The DFC geomet-coated front rotor for 2018–2025 BMW 230i is a hi‑carbon alloy replacement rotor treated with Geomet corrosion protection. Built from G3000/G11H18 iron castings with OE vane configuration, it is precision mill‑balanced and fine‑turned (16 RMS) to aid initial pad break‑in. Manufacturer tolerances list tight DTV and lateral runout specifications for consistent stopping feel.
DFC 18-25 BMW 230I Front Hi-Carbon Alloy Geomet Coated Rotor