Raybestos 56998R Disc Brake Rotor - Front

Overview of Raybestos R-Line Disc Brake Rotor 56998R

The Raybestos R-Line Disc Brake Rotor 56998R is engineered for reliable braking performance on select Buick and Pontiac vehicles. Designed specifically for the Buick Aztek and Pontiac Rendezvous, this vented rotor meets precise specifications to maintain optimal stopping power and durability.

• Compatible with Buick Aztek and Pontiac Rendezvous models
• Vented disc brake rotor for improved heat dissipation
• Overall diameter of 10.83 inches (275.1 mm) ensures proper fitment
• Mounting bolt hole quantity: 5 with 0.557 inch (14.15 mm) diameter
• Nominal thickness of 1.185 inches (30.1 mm) with discard thickness at 1.063 inches (27.0 mm)
• Center hole diameter of 2.798 inches (71.05 mm) for accurate hub alignment
• Conventional rotor type with 5 stud/lug holes

Raybestos R-Line Product Line Details

The R-Line by Raybestos is a product line focused on delivering dependable brake components that meet or exceed OEM specifications. This line emphasizes consistent quality and fitment, making it suitable for drivers seeking reliable replacement parts for their vehicles. The 56998R rotor exemplifies the R-Line’s commitment to precision engineering and durability for disc brake systems.

Technical Specifications and Features

This disc brake rotor features a vented design that enhances cooling during braking, reducing the risk of brake fade under normal driving conditions. The rotor’s overall height measures 2.04 inches (51.8 mm), and it includes five mounting bolt holes arranged on a 4.528 inch (115 mm) bolt circle diameter. The nominal thickness of 1.185 inches (30.1 mm) ensures structural integrity, while the discard thickness of 1.063 inches (27.0 mm) indicates when replacement is necessary to maintain safe braking performance.

Applications and Problem Solving

• Replacement for worn or warped rotors on Buick Aztek and Pontiac Rendezvous
• Addresses brake noise and vibration issues caused by uneven rotor surfaces
• Improves heat dissipation to reduce brake fade during extended use
• Restores proper rotor thickness for consistent brake pad contact
• Ensures correct fitment with 5-lug bolt pattern and center hole dimensions

Installation Notes and Tips

• Verify rotor dimensions against vehicle specifications before installation
• Ensure mounting surfaces are clean and free of debris for proper rotor seating
• Torque mounting bolts to manufacturer-recommended specifications
• Inspect brake pads and replace if worn to optimize rotor performance
• Check for proper rotor runout to avoid vibration after installation

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet stringent quality standards, ensuring consistent performance and durability. While specific warranty details for part number 56998R should be confirmed with the supplier, Raybestos typically offers coverage against defects in materials and workmanship. This rotor is designed to provide reliable braking performance when installed and maintained according to vehicle manufacturer guidelines.