Raybestos 980398 Disc Brake Rotor - Front

Overview of Raybestos 980398 Disc Brake Rotor

The Raybestos Specialty - Street Performance disc brake rotor 980398 is engineered for precise fitment on BMW 525i models. Designed to meet exacting standards, this vented rotor ensures reliable braking performance and durability for street driving conditions.

• Compatible with BMW 525i vehicles
• Vented disc brake rotor for improved heat dissipation
• Overall height: 3.035 inches (77.1 mm)
• Outside diameter: 12.205 inches (310 mm)
• Mounting bolt hole quantity: 5 with 0.570 inch (14.5 mm) diameter
• Nominal thickness: 0.945 inches (24 mm)
• Discard thickness: 0.882 inches (22.4 mm)
• Center hole diameter: 3.113 inches (79.05 mm)
• Mounting bolt hole circle diameter: 4.724 inches (120 mm)
• Conventional rotor type with drum-in-hat design

Detailed Product Description

The Raybestos 980398 disc brake rotor is a vented, conventional rotor designed specifically for the BMW 525i. Its vented construction allows for enhanced heat dissipation during braking, reducing the risk of brake fade under normal street performance conditions. The rotor features a nominal thickness of 0.945 inches (24 mm) and a discard thickness of 0.882 inches (22.4 mm), ensuring a clear service limit for safe operation. With an overall height of 3.035 inches (77.1 mm) and an outside diameter of 12.205 inches (310 mm), this rotor matches OEM specifications for proper fit and function. The 5-bolt mounting pattern with a 4.724 inch (120 mm) bolt circle diameter and 0.570 inch (14.5 mm) bolt hole diameter ensures secure installation on the BMW 525i hub assembly.

This rotor is part of the Raybestos Specialty - Street Performance line, which focuses on delivering reliable braking components tailored for street-driven vehicles. The line emphasizes durability and consistent performance under typical driving conditions without compromising OEM fitment standards.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 525i
• Addresses brake noise and vibration issues caused by uneven rotor surfaces
• Improves heat management to reduce brake fade during street driving
• Restores proper rotor thickness for safe braking performance
• Compatible upgrade for maintaining OEM braking feel and response

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets minimum discard thickness
• Clean mounting surfaces and hub to prevent rotor runout
• Torque mounting bolts to manufacturer specifications for secure fitment
• Inspect brake pads for wear and replace if necessary to ensure optimal rotor performance
• Perform a bed-in procedure after installation to optimize braking efficiency

Quality Assurance and Warranty

Raybestos disc brake rotors undergo rigorous quality control to meet industry standards for durability and performance. The Specialty - Street Performance line is engineered to provide consistent braking characteristics suitable for street use. Warranty coverage details should be confirmed with the product documentation or authorized Raybestos distributors.