DFC 12-21 BMW 428I xDrive Coupe & CONVERTIBLE Front Hi-Carbon Alloy Geomet Coated Rotor

This is a DFC front brake rotor, part number 900-31108, designed for a wide range of BMW 2, 3, and 4 Series vehicles. If you're looking to replace worn-out rotors on your BMW 228i, 328i, or 428i, this rotor offers a solid option for restoring stopping power and ensuring a smooth ride. It's built with G3000/G11H18 iron castings, which are known for their strength and stability, helping to prevent warping under normal driving conditions.

DFC has paid attention to the details here. The vane configuration matches the original equipment (OE) setup, which is crucial for effective heat dissipation. Too much heat can lead to brake fade, so having the right vane design helps keep your brakes working consistently. Plus, each rotor is precision mill-balanced to eliminate vibrations, so you won't feel any shimmy through the steering wheel when you apply the brakes. The Geomet coating is a nice touch, offering good protection against rust and corrosion, especially important for the front rotors that see a lot of road spray.

You'll also notice the fine-turned finish, which helps with the initial bedding-in process between the new rotor and your brake pads. This means you can get back to confident braking sooner. This rotor is manufactured to strict tolerances for disc thickness variation and lateral runout, ensuring it spins true and contributes to a stable braking feel.