Raybestos 5870R Disc Brake Rotor - Rear

Reliable Vented Disc Brake Rotor for Buick, Cadillac, and Oldsmobile

The Raybestos R-Line 5870R disc brake rotor is engineered to meet the braking demands of select Buick, Cadillac, and Oldsmobile models. Designed as a vented rotor, it provides effective heat dissipation and consistent stopping power for vehicles like the Eldorado, Seville, and Riviera.

• Vented disc brake rotor for improved heat management
• Overall height: 1.500 inches (38.100 mm)
• Outside diameter: 10.020 inches (254.500 mm)
• Nominal thickness: 0.492 inches (12.500 mm)
• Discard thickness: 0.429 inches (10.900 mm)
• Five mounting bolt holes with 115.000 mm bolt circle diameter
• Center hole diameter: 2.782 inches (70.650 mm)
• Conventional rotor type compatible with drum-in-hat setups

Detailed Specifications and Design Features

The Raybestos R-Line 5870R rotor features a vented design that enhances airflow between the rotor surfaces, reducing heat buildup during braking. This helps maintain braking performance and reduces the risk of rotor warping. With a nominal thickness of 0.492 inches and a discard thickness of 0.429 inches, this rotor ensures a reliable service life while meeting OEM specifications. The rotor’s 10.020-inch outside diameter and 1.500-inch overall height are tailored for precise fitment on compatible vehicles. The five mounting bolt holes arranged on a 115.000 mm bolt circle diameter provide secure attachment, while the 2.782-inch center hole diameter ensures proper alignment.

Raybestos R-Line Product Line Overview

The R-Line by Raybestos is a product line focused on delivering dependable braking components that meet or exceed original equipment standards. The 5870R rotor is part of this line, offering a balance of durability and performance for vehicles requiring vented rotors. This line is designed to provide consistent braking feel and longevity for a range of domestic luxury and performance vehicles.

Compatible Vehicles and Common Applications

• Buick Allante and Riviera models requiring vented disc rotors
• Cadillac Eldorado, Seville, and Toronado with conventional rotor setups
• Oldsmobile Reatta and Riviera models needing precise rotor fitment
• Replacement for worn or warped rotors causing brake pulsation or noise
• Upgrading rotors to restore braking efficiency and heat dissipation

Installation Notes and Tips

Ensure the rotor surface is clean and free of rust or debris before installation. Verify the mounting bolt hole pattern and center hole diameter match the vehicle hub for proper fitment. It is recommended to replace brake pads simultaneously to maintain optimal braking performance. Check rotor thickness against discard specifications to confirm suitability for reuse or replacement.

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet strict quality standards, ensuring consistent performance and durability. While specific warranty details are not provided here, Raybestos products typically come with a limited warranty against defects in materials and workmanship. Refer to Raybestos documentation for complete warranty information.