Raybestos 980485R Disc Brake Rotor - Rear

Overview of Raybestos R-Line Disc Brake Rotor 980485R

The Raybestos R-Line Disc Brake Rotor 980485R is engineered for precision and durability, designed specifically for select BMW models. This vented, drum-in-hat type rotor offers reliable braking performance and is built to meet the demands of vehicles like the BMW 330i and 335i series.

• Vented disc brake rotor with drum-in-hat design
• Overall height: 2.638 inches (67.000 mm)
• Outside diameter: 13.220 inches (335.800 mm)
• Nominal thickness: 0.866 inches (22.000 mm)
• Discard thickness: 0.803 inches (20.400 mm)
• Mounting bolt hole quantity: 5 with 120 mm bolt circle diameter
• Center hole diameter: 2.953 inches (75.000 mm)
• Compatible with multiple BMW models including 330i, 335i, and X1

Raybestos R-Line Product Line Details

The R-Line by Raybestos focuses on delivering rotors that balance performance and longevity for daily driving and moderate performance needs. This line emphasizes quality materials and precise manufacturing tolerances, ensuring consistent fitment and braking efficiency. The 980485R rotor exemplifies these qualities with its vented design and drum-in-hat configuration, suitable for BMW vehicles requiring reliable heat dissipation and integrated parking brake functionality.

Technical Specifications and Features

This disc brake rotor features a vented design that improves heat dissipation during braking, reducing the risk of brake fade. The drum-in-hat type rotor integrates a parking brake drum within the rotor assembly, providing a compact and efficient solution for rear brake systems. With a nominal thickness of 0.866 inches and a discard thickness of 0.803 inches, this rotor maintains structural integrity while allowing for safe wear limits. The 5-bolt mounting pattern with a 120 mm bolt circle diameter ensures secure attachment to compatible BMW hubs.

Compatible BMW Models and Applications

• BMW 330i and 330xi
• BMW 335d, 335i, 335is, 335i xDrive, and 335xi
• BMW X1

This rotor is designed to replace worn or damaged rotors on these specific models, restoring braking performance and safety.

Common Issues Addressed by This Rotor

• Brake rotor warping causing vibration during braking
• Excessive rotor wear below discard thickness
• Reduced braking efficiency due to heat buildup
• Noise or pulsation from uneven rotor surfaces
• Parking brake functionality issues related to drum-in-hat rotor wear

Installation Notes and Tips

Ensure the rotor surface and hub are clean and free of rust before installation. Verify the rotor thickness is above the discard limit of 0.803 inches to maintain safety. Use proper torque specifications for the 5 mounting bolts with a 120 mm bolt circle diameter. It is recommended to replace brake pads simultaneously to optimize braking performance. Check for any signs of uneven wear or damage on the rotor after installation.

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet or exceed OEM specifications, providing consistent quality and fitment. The 980485R rotor undergoes rigorous quality control to ensure durability and performance. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.