Raybestos 980691 Disc Brake Rotor - Rear

Overview of Raybestos Specialty - Street Performance Rotor

The Raybestos Specialty - Street Performance disc brake rotor, part number 980691, is engineered for BMW 135i and 135is models. Designed to meet the demands of street performance driving, this rotor offers reliable braking with precise fitment and durable construction.

• Compatible with BMW 135i and 135is models
• Vented disc brake rotor with drum-in-hat design
• Nominal thickness of 0.866 inches (22.000 mm) and discard thickness of 0.803 inches (20.400 mm)
• Overall height of 3.031 inches (77.000 mm)
• Outside diameter of 12.756 inches (324.000 mm)
• Mounting bolt hole quantity: 5 with 0.580 inch (14.750 mm) diameter
• Smooth surface type for consistent braking performance

Detailed Product Specifications

This Raybestos disc brake rotor features a vented design that enhances heat dissipation during braking, reducing the risk of brake fade under street performance conditions. The drum-in-hat type rotor integrates a parking brake drum, providing a dual-function component suitable for BMW 135i and 135is vehicles. The rotor’s nominal thickness is 0.866 inches (22.000 mm), with a discard thickness of 0.803 inches (20.400 mm), ensuring a clear service limit for safe operation. Its outside diameter measures 12.756 inches (324.000 mm), and the overall height is 3.031 inches (77.000 mm), matching OEM specifications for proper fit and function. The mounting bolt hole circle diameter is 4.724 inches (120.000 mm) with five bolt holes, each 0.580 inches (14.750 mm) in diameter, ensuring secure installation.

Specialty - Street Performance Product Line

The Raybestos Specialty - Street Performance line focuses on delivering rotors designed for drivers who require dependable braking performance in street and light performance applications. This product line balances durability and heat management, making it suitable for BMW 135i and 135is owners seeking OEM-level fitment with enhanced street driving capabilities.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 135i and 135is
• Improves braking consistency during spirited street driving
• Addresses brake fade caused by heat buildup in standard rotors
• Restores proper parking brake function with drum-in-hat design
• Eliminates vibration and noise associated with damaged rotors

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (0.803 inches) before installation
• Clean mounting surfaces to prevent uneven rotor seating
• Torque mounting bolts to manufacturer specifications for secure fitment
• Inspect brake pads and hardware during rotor replacement for optimal performance
• Use proper tools to avoid damage to the vented rotor and drum-in-hat assembly

Quality Assurance and Warranty

Raybestos rotors undergo rigorous quality control to meet OEM standards for fit, form, and function. The Specialty - Street Performance rotors are manufactured with high-grade materials and precision engineering to ensure durability and consistent braking performance. Warranty coverage details should be confirmed with the product documentation or authorized Raybestos distributor.