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Loud Front Brake Squeek Attkd Rotors

_GTR_
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_GTR_ Enthusiast

_GTR_

Posted
Posted

I just got ATTKD 324mm front brake rotors fitted and everytime I brake there is a loud squeek, It still happens even when there warm. I'm using Bendix Ultimate Pads about 90% left on them with stock brembo calipers. Just wondering if they need to wear in and the squeek will stop or if it's somthing more serious.

Duncan Grand Master

Duncan

Posted
Posted

whenever i ask mechanics about it, i get told if your not using genuine then deal with it.

I don't agree with this

....I had to use the Nissan brake grease on the shims and the problem went away.

That will often solve the issue.

I would follow this process.

1/ pull the pads out and rotors off, and clean everything THOROUGHLY with brake cleaner. You might need a stiff brush to dislodge old dust. Dust between the pads and brake cylinders, between the pad shims (you did keep them, right?), and where the pads are held in the calipers (eg sides, springs, pins etc) is what causes the vibration/noise

2/ lightly resurface the pads. Easiest is a bench grinder (take it very easy!), harder is hand sanding and least effective is rubbing it on some rough concrete.

3/ reassemble the pads using all shims. use a little copper grease or anti-squeal between each pad/shim/cylinder layer

4/ head out to somewhere open and quiet to bed them in again. 3-5 stops from about 80 down to about 20 to get them nice and toasty, and then drive slowly for about 5 min with no or minimal braking to let them cool again. You can tell when they are warm enough because you will start to smell them (you may also see some smoke depending on the pad and it's coating).

I have never had a set of discs and pads that kept on squealing after following these, and that includes race pads on the race car. You certainly do not have to live with it.

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