Raybestos 980490R Disc Brake Rotor - Rear

Overview of Raybestos R-Line Disc Brake Rotor 980490R

The Raybestos R-Line Disc Brake Rotor 980490R is engineered for precision and durability, designed specifically for BMW 323i, 325i, and 328i models. This conventional rotor meets exacting thickness and mounting specifications to ensure reliable braking performance.

• Compatible with BMW 323i, 325i, and 328i models
• Conventional disc brake rotor design
• Nominal thickness: 0.780 inches (19.800 mm)
• Discard thickness: 0.720 inches (18.300 mm)
• Mounting bolt hole circle diameter: 4.720 inches (119.900 mm)
• Mounting bolt hole diameter: 0.186 inches (4.720 mm)

Technical Specifications and Product Details

The Raybestos R-Line 980490R rotor features a nominal thickness of 0.780 inches (19.800 mm), providing a solid braking surface for consistent stopping power. The discard thickness is set at 0.720 inches (18.300 mm), indicating the minimum safe thickness before replacement is necessary. This rotor uses a conventional design, suitable for vehicles equipped with drum-in-hat or standard rotor setups. The mounting bolt hole circle diameter measures 4.720 inches (119.900 mm), with bolt holes sized at 0.186 inches (4.720 mm), ensuring proper fitment and secure installation on compatible BMW models.

R-Line Product Line Information

The R-Line by Raybestos represents a focused product line within their brake components, emphasizing reliable performance and precise fitment for specific vehicle applications. This line is tailored to meet OEM specifications, providing a balance of quality and value for drivers maintaining BMW 3 Series vehicles such as the 323i, 325i, and 328i. The 980490R rotor is part of this line, designed to deliver consistent braking characteristics aligned with factory standards.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 323i, 325i, and 328i
• Addresses brake pulsation caused by uneven rotor thickness
• Restores braking efficiency when rotor thickness falls below discard limits
• Eliminates noise and vibration related to damaged rotors
• Ensures proper rotor fitment with exact mounting bolt hole specifications

Installation Notes and Tips

When installing the Raybestos R-Line 980490R rotor, verify the rotor thickness before and after installation to ensure it meets nominal specifications. Clean the rotor surface to remove any protective coatings or debris. Use the correct torque specifications for mounting bolts to avoid warping. It is recommended to replace brake pads simultaneously to maintain optimal braking performance. Always inspect related brake components for wear during installation.

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet or exceed OEM standards, ensuring consistent quality and durability. The 980490R rotor undergoes rigorous testing for thickness, balance, and material integrity. While specific warranty details are not provided here, Raybestos typically offers coverage against defects in materials and workmanship. Consult product documentation or Raybestos directly for warranty terms.