Dynamite Friction 631-31089L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31089L) is engineered for precision braking performance on select BMW models. Designed with a vented, directional surface, this rotor enhances heat dissipation and braking consistency for vehicles such as the BMW 320i, 328i xDrive, and 430i Gran Coupe.

• Disc type: Vented disc brake rotor with drilled and slotted surface
• Nominal thickness: 23.8 mm with discard thickness at 22.4 mm
• Overall height: 73.6 mm and outside diameter: 312 mm
• Bolt hole quantity: 5 with 14.5 mm diameter, bolt circle diameter: 120 mm
• Rust resistant zinc silver hat finish with plain disc finish
• Directional brake surface optimized for improved water and debris evacuation

Detailed Product Features and Specifications

This DFC Brake Rotor - Drilled and Slotted - Silver is constructed with a vented design to improve airflow and reduce heat buildup during braking. The rotor features a drilled and slotted surface that helps maintain clean pad contact by channeling away dust, gases, and moisture. The zinc silver coating on the hat provides corrosion resistance, extending the rotor's service life. With a bolt hole diameter and stud/lug hole diameter of 14.5 mm and a bolt circle diameter of 120 mm, this rotor is engineered to fit securely on compatible BMW models. The directional surface pattern is designed to optimize braking performance under various driving conditions.

Compatible BMW Models and Applications

This rotor is compatible with a range of BMW vehicles, including but not limited to the 220i, 228i xDrive, 230i, 320i xDrive, 328d, 328i GT xDrive, 330i, 428i Gran Coupe, 430i xDrive Gran Coupe, and X1 models. The part number 631-31089L ensures precise fitment for these vehicles, providing reliable braking performance tailored to BMW's specifications.

Common Issues Addressed by This Brake Rotor

• Brake fade caused by excessive heat buildup during aggressive driving
• Uneven brake pad wear due to poor rotor surface design
• Corrosion and rust on rotor surfaces affecting braking efficiency
• Reduced braking performance in wet or debris-prone conditions
• Vibration or noise caused by warped or damaged rotors

Installation Notes and Tips

Ensure the rotor is installed on a clean, debris-free hub surface to maintain proper alignment. Torque all bolts to manufacturer specifications using a star pattern to evenly distribute pressure. It is recommended to replace brake pads simultaneously to optimize braking performance. Verify compatibility with your specific BMW model and drivetrain configuration before installation.

Quality Assurance and Warranty

Dynamite Friction's DFC Brake Rotor line is manufactured to meet or exceed OEM standards for durability and performance. The rust-resistant coating and vented design contribute to long service life under normal operating conditions. Please refer to Dynamite Friction's warranty policy for detailed coverage information related to this part number 631-31089L.