Short Answer

Brake noises usually arise from vibrations or rubbing components. In many cases, they are technically caused and not a defect. With a clean setup and systematic inspection, most causes can often be resolved quickly.

1. Classify the Noise

The first step is clear classification. This determines the further approach:

• Noises without braking → usually rubbing (e.g., disc not running freely)

• Noises while braking → usually vibrations (e.g., squeaking, rubbing)

• Normal operating noises → sometimes unavoidable with high-performance brakes

2. Brake Rubbing (without Activation)

Typical cause: components are not running freely.

You should check:

Alignment of the Brake Caliper

• Must be centered and parallel to the brake disc

• Even small deviations can lead to rubbing noises

Brake Disc

• Is it running straight or rubbing at points?

• If there is lateral runout, carefully align or replace

Installation

• Disc tightened evenly and in a cross pattern

• Hub mount clean and flat

Piston Movement

• Pistons must extend and retract evenly

• Sticky pistons lead to constant rubbing

Cleanliness

• Regularly clean brake caliper and piston (water, lint-free cloth)

Fluid Level

• Too much brake fluid can reduce the pad gap

3. Brake Squeaking or Rubbing (while Braking)

Typical cause: vibrations between the pad and disc (slip-stick effect).

You should check:

Pads and Disc

• Worn or glazed → replacement necessary

• Surface smooth/mirrored → indicates overheating

Breaking In

• New pads must be correctly broken in

• Missing break-in often leads to noises

Contamination

• Avoid oil, grease or dirt on pads/disc

• Contamination usually requires replacement

System Play

• Loosening at the wheel, axles, headset, or rear triangle can cause noises

Overheating or Underloading

• Continuous braking generates heat → noises

• Insufficient load can "glaze" pads

4. Influence of the Overall System

Noises often arise not only from the brake itself but also from the interaction of several components.

Possible Influencing Factors:

• Tire pressure and tire profile

• Spoke tension

• Through axles and quick releases

• Frame and bearing stiffness

• Combination of disc, pad, and riding style

Important: Even small changes can alter the vibration frequency and reduce noise.

5. What You Should Avoid

• No lubricants or pastes on pads or discs

• No lubrication of brake pistons from the outside

• Do not overfill the brake system

• No unverified combinations of different manufacturers

6. When Should You Act?

• Persistent rubbing despite correct adjustment

• Strong squeaking with power loss

• Metallic noises → check immediately (wear)

• Uncertain braking behavior

Conclusion

In most cases, brake noises can be traced back to simple causes: alignment, wear, or contamination. A structured approach is crucial. Check step by step – this way, you will quickly find the cause and avoid unnecessary parts replacement.

If the problem cannot be clearly identified, an inspection by a professional workshop is advisable. Since the brake is a safety-relevant component, please contact your local specialist dealer or reach out to our Customer Service Team via the service form if you cannot progress on your own. We are happy to assist you in further clarification.