StopFlex high-performance carbon ceramic brake rotor.

BMW M235i (F44) Gran Coupe Carbon Ceramic Brakes Kit

Email us your car model and wheel size. We’ll match you with the ideal kit and price!

Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.

About the Disc
Customer Cases

2020-2026 BMW M235i (F44) Gran Coupe Carbon Ceramic Brake Kits

The F44 M235i Gran Coupe is a compact AWD four-door with a front-heavy, fast-road character and firm daily-driver duty cycle. Owners usually want sharper repeat-stop confidence and lower long-term rotor wear without making cold street use annoying.

Body style: Gran Coupe
Front rotor reference: M235i: 360mm
Rear rotor reference: M235i: 330mm

This is an OEM-size replacement kit. The rotors are built to the factory rotor spec and install with the factory caliper when the front caliper is a fixed design and the rotor spec matches. The included pad shape matches the OEM pad shape. If the car uses aftermarket calipers such as Brembo, AP Racing, Alcon, or Wilwood, provide the exact caliper model and StopFlex can supply the matching pad shape. Direct replacement is not confirmed if the front caliper is floating, or if the car already runs a non-OEM-offset rotor and the actual rotor dimensions cannot be supplied.

Confirm whether you are keeping the factory M235i calipers or matching an aftermarket caliper bracket set before ordering.
Choose rotor size around your real use: stock-size simplicity for street, larger thermal headroom only if the car sees repeated hard runs.
Wheel clearance matters on the F44, especially if you run winter wheels or tighter-spoke 18s.
This platform is often street-driven, so cold first-stop feel and noise tolerance should matter as much as outright peak braking.
If you do mountain runs or back-to-back pulls, prioritize heat capacity and airflow rather than assuming the smallest setup is enough.

Why StopFlex CCB

Lightweight

Half the Weight, Sharper Handling. StopFlex carbon-ceramic rotors shed roughly half the mass of equivalent iron discs. This massive drop in unsprung weight instantly transforms your chassis, delivering sharper turn-in response and a significantly more refined road feel.

High-Temp Resistance

Minimal Brake Fade at 900°C (1652°F). While traditional iron rotors severely fade under heavy track loads, our CCB matrix holds a stable 0.30μ friction coefficient even at 900°C (1652°F). You get consistent, predictable stopping power when things get dangerously hot.

Corrosion Resistance

100% Rust-Free Durability. Say goodbye to flash rust after a car wash or heavy rain. The carbon-silicon carbide material is naturally impervious to corrosion, ensuring your brake rotors look completely clean and pristine no matter the weather conditions.

Long Lifespan

250,000+ km (155,000+ mi) Lifespan. Iron rotors typically require replacement around 100,000 km (62,000 mi). In normal street driving conditions, a StopFlex CCB rotor can easily last 250,000 to 300,000 km (155,000 to 186,000 mi), effectively outlasting the vehicle itself.

Ultra-Low Dust

Ultra-Low Visible Brake Dust. Heavy black dust destroying your wheel finish is a thing of the past. When paired with our matched StopFlex pads, these rotors generate virtually zero visible brake dust, keeping your premium wheels spotless for much longer.

Premium Visual Finish

Premium Mirror-Like Finish. StopFlex utilizes a patented ceramic formula that cures with a distinct crackle pattern. The surface is machined dead-smooth for high reflectivity, providing a premium aesthetic behind open wheels under the right lighting.

High Normal-Temp Friction

Strong Initial Bite (0.40μ+). With matched StopFlex pads, normal-temperature friction can exceed 0.40μ for a firmer pedal feel and strong initial bite.

Long-Fiber Construction

Continuous Long-Fiber Strength. StopFlex uses long-fiber construction, which is stronger than the chopped-fiber CCM used in most OEM carbon-ceramic rotors.

Cold First-Stop Confidence

Reliable Cold-Bite at -20°C (-4°F). Coated street rotors still deliver normal first-stop braking at -20°C (-4°F). Uncoated motorsport rotors are the exception.

Important heat note

Carbon ceramic does not shed heat as fast as steel. Long hard driving can heat-soak the rest of the brake system, including fluid, seals, and nearby parts. Unless the car already has strong brake cooling, or you plan to upgrade brake cooling, prolonged aggressive driving is not recommended.

Rotor options

Street Spec

Ceramic coating + cross-drilled face + large cooling channels.

360/330 keeps the F44 M235i close to its factory sizing and is the cleanest choice for daily-driven cars.

Track-Day Spec

Ceramic coating + blank face + honeycomb cooling channels.

A mild front upsize is the better pick if your M235i sees repeated hard canyon or occasional track sessions.

Motorsport Spec

No coating + blank face + honeycomb cooling channels. Not for normal street use.

Go largest only for sustained high-heat use with confirmed wheel, caliper, and cooling support on this chassis.

Pads

Item	Details
Pad shape	The included StopFlex pad shape matches the OEM pad shape used by the retained caliper.
Aftermarket calipers	Provide the exact caliper model and StopFlex can supply the matching pad shape.
Pad details	For compound details and pad-specific parameters, see the StopFlex Ceramic Brake Pad for CCB Rotor product page.

What’s included

Item	Included
CCB rotors	Full-car set
CCB brake pads	Full-car set
7075 aluminum floating rotor hats	Full-car set
Stainless floating hardware	Full-car set
Order scope	Default listing includes front set + rear set. Front-only or rear-only can be ordered separately.

FAQ

Can I upgrade my BMW M235i (F44) Gran Coupe to a StopFlex carbon ceramic brake kit while keeping the factory calipers?

Usually yes if the kit is built around the factory M235i caliper and exact rotor hat offset, but that fitment must be confirmed before ordering. If you already run an aftermarket big-brake kit, compatibility depends on that caliper's mount, pad shape, and rotor dimensions.

What is the correct StopFlex carbon ceramic brake size for my BMW M235i (F44) Gran Coupe with 360mm front and 330mm rear brakes?

For most road cars on this exact row, the safest choice is the factory-size 360mm front and 330mm rear package. Move larger only if you know your wheel clearance and are buying for repeated high-heat use rather than normal street driving.

Is a StopFlex carbon ceramic brake kit a good daily-driver upgrade for the BMW M235i (F44) Gran Coupe, including cold first stops?

Yes, if your priority is cleaner wheels, lower wear, and a more premium road-car setup rather than chasing track-only bite. For a mostly street-driven F44, you should choose a street-biased setup so cold first-stop behavior stays predictable.

Does my BMW M235i (F44) Gran Coupe need extra cooling if I upgrade to a StopFlex carbon ceramic brake kit for prolonged hard use?

For normal street use, usually no. For repeated downhill runs, Autobahn-style high-speed braking, or track sessions, better ducting and clean airflow are still smart because this chassis can build front brake heat quickly.

Need fitment confirmation?

Send the exact vehicle details and current brake setup before ordering.

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