Dynamite Friction 631-31045R Disc Brake Rotor - Rear Right

Overview of the DFC Brake Rotor for BMW Z3

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31045R) is engineered specifically for the BMW Z3. This solid disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW Z3 models
• Solid rotor with drilled and slotted surface
• Nominal thickness of 10 mm and discard thickness of 8.4 mm
• Zinc silver hat finish with rust-resistant coating
• 5 bolt holes with 14.6 mm diameter and 120 mm bolt circle diameter
• Overall diameter of 272 mm and height of 83.2 mm
• Directional brake surface for optimized braking

Details on the DFC Brake Rotor - Drilled and Slotted - Silver Line

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on rotors that combine drilled holes and slots on the braking surface. This design improves water and gas evacuation during braking, reducing fade and maintaining consistent performance. The silver zinc coating on the rotor hat provides corrosion resistance, extending the rotor's service life. This rotor line is tailored for drivers seeking reliable braking components with enhanced heat management.

Technical Specifications and Features

This disc brake rotor is a solid type with a 272 mm outside diameter and an overall height of 83.2 mm. It features a nominal thickness of 10 mm and a discard thickness of 8.4 mm, ensuring clear service limits for safe operation. The rotor includes five bolt holes, each 14.6 mm in diameter, arranged on a 120 mm bolt circle diameter, matching the BMW Z3's hub specifications. The center hole diameter is 75 mm, and the rotor surface is directional with both drilled holes and slots to improve braking efficiency and heat dissipation. The rotor hat is finished in zinc silver with a rust-resistant coating to protect against corrosion.

Applications and Problem Solving

• Replacement rotor for worn or warped BMW Z3 brake rotors
• Improves heat dissipation to reduce brake fade during spirited driving
• Enhances water and debris evacuation for consistent braking in wet conditions
• Restores braking performance compromised by rotor surface damage
• Provides corrosion resistance to extend rotor lifespan

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 8.4 mm before installation. Clean the rotor surface to remove any protective coating residue before mounting. Verify bolt hole alignment with the BMW Z3 hub using the 5-bolt, 120 mm bolt circle pattern. Properly torque lug nuts to manufacturer specifications to avoid rotor warping. Directional rotors must be installed with the correct rotation direction for optimal performance.

Quality Assurance and Warranty

Dynamite Friction manufactures the 631-31045R rotor to meet OEM specifications for the BMW Z3. The rust-resistant zinc silver coating and precise machining ensure durability and consistent braking performance. Warranty details are provided by the manufacturer and should be confirmed at the time of purchase.