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The short version

  • If a step feels uncertain, stop and use a qualified bicycle mechanic.
  • Never ride with brakes, steering or wheels that you suspect are unsafe.
  • Use the component manufacturer's instructions for torque settings and model-specific procedures.
01

Before you start

Identify the brake as cable-operated or hydraulic and use the maker's procedure for that exact caliper. Secure the wheel and axle first, inspect pad thickness and rotor condition, and work with clean hands and tools so the friction surfaces remain uncontaminated.

  • Use tools that fit the fastener properly
  • Keep small parts in removal order
  • Do not force a seized or cross-threaded component
  • Check the maker's manual for your exact part
02

Distinguish caliper rub from a braking-system fault

First identify whether the brake is mechanical or hydraulic. Caliper alignment can address light, consistent rotor rub, but it does not repair a hydraulic leak, a spongy or changing lever, a frayed cable, worn pads or a rotor that is visibly damaged.

Seat and secure the wheel using the bicycle maker's method before aligning the caliper. Keep fingers, oils and general-purpose cleaners away from the rotor and pad faces; contamination can reduce braking even when the caliper looks centred.

Watch the gap while the wheel turns. A rotor that deviates sharply, cracked or heat-damaged parts, persistent piston imbalance or a brake that will not develop repeatable lever feel should be assessed by a qualified mechanic.

03

Step by step

  1. 1

    Confirm the wheel and axle are fully seated and secure.

  2. 2

    Inspect the rotor and pads for damage or contamination without touching braking surfaces.

  3. 3

    Loosen the caliper mounting bolts only enough for the caliper to move.

  4. 4

    Centre the caliper using the maker's procedure and retighten evenly.

  5. 5

    Spin the wheel, apply the brake firmly and confirm consistent lever feel.

04

Checks before riding

Apply the lever repeatedly while stationary and confirm its feel and bite point remain consistent. Spin the wheel, check the rotor stays within the caliper without heavy contact, and follow the maker's bedding guidance if new pads or a rotor have been fitted.

  • The wheel and axle are fully secure
  • Lever feel and bite point are repeatable
  • The rotor turns without heavy continuous contact
  • A low-speed brake test is progressive and controlled
05

When to use a bike shop

A hydraulic leak, spongy or changing lever, contaminated pads, damaged rotor, frayed cable or piston that will not move normally is not a simple alignment job. Stop riding and use a qualified mechanic if braking strength or the repair procedure is uncertain.

Primary sources

Check the current guidance

Rules, schemes and product ranges can change. These live links are the authoritative or independent starting points used for this guide.