Dynamite Friction 631-31158L Disc Brake Rotor - Rear Left

Overview of DFC Brake Rotor - Drilled and Slotted - Silver

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31158L) is engineered for reliable braking performance on select BMW and Mini models. Designed with a directional slotted and drilled surface, this rotor enhances heat dissipation and braking consistency for vehicles like the BMW 228i Gran Coupe and Mini Cooper Countryman.

• Directional slotted and drilled disc surface for improved heat management
• Nominal thickness of 20 mm with discard thickness at 18.4 mm
• Rust-resistant zinc silver hat finish for corrosion protection
• 5 bolt holes with 16.7 mm diameter and 112 mm bolt circle diameter
• Outside diameter of 300 mm and height of 50.6 mm
• Center hole diameter of 67 mm for precise fitment
• Compatible with BMW and Mini models including 228i Gran Coupe, X1, X2, and Cooper Clubman

Product Line Details

The DFC Brake Rotor - Drilled and Slotted - Silver is part of Dynamite Friction's DFC line, which focuses on rotors designed to provide enhanced braking performance through improved heat dissipation and surface durability. The drilled and slotted design helps reduce brake fade and maintain consistent stopping power under demanding conditions, making it suitable for both daily driving and spirited use on compatible BMW and Mini vehicles.

Technical Description and Specifications

This disc brake rotor features a directional surface with both drilled holes and slots, which work together to evacuate gases, dust, and water from the braking surface. The rotor's nominal thickness is 20 mm, with a discard thickness of 18.4 mm, ensuring a long service life before replacement is necessary. The zinc silver coating on the hat area provides rust resistance, helping to maintain structural integrity and appearance over time. With a 5-lug bolt pattern and a bolt circle diameter of 112 mm, this rotor fits securely on the specified BMW and Mini models. The rotor's outside diameter measures 300 mm, and the height is 50.6 mm, matching OEM specifications for proper fit and function.

Applications and Problem Solving

• Reduces brake fade caused by overheating during aggressive driving or heavy braking
• Improves braking response and consistency in wet or dusty conditions
• Prevents rust and corrosion on the rotor hat for extended durability
• Maintains proper braking performance on BMW 228i Gran Coupe and Mini Cooper models
• Replaces worn or damaged rotors to restore factory braking characteristics

Installation Notes and Tips

Ensure the rotor is installed on compatible vehicles such as BMW 228i Gran Coupe, 228i xDrive Gran Coupe, Mini Cooper Clubman, and others listed in the fitment. Verify the bolt pattern and rotor dimensions before installation. It is recommended to inspect brake pads and hardware during rotor replacement to maintain optimal braking system performance. Proper torque specifications should be followed when securing the rotor to the hub.

Quality Assurance

Dynamite Friction manufactures the DFC Brake Rotor - Drilled and Slotted - Silver to meet or exceed OEM standards for fit, form, and function. The rust-resistant coating and precise machining contribute to consistent braking performance and durability. While specific warranty details are not provided, Dynamite Friction products are generally backed by quality control processes to ensure reliability on BMW and Mini vehicles.