Dynamite Friction 631-31108R Disc Brake Rotor - Front Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31108R) is engineered for precision braking performance on select BMW models. Designed with a vented, directional surface, this rotor enhances heat dissipation and braking consistency under demanding conditions.

• Disc type: Vented disc brake rotor with drilled and slotted surface
• Nominal thickness: 30 mm with discard thickness at 28.4 mm
• Overall diameter: 340 mm, height: 73.6 mm
• Bolt hole quantity: 5 with 16.6 mm diameter, bolt circle diameter: 120 mm
• Center hole diameter: 79 mm
• Rust resistant zinc silver hat finish and plain disc finish
• Directional brake surface optimized for improved water and debris evacuation

DFC Brake Rotor - Drilled and Slotted - Silver Product Line

The DFC Brake Rotor - Drilled and Slotted - Silver line from Dynamite Friction focuses on rotors that combine drilled holes and slots to improve brake pad bite and heat dissipation. This product line is designed to reduce brake fade and maintain consistent braking performance, especially suitable for BMW vehicles requiring reliable vented rotors with rust-resistant coatings.

Detailed Product Description

This disc brake rotor features a vented design that promotes airflow to reduce heat buildup during braking. The drilled and slotted surface enhances pad cleaning and gas venting, which helps maintain effective braking under various driving conditions. The rotor’s zinc silver hat finish provides corrosion resistance, extending the rotor’s service life. With a nominal thickness of 30 mm and a discard thickness of 28.4 mm, this rotor meets strict specifications for durability and performance. The 5-bolt pattern with a 120 mm bolt circle diameter ensures compatibility with a range of BMW models including the 3 Series, 4 Series, and M Performance variants.

Compatible BMW Models and Applications

• BMW 118i, 120i, 228i, 230i, 320i, 328i, 330i, 335i, 340i, 428i, 430i, 435i, 440i
• BMW xDrive variants including 228i xDrive, 328d xDrive, 328i xDrive, 330i xDrive, 335i GT xDrive, 335i xDrive, 340i GT xDrive, 340i xDrive, 428i xDrive Gran Coupe, 430i xDrive Gran Coupe, 435i xDrive Gran Coupe, 440i xDrive Gran Coupe
• BMW M135i, M140i, M235i, M240i and their xDrive versions

Common Issues Addressed by This Rotor

• Brake fade caused by excessive heat buildup during aggressive driving
• Reduced braking efficiency due to pad glazing or debris accumulation
• Corrosion and rust on rotor surfaces affecting braking smoothness
• Uneven brake pad wear from inconsistent rotor surface contact
• Vibration or noise caused by warped or damaged rotors

Installation Notes and Tips

Ensure the rotor surface is clean and free of any protective coatings before installation. Verify the bolt hole pattern and center hole diameter match your vehicle’s hub specifications. It is recommended to replace brake pads when installing new rotors to maintain optimal braking performance. Torque all mounting bolts to manufacturer specifications and check for proper rotor runout to avoid vibration issues.

Quality Assurance and Warranty

Dynamite Friction manufactures this rotor to meet or exceed OEM standards for fit, form, and function. The rust-resistant zinc silver coating helps extend rotor life in various environmental conditions. While specific warranty details are not provided, Dynamite Friction products typically undergo rigorous quality control to ensure reliability and durability for BMW brake system applications.