Brake-pad visual problem identification guide.

This guide is not designed to replace proper inspection by qualified professionals! We are not responsible for any misdiagnosis occurring as a result of this guide.

Contaminated surface

Check the brake-pad surface for any traces of contamination such as brake-fluids, grease or oil. Contaminated surfaces will greatly reduce the braking performance of affected brake-pads. Be sure to replace the brake-pads.

Uneven wear

Look for deep matching indentations or creases on both the brake-pad and disc rotor, symptoms of uneven wear can include brake noise and vibration when braking. In this situation replace both rotor and brake-pads.

Denaturing

When this occurs the brake-pad surface will have a charred appearance with white edges, this is caused by long exposure to excessive heat such as heavy braking or a faulty brake caliper. Denatured brake-pads have reduced performance and can become brittle and break apart, be sure to change them when this happens.

Tapered Brake-pads

This means on the opposing ends, the thickness differs. Symptoms of tapered brake-pads include uneven braking and brake noise, be sure to inspect your brake caliper as it may be distorted, stuck or have large clearance. Be sure to replace tapered brake-pads with new ones.

Damaged Brake-pads

Inspect the brake-pad for visible damage, this can be caused by excessive heat making the brake-pad become brittle and break apart. It is dangerous to use damaged brake-pads so be sure to replace them. Before replacing them, seek out the cause of excessive heat e.g. faulty brake calipers or unbalanced brake system.

Glazing

When looking at the brake-pad surface, if has a reflective surface. This is a result of excessive heat or continuous hard braking during the bedding-in. Glazed brake-pads have poor braking performance so replace them immediately.

Brake-pad uneven wear

Check both brake-pads to see if uneven wearing is occurring, if one brake-pad is more worn than the other then you will have to replace the brake-pad pair and service the caliper.

Cracked brake-pads

Look for any cracks appearing in the brake-pad, this is caused by improper flexing of the brake pad. Immediately change the brake-pads and service the brake caliper if you find your brake-pads cracking.

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