DuraGo BR901678 Disc Brake Rotor - Rear

Overview of DuraGo BR901678 Disc Brake Rotor

The DuraGo BR901678 is a cast iron vented disc brake rotor designed for select BMW models including the 528i, 528i xDrive, 535d, 535d xDrive, 535i, 535i xDrive, and ActiveHybrid 5. Engineered to meet the demands of these vehicles, this rotor offers reliable braking performance with a conventional, non-directional brake surface.

• Material: Durable cast iron construction
• Vented rotor design for improved heat dissipation
• Nominal thickness: 0.79 inches (20 mm)
• Discard thickness: 0.72 inches (18.4 mm)
• Outside diameter: 12.99 inches (330 mm)
• Overall height: 2.72 inches (69 mm)
• Mounting bolt hole quantity: 5 with 0.65 inch (16.6 mm) diameter
• Conventional rotor type without ABS tone ring
• Non-directional brake surface for versatile installation

Detailed Product Description

The DuraGo BR901678 disc brake rotor is constructed from full cast iron, providing a balance of strength and thermal conductivity essential for effective braking. Its vented design enhances airflow to reduce heat buildup during braking, which helps maintain consistent stopping power and reduces the risk of rotor warping. With a nominal thickness of 0.79 inches and a discard thickness of 0.72 inches, this rotor meets OEM specifications for thickness tolerances, ensuring safe and reliable use throughout its service life.

Measuring 12.99 inches in outside diameter and 2.72 inches in overall height, the rotor fits precisely on the specified BMW models. The 5 mounting bolt holes with a 120 mm bolt circle diameter and 16.6 mm hole diameter provide secure attachment. This rotor does not include an ABS tone ring and features a conventional, non-directional braking surface, allowing for straightforward installation without concern for rotor orientation.

Compatible Vehicles and Applications

• BMW 528i and 528i xDrive
• BMW 535d and 535d xDrive
• BMW 535i and 535i xDrive
• BMW ActiveHybrid 5

This rotor is designed specifically for these BMW models, ensuring proper fitment and performance when replacing worn or damaged rotors.

Common Issues Addressed by DuraGo BR901678

• Brake rotor warping due to heat stress
• Reduced braking efficiency from worn rotor surfaces
• Vibration or pulsation during braking caused by uneven rotor thickness
• Noise issues related to rotor surface imperfections
• Corrosion and surface degradation affecting braking performance (note: this rotor does not have rust-resistant coating)

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Clean mounting surfaces to prevent rotor misalignment
• Torque mounting bolts to manufacturer specifications
• Check brake pads for wear and replace if necessary
• Perform a proper bed-in procedure after installation for optimal braking

Quality Assurance and Warranty

DuraGo manufactures the BR901678 rotor to meet or exceed OEM standards for fit, form, and function. The full cast iron construction and vented design contribute to consistent braking performance. While this rotor does not include a rust-resistant coating, it is engineered for durability under normal operating conditions. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.