2025-2026+ BMW X3 M50 (G45) Carbon Ceramic Brake Rotors 7 Series Straight physics: a cold carbon-ceramic

Straight physics: a cold carbon-ceramic disc bites a little less than cold iron until it warms

The rotors also cut rotating and unsprung mass over the factory iron discs

You feel it most in transitions and in how the car settles after a bump

They also cut unsprung and rotating weight versus iron

since caliper radial position is fixed

2025-2026+ BMW X3 M50 (G45) Carbon Ceramic Brake Rotors 7 Series Straight physics: a cold carbon-ceramicReal Customer Builds & Reviews View All Will This Fit My Car? Direct Replacement CCB Discs (Retain Factory Calipers) for the 2025 2026+ BMW X3 M50 (G45). Factory rotor specifications and the smallest wheel that clears each trim: Trim Front Rotor (Factory) Rear Rotor (Factory) Min. Wheel Size X3 M50 374mm, 395mm 345mm 20" Keep Your Factory Calipers? The rule is simple: front factory calipers must be 4 piston or more; the rear has no limit. A 1 or 2