Raybestos 580439R Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Buick, Chevrolet, Oldsmobile, and Pontiac

The Raybestos R-Line 580439R disc brake rotor is engineered to meet the braking needs of select Buick, Chevrolet, Oldsmobile, and Pontiac models. Designed as a solid, conventional rotor, it offers consistent performance and durability for vehicles like the Cutlass Supreme, Grand Prix, Lumina, and Regal.

• Solid disc brake rotor with a 10.100 inch (256.55 mm) outside diameter
• Nominal thickness of 0.492 inch (12.5 mm) and discard thickness of 0.429 inch (10.9 mm)
• Overall height measures 1.114 inch (28.3 mm)
• Five mounting bolt holes with a 4.528 inch (115 mm) bolt circle diameter
• Conventional rotor design compatible with stud/lug hole quantity of 5

Raybestos R-Line Product Line Overview

The R-Line by Raybestos is a product line focused on providing reliable, OEM-quality brake components for a range of domestic vehicles. This line emphasizes precise fitment and consistent braking performance, making it suitable for drivers seeking dependable replacement parts. The 580439R rotor exemplifies the R-Line’s commitment to quality and compatibility with popular GM models.

Detailed Product Description and Specifications

This Raybestos R-Line 580439R disc brake rotor is a solid type rotor designed for conventional mounting. It features a 10.100 inch outside diameter and a nominal thickness of 0.492 inch, ensuring proper contact with brake pads for effective stopping power. The discard thickness is 0.429 inch, indicating when the rotor should be replaced to maintain safe braking performance. The rotor’s overall height is 1.114 inch, and it includes five mounting bolt holes arranged on a 4.528 inch bolt circle diameter, matching the factory specifications for compatible vehicles.

Compatible Vehicles and Applications

• Buick Cutlass Supreme
• Chevrolet Lumina
• Oldsmobile Regal
• Pontiac Grand Prix

This rotor is designed specifically for these models, ensuring proper fit and function without modification.

Common Issues Addressed by This Rotor

• Brake pulsation caused by warped rotors
• Reduced braking efficiency due to worn rotor thickness
• Noise and vibration from uneven rotor surfaces
• Overheating and brake fade during extended use
• Corrosion and surface damage affecting rotor integrity

Installation Notes and Tips

When installing the Raybestos R-Line 580439R rotor, ensure the mounting surface is clean and free of rust or debris. Verify the rotor thickness before installation to confirm it meets nominal specifications. Use proper torque settings on the five mounting bolts to avoid rotor warping. It is recommended to replace brake pads simultaneously to ensure optimal braking performance.

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet or exceed OEM standards for fit, form, and function. While specific warranty details are not provided here, Raybestos products typically come with a limited warranty against defects in materials and workmanship. Always consult product documentation or the manufacturer for exact warranty terms.