ATE SP20183 Disc Brake Rotor - Rear

ATE Coated Rear Brake Rotor for BMW

The ATE Coated Single Pack Rotor SP20183 is a vented rear disc brake rotor built for BMW applications that demand OE-level fit and consistent braking performance. It uses a rust-resistant coating and a non-directional finish to support clean installation and dependable service life.

ATE brake parts are backed by Continental Automotive Systems’ original equipment brake engineering experience, and the ATE Coated Single Pack Rotor line carries that same focus on precision, material quality, and corrosion protection. This SP20183 rotor is a direct-fit choice for rear brake service on select BMW 525i, 530i, and 528i models.

Key Features

• Part number SP20183
• Rear disc brake rotor for select BMW applications
• Vented full cast construction
• Rust-resistant coated surface
• Non-directional disc finish for straightforward service prep
• 320.00 outside diameter with 20.00 nominal thickness
• 5-bolt hole pattern
• Metal rotor construction

Detailed Product Description

ATE designed this coated rotor to meet or exceed OEM specifications for disc brake rotors in North America. The vented design helps manage heat during braking, while the coated surface helps resist corrosion on exposed areas of the rotor. With its full cast construction and precise dimensions, SP20183 is suited for rear brake replacement where consistent pedal feel and rotor fit are important.

Fits 2004-2007 BMW 525i, rear. Fits 2004-2007 BMW 530i, rear. Fits 2008-2009 BMW 528i, rear. This part cross-references Bosch 15010123 and Brembo 09.9425.1X for the same application.

What This Rotor Helps Address

• Rear brake pulsation caused by worn or uneven rotor surfaces
• Corrosion on exposed rotor areas
• Reduced braking consistency from heat-stressed rotors
• Noise or vibration associated with rotor wear
• Service replacement needs on BMW rear brake systems

Installation Notes and Tips

Verify rotor dimensions, bolt pattern, and rear fitment before installation. Clean the hub mounting surface thoroughly to help prevent runout-related brake noise or pedal pulsation. Follow the vehicle manufacturer’s brake service procedures and bed in new pads according to the pad manufacturer’s instructions.

Quality Assurance

ATE is part of Continental Automotive Systems and draws on extensive original equipment brake system experience. The ATE Coated Single Pack Rotor line is engineered with premium materials and process control to support OE-style replacement standards for BMW rear brake service.