Raybestos 580449R Disc Brake Rotor - Rear

Overview of Raybestos R-Line Disc Brake Rotor 580449R

The Raybestos R-Line Disc Brake Rotor 580449R is engineered for reliable braking performance on select Buick, Chevrolet, Oldsmobile, and Pontiac models. Designed as a solid, conventional rotor, it meets the specific requirements of vehicles like the Cutlass, Cutlass Supreme, Grand Prix, Lumina, Monte Carlo, and Regal.

• Solid disc brake rotor with conventional design
• Outside diameter: 10.945 inches (278.000 mm)
• Nominal thickness: 0.435 inches (11.050 mm)
• Discard thickness: 0.370 inches (9.400 mm)
• Overall height: 1.086 inches (27.600 mm)
• Mounting bolt hole quantity: 5 with 115.000 mm (4.528 inches) bolt circle diameter
• Stud/lug hole quantity: 5

Detailed Product Description

The Raybestos R-Line 580449R disc brake rotor is a solid rotor designed for conventional mounting on compatible vehicles. Its 10.945-inch outside diameter and 1.086-inch overall height provide the precise fitment needed for proper brake system function. The nominal thickness of 0.435 inches ensures durability and consistent braking, while the discard thickness of 0.370 inches indicates the minimum safe thickness before replacement is necessary. The rotor features five mounting bolt holes arranged on a 115 mm bolt circle diameter, matching the specifications for select Buick, Chevrolet, Oldsmobile, and Pontiac models including the Cutlass, Cutlass Supreme, Grand Prix, Lumina, Monte Carlo, and Regal.

About the Raybestos R-Line Product Line

The R-Line by Raybestos is a product line focused on providing reliable, direct-fit brake components that meet OEM specifications. This line is designed to offer consistent performance and durability for vehicles requiring conventional solid rotors. The 580449R rotor exemplifies the R-Line’s commitment to quality and fitment accuracy for domestic vehicles.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors on Buick Cutlass and Cutlass Supreme
• Restores proper braking performance on Chevrolet Lumina and Monte Carlo
• Addresses brake pulsation and noise issues on Oldsmobile and Pontiac Grand Prix
• Ensures safe stopping power for Pontiac Regal models
• Prevents rotor thickness below discard limits to maintain braking efficiency

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets nominal specifications
• Clean mounting surfaces to prevent uneven rotor seating
• Torque mounting bolts to manufacturer specifications for secure fitment
• Inspect brake pads and replace if worn to avoid premature rotor wear
• Check for proper alignment of the 5-bolt mounting pattern on the 115 mm bolt circle diameter

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The 580449R rotor undergoes rigorous quality control to ensure consistent thickness and durability. While specific warranty details may vary, Raybestos typically offers coverage against defects in materials and workmanship, providing confidence in the product’s reliability for compatible Buick, Chevrolet, Oldsmobile, and Pontiac vehicles.