Daily Maintenance

After installation, complete a standard bed-in procedure for the driving brake: perform 8 to 10 gradual, moderate braking stops from moderate speeds, avoiding heavy emergency braking during the first 300 to 500 kilometers of use. This will form a uniform friction transfer layer on the rotor surface for optimal braking performance and noise control.

For daily use and maintenance:

• Do not spray cold water directly onto hot brake rotors immediately after high-speed driving or continuous braking, as sudden temperature changes can cause thermal shock and structural damage.
• Minor surface rust may form on the uncoated cast iron surface after prolonged vehicle parking, rainy weather, or high-humidity environments. This is a normal physical property of bare cast iron and will be removed naturally after a few light brake applications during normal driving, with no negative impact on braking performance or service life.
• Regularly check rotor thickness during routine maintenance, and replace the rotor promptly when wear reaches the minimum thickness marking on the rotor edge. Also, inspect the inner parking brake surface for abnormal wear or corrosion during regular service.

• All 8W0615601K rear brake rotors are manufactured under ISO 9001 compliant quality management systems and undergo 100% full inspection before shipment to meet international automotive aftermarket quality standards.
• We support worldwide shipping with flexible logistics options including sea freight, air freight, and express delivery to accommodate different delivery timelines and cost requirements for customers in different regions.
• All products come with a formal quality warranty. If manufacturing defects or abnormal wear are confirmed under normal use conditions, we provide comprehensive after-sales solutions including free replacement or refund. Whether you are a professional repair facility sourcing regular replacement parts, an auto parts distributor building inventory, or a vehicle owner seeking a factory-match replacement, we provide professional technical consultation and stable, reliable supply services.