Centric 125.34143 Disc Brake Rotor - Rear

Centric Premium Rear Rotor for BMW

Centric 125 Series High Carbon Alloy Disc Brake Rotors are built for rear brake service where consistent stopping feel, reduced noise, and heat resistance matter. Part number 125.34143 is a vented, smooth-surface rotor with a coated hat finish for BMW applications that call for a 300mm rear disc.

Compatible With BMW 230i, 320i, 328i, 328d, 428i, and related rear brake applications, this rotor uses high carbon alloy metallurgy to improve resistance to cracking and oxidation while helping maintain stable braking performance. The Centric Premium High Carbon Alloy Disc Brake Rotors line is aimed at drivers who want OE-style fitment with upgraded material properties for repeated stop-and-go use.

Key Features

• Part number 125.34143
• High carbon alloy construction for improved thermal stability
• Vented rotor design with straight vane style
• Smooth surface type for consistent pad contact
• Coated hat finish to help resist oxidation
• 5-bolt mounting pattern with 120 mm bolt circle
• 300 mm outside diameter for listed BMW rear brake applications
• Designed to reduce pad squeal with higher-friction European brake pad compounds

Detailed Description

Centric Premium High Carbon Alloy Disc Brake Rotors use an advanced metallurgy that increases carbon, chromium, and molybdenum content for better crack resistance during repeated braking and higher-load driving. That material choice also improves friction characteristics and helps the rotor maintain braking consistency under heat. For BMW rear brake service, 125.34143 is a practical OE-style replacement for vehicles such as the BMW 230i rear, BMW 320i rear, and BMW 328i rear.

This part cross-references Bosch 15705 and Genuine 34216792227 for the same application.

What It Helps Address

• Brake squeal with performance-oriented or European-style pad compounds
• Rotor cracking during repeated stop situations
• Brake fade from heat buildup in rear braking use
• Oxidation on exposed rotor surfaces
• Uneven braking feel from worn rear discs

Installation Notes and Tips

Verify rotor diameter, center hole diameter, and rear brake package before installation. This rotor is listed for rear position only and is specified for BMW applications with 300 mm rear discs, including base brake and single-piston rear caliper configurations where noted. Clean the hub mounting surface before installing part number 125.34143, and inspect pads and caliper hardware for wear at the same time.

Quality Assurance

Centric’s Premium High Carbon Alloy rotor line is engineered with corrosion-resistant alloy content and material properties intended to support stable braking performance in demanding use. The coated hat finish and high-carbon metallurgy add durability-focused details for BMW rear brake replacement service.