Dynamite Friction 900-31184D Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Hi-Carbon Alloy GEOMET Coated Rotor

The Dynamite Friction DFC Hi-Carbon Alloy GEOMET Coated Rotor (part number 900-31184D) is engineered for reliable braking performance on select BMW and Mini models. Designed with a vented, directional disc surface and a rust-resistant GEOMET grey coating, this rotor supports consistent stopping power and durability.

• Compatible with BMW 228i xDrive Gran Coupe, M235i xDrive Gran Coupe, X2, and Mini Cooper, Cooper Clubman, Cooper Countryman
• Vented disc brake rotor with directional smooth surface for improved heat dissipation
• Nominal thickness of 30 mm and discard thickness of 28.4 mm for precise wear limits
• Rust-resistant GEOMET grey coating on the hat for corrosion protection
• 5 bolt holes with 16.7 mm diameter and 112 mm bolt circle diameter
• Outside diameter of 360 mm and height of 45.7 mm
• Plain disc finish with a center hole diameter of 67 mm

DFC Hi-Carbon Alloy GEOMET Coated Rotor Product Line Details

The DFC Hi-Carbon Alloy GEOMET Coated Rotor line from Dynamite Friction focuses on rotors that combine high-carbon alloy material with a GEOMET coating on the rotor hat. This combination enhances corrosion resistance while maintaining structural integrity and heat management. The vented design and directional surface optimize braking efficiency and rotor longevity, making it suitable for performance-oriented vehicles like the BMW 228i xDrive Gran Coupe and Mini Cooper series.

Technical Specifications and Features

This disc brake rotor features a vented design to improve airflow and heat dissipation during braking, reducing the risk of brake fade. The directional smooth surface ensures consistent pad contact and braking performance. With a nominal thickness of 30 mm and a discard thickness of 28.4 mm, the rotor provides clear wear limits for maintenance. The GEOMET grey coating on the hat offers rust resistance, extending the rotor's service life. The rotor includes five bolt holes with a diameter of 16.7 mm and a bolt circle diameter of 112 mm, compatible with the specified BMW and Mini models.

Applications and Problem Solving

• Replacement rotor for worn or warped disc brakes on BMW 228i xDrive Gran Coupe and Mini Cooper models
• Addresses brake fade caused by overheating through vented rotor design
• Prevents corrosion-related rotor damage with rust-resistant GEOMET coating
• Restores smooth braking performance by maintaining proper rotor thickness and surface finish
• Compatible with vehicles requiring a directional rotor surface for optimal pad engagement

Installation Notes and Tips

Ensure the rotor is installed with the directional surface oriented correctly according to the vehicle’s rotation direction. Verify bolt hole alignment with the 5-lug pattern and 112 mm bolt circle diameter. Measure rotor thickness before installation to confirm it meets or exceeds the discard thickness of 28.4 mm. Clean the rotor surface to remove any protective coatings or contaminants before mounting to ensure proper pad contact.

Quality Assurance

Dynamite Friction manufactures the 900-31184D rotor to meet OEM specifications for fitment and performance on BMW and Mini vehicles. The use of high-carbon alloy material combined with GEOMET coating supports durability and corrosion resistance. While no specific warranty information is provided, the rotor is designed to maintain consistent braking performance within specified wear limits.