Dynamite Friction 830-31075R Disc Brake Rotor - Rear Right

Overview of Dynamite Friction DFC Geoperformance Rotor

The Dynamite Friction DFC Geoperformance Rotor - Drilled and Slotted (part number 830-31075R) is engineered for BMW models including the 525xi, 528i xDrive, 528xi, 530xi, and 535i xDrive. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Nominal thickness: 19.9 mm with a discard thickness of 18.4 mm
• Vented rotor design for improved cooling
• Directional slotted and drilled surface for debris removal and heat management
• Rust resistant coating to extend rotor life
• Geospec silver grey hat finish for corrosion resistance and aesthetics
• Five bolt holes with 14.8 mm diameter and 120 mm bolt circle diameter
• Overall diameter of 320 mm and height of 86.1 mm

Detailed Product Description

The 830-31075R rotor from Dynamite Friction’s DFC Geoperformance Rotor - Drilled and Slotted line is designed specifically for select BMW vehicles, including the 525xi, 528i xDrive, 528xi, 530xi, and 535i xDrive. This rotor features a vented design that helps dissipate heat more effectively during braking, reducing the risk of brake fade under demanding conditions. The directional slotted and drilled surface improves water, dust, and gas evacuation from the braking surface, maintaining consistent pad contact and braking efficiency.

The rotor’s nominal thickness is 19.9 mm, with a discard thickness of 18.4 mm, ensuring a long service life while maintaining safety standards. The rust resistant coating and Geospec silver grey hat finish provide additional protection against corrosion, which is especially beneficial in wet or humid environments. The rotor’s 320 mm outside diameter and 86.1 mm height are engineered to match the OEM specifications for the compatible BMW models, ensuring proper fit and function.

Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 525xi, 528i xDrive, 528xi, 530xi, and 535i xDrive
• Improves braking performance by reducing heat buildup and brake fade
• Helps eliminate brake noise and vibration caused by uneven rotor surfaces
• Resists rust and corrosion to extend rotor lifespan
• Maintains consistent braking under wet or dusty conditions with slotted and drilled design

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 18.4 mm before installation. Clean the rotor surface to remove any protective coatings or contaminants prior to mounting. Verify compatibility with your specific BMW model and check bolt hole alignment with the 5-bolt, 120 mm bolt circle diameter pattern. Proper torque specifications should be followed when securing the rotor to avoid warping or uneven wear.

Quality Assurance

Dynamite Friction manufactures the DFC Geoperformance Rotor - Drilled and Slotted to meet or exceed OEM standards for fit, form, and function. The rust resistant coating and vented design contribute to durability and consistent braking performance. Please consult product documentation or contact Dynamite Friction for warranty details related to part number 830-31075R.