What is better - Carbon wheel with aluminum or carbon brake surface?

Carbon Wheels: Aluminum vs. Carbon Brake Surfaces

When choosing carbon wheels, the first key decision is whether to opt for a carbon wheel with an aluminum brake surface or a full carbon brake surface.

Key Differences: Aluminum-Carbon vs. Full Carbon Wheels

• Price: The cost difference between aluminum-carbon and full carbon wheels is relatively small.
• Weight: On average, full carbon wheels are about 190g lighter than aluminum-carbon wheels.
• Stiffness: Modern carbon rims are generally stiffer than aluminum rims.
• Workmanship: High-end carbon wheels (5th generation, as of 2026) offer exceptional quality, with centering deviations below 0.05mm.

Who Should Choose Full Carbon Wheels?

For most hobby cyclists, there are no longer significant disadvantages to full carbon wheels compared to a few years ago. Advances in materials and manufacturing have addressed previous concerns about braking performance and heat resistance.

When to Avoid Full Carbon Rims

• If you frequently switch between wheels with aluminum and carbon brake surfaces, you will need to change brake pads each time. This can be inconvenient.

Heat Management and Braking Considerations

Important: Any carbon rim can overheat if braking is done incorrectly—such as continuous braking on steep descents. Aluminum-carbon wheels can also overheat if used improperly. Carbon conducts heat poorly, which can cause heat to build up in the aluminum layer.

• If your total weight (rider plus bike) is over 100 kg and you plan to ride long mountain descents, consider switching to a road bike with disc brakes and aero wheels. This setup is safer and worry-free for demanding conditions.

Advancements in Full Carbon Rims (2026)

Full carbon rims have improved significantly in the past three years:

• Better braking deceleration and heat resistance
• Use of special fibers (such as basalt) in the braking surface
• More heat-resistant resins and improved brake pads
• Wider rim profiles (wider than 18–20mm) absorb more braking energy
• New manufacturing processes have increased the maximum guaranteed temperature resistance up to 265°C, eliminating the need for additional coatings

Frequently Asked Questions

Is there a big price difference between aluminum-carbon and full carbon wheels?

No, the price difference between aluminum-carbon and full carbon wheels is relatively small in 2026.

Do full carbon wheels have better performance than aluminum-carbon wheels?

Full carbon wheels are generally lighter (by about 190g) and stiffer. Recent advancements have also improved their braking and heat resistance.

Are there any disadvantages to full carbon brake surfaces?

For most riders, there are no longer major disadvantages. However, if you often switch between aluminum and carbon wheels, you must change brake pads each time to avoid damaging the rims.

Can carbon rims overheat during braking?

Yes, improper braking—such as continuous braking on long descents—can overheat any carbon rim. Modern materials and designs have improved heat resistance, but proper braking technique is still important.

Who should consider disc brakes instead?

If your total riding weight is over 100 kg and you plan to ride long mountain descents, disc brakes with aero wheels are recommended for maximum safety and performance.