Introduction
Hydraulic disc brakes have become the standard on high-end road bikes. More powerful and progressive than rim brakes, they nonetheless require specific maintenance. Here is the complete guide.
Regular Maintenance
Brake Pads
Check the thickness of the brake pads regularly. Replace them when the friction material thickness falls below 1 mm. Worn pads reduce braking power and can damage the rotor.
Rotors
Inspect the rotors for deep scratches or excessive wear. A worn rotor (less than 1.5 mm thick) should be replaced.
Hydraulic Fluid
The fluid (mineral oil or DOT depending on the brand) degrades over time. An annual bleed is recommended to maintain optimal performance.
Caliper Adjustment
A misaligned caliper causes permanent rubbing of the rotor against the pads. To center it:
- Loosen the caliper mounting bolts
- Squeeze and hold the brake lever
- Retighten the caliper bolts
- Release the lever and check for any rubbing
Bedding-in New Pads
After replacing pads, perform 10-15 progressive stops from 30 km/h to bed in the pads and optimize their performance.
Conclusion
Well-maintained disc brakes are a guarantee of safety and performance. Like our supports David & Clément, they deserve regular attention.