Why does my front brake disc "sing"

[cazmal]

When braking the front disc hums - like when you run a wet finger around the rim of a wine glass - does this mean that the disc may be warped or is there another explanation please?

It's a Honda CBF600, 2006 ABS model.

Any help welcome - thanks.

Caroline

[Kwaks]

If there is a constant hum then no, no warping.

As long as there is plenty of meat left on the pads, and the brakes are doing the job, then I wouldn't worry about it
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[gazzeh]

Should not be too much of a problem - but is always worth checking what could save your life! Whip the pads out and see if there is any defects/wear

[The Artist]

As above, is it is just when braking and constant don't worry.

If you want to stop it, you can smear copper grease on the back of the pads when you next change them. Absorbs the vibrations which make the noise.

[prawny1]

try popping your caliper off and greasing all the slides etc, then with some copper grease smear a thin layer on the back of the pads (the side that touches the caliper not the disc) and the edges of the pad that touches the caliper(sliding surface)

[chris-red]

I means it's made of crystal.
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[T0MMY]

You're not confusing this with the sound a floating brake disc makes naturally under braking are you?
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[cazmal]