Centric 125.34140 Disc Brake Rotor - Front

Overview of Centric Premium High Carbon Alloy Disc Brake Rotor 125.34140

The Centric Premium High Carbon Alloy Disc Brake Rotor 125.34140 is engineered for precise braking performance on select BMW models. Designed with vented construction and a coated hat finish, this rotor offers reliable heat dissipation and corrosion resistance for consistent stopping power.

• Vented disc brake rotor for improved heat management
• Coated hat finish to resist rust and corrosion
• Nominal thickness of 30.000 mm with discard thickness at 28.400 mm
• Overall diameter of 340.000 mm (13.386 inches)
• Five bolt holes with a 120 mm bolt circle diameter
• Floating mounting type for enhanced rotor alignment
• Smooth surface type for consistent pad contact
• Center hole diameter of 79.000 mm (3.110 inches)

About Centric Premium High Carbon Alloy Disc Brake Rotors

The Centric Premium High Carbon Alloy Disc Brake Rotors line focuses on delivering rotors made from high carbon alloy material, which helps reduce brake noise and vibration while improving rotor durability. This product line features vented rotors with coated hats to extend service life and maintain performance under demanding driving conditions. The 125.34140 rotor exemplifies these qualities, making it suitable for BMW vehicles requiring precise fitment and reliable braking.

Product Details and Specifications

This disc brake rotor measures 340 mm in outside diameter and 73.6 mm in overall height, with a nominal thickness of 30 mm and a discard thickness of 28.4 mm. The vented design enhances cooling by allowing air to flow between the rotor surfaces, reducing the risk of brake fade during extended use. The coated hat finish protects the rotor hub from corrosion, which is especially beneficial in wet or salty environments. The rotor features five bolt holes arranged on a 120 mm bolt circle diameter, compatible with the specified BMW models. The floating mounting type allows slight movement to accommodate thermal expansion and improve rotor alignment.

Compatible BMW Models and Applications

• BMW 228i and 228i xDrive
• BMW 230i and 230i xDrive
• BMW 320i and 320i xDrive
• BMW 328d xDrive, 328i, 328i GT xDrive, and 328i xDrive
• BMW 330e, 330i, 330i GT xDrive, and 330i xDrive
• BMW 335i, 335i GT xDrive, and 335i xDrive
• BMW 340i, 340i GT xDrive, and 340i xDrive
• BMW 428i, 428i Gran Coupe, 428i xDrive, and 428i xDrive Gran Coupe
• BMW 430i, 430i Gran Coupe, 430i xDrive, and 430i xDrive Gran Coupe
• BMW 435i, 435i Gran Coupe, 435i xDrive, and 435i xDrive Gran Coupe
• BMW 440i, 440i Gran Coupe, 440i xDrive, and 440i xDrive Gran Coupe
• BMW ActiveHybrid 3
• BMW M235i, M235i xDrive, M240i, and M240i xDrive

Common Issues Addressed by This Rotor

• Brake rotor warping causing vibration during braking
• Excessive brake noise or squealing
• Reduced braking performance due to worn or thin rotors
• Corrosion and rust buildup on rotor surfaces
• Overheating and brake fade during extended use

Installation Notes and Tips

Ensure the rotor surface is clean and free of contaminants before installation. Verify the rotor thickness is within specifications, replacing if below the discard thickness of 28.4 mm. Use proper torque settings on the five mounting bolts arranged on the 120 mm bolt circle diameter. The floating mounting type requires careful alignment to allow for thermal expansion. This rotor does not include bearings or ABS tone rings, so verify compatibility with your vehicle's braking system.

Quality Assurance and Warranty

Centric Premium High Carbon Alloy Disc Brake Rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The high carbon alloy construction reduces noise and vibration while enhancing rotor durability. While specific warranty details are not provided, Centric products typically come with a limited warranty against defects in materials and workmanship. Always consult product documentation or the manufacturer for exact warranty terms.