Front Disc brake noisy

[fraz101]

Ok so my 2021 Giant TCR Pro 1 developed a very noisy front brake around 6 weeks ago.

I removed the pads (K04S metal) and they looked contaminated,tried everything to cure it,burning,sanding etc,including the disc,nothing worked.

So I bought a set of L05A resin pads,sanded and cleaned the disc with IPA, and fitted.

I’ve done a 40 mile ride and another 30mile ride to bed pads in and I still have the noise,not as bad but under heavy braking it’s noisy.

I’ve ensured the calliper isn’t dripping fluid (it isn’t)

Do you think the disc is possibly warped?

Or am I being impatient? Should I expect some noise whilst the pad beds into the disc?

 

[vickster]

Rotor contaminated?
Some disc brakes are just noisy!

 

[fraz101]

Rotor contaminated?
Some disc brakes are just noisy!

Disc has been sanded, cleaned, de greased,

only started around 6 weeks ago

 

[iluvmybike]

Check that the caliper is central over the disk - if it is off to one side then that could cause the noise issue

 

[fraz101]

Check that the caliper is central over the disk - if it is off to one side then that could cause the noise issue

Yeah I loosened the calliper bolts and pressed brake and re tightened

 

[Deleted member 121159]

If it's squealing and vibrating, it might be worth having a look at this video:

View: https://youtu.be/nHtpxv3CFXk

As you said, a warped rotor seems to contribute to noise as well.

 

[bobzmyunkle]

I’ve ensured the calliper isn’t dripping fluid (it isn’t)

It only takes a very small leak. Dab a tissue on the back of the pad. That should show any leakage.

 

[fossyant]

New bike !

 

[Adam4868]

Similar sought of thing with mine earlier in the year...contemplated throwing the bike over the sea wall a couple of times.Gave up,gave it to a mechanic who changed the leaky caliper.Ever so small leak was the cause.

 

[fraz101]

I’ve jammed the calliper on overnight to see if I can see any leak from the pistons.

 

[fraz101]

No leaks whatsoever with brakes on overnight

The saga continue

 

[Deleted member 26715]

Is the disc tight? remove, refit

 

[vickster]

New bike !

With rim brakes

 

[fraz101]

Is the disc tight? remove, refit

Yes done that 👍

 

[Deleted member 26715]

With rim brakes

Heretic