Genuine BMW Rear Disc Set (E92 M3)

BMW E92 M3 Genuine Rear Brake Discs

Optimized Balance for the Ultimate Driving Machine

To maintain the legendary 50/50 balance of the E9X M3, your rear braking system must work in perfect harmony with the front. These Genuine BMW Rear Compound Brake Discs (Part Nos. 34212283387 and 34212283388) provide the necessary counter-force to keep the chassis stable under heavy deceleration, ensuring your M3 stays composed through every corner.

Key Specifications

Performance Features

• Lightweight Construction: By utilizing an aluminum center hub (hat) joined to a high-carbon steel friction ring, these discs reduce unsprung mass at the rear axle. This improves suspension response and allows the S65 engine to rotate the wheels with less rotational inertia.

• Effective Heat Dissipation: Just like the fronts, these rear rotors are cross-drilled to vent "boundary layer" gases and prevent brake fade during aggressive driving or track days.

• Precision Parking Brake Integration: Engineered specifically for the E90, E92, and E93 M3, the internal drum surface is machined to exact tolerances for a perfect fit with the factory emergency brake shoes.

• Anti-Corrosion Coating: These genuine rotors come with a specialized grey coating on the hub and outer rim to prevent the unsightly "rust ring" common on lower-quality aftermarket parts.

Why Genuine Rear Rotors Matter?

While the front brakes do the heavy lifting, the rear brakes on the E92 M3 are crucial for the Dynamic Stability Control (DSC) system. Genuine rotors provide the exact friction coefficient the BMW engineers programmed into the safety systems, ensuring that mid-corner corrections are smooth and predictable rather than intrusive.