Car: 2003 G35 Coupe with Sport Package (brembo's)

Had the front rotors and pads replaced at 32k from the stealership. For the past few thousand km's, i hear a very high pitched noise coming from the brakes. This only happens when I'm braking a very very low speeds, upon a complete stop. Under normal braking pressure, there's no noise until i'm at a stop.

Took it to the stealerships twice, first they said the cause is due to the new pads and rotors. Fine, I accepted that. Now, after 8k km, it hasn't gone away. So I took it back to the stealership and they said it's due to rust, so there's no fix for it. Now, I've never had this noise w/ the old set of brakes. Anyone else experience this??

 

sorry, tooootally unrelated, at a glance, i thought ur name was uranus :P

 

possibly your brake pads are glazed. Do several controlled semi-hard stops from 30km-0 etc.

Otherwise here is an e-mail from an associate regarding this issue (only on a different vehicle):

> > Brake squeal is probably one to the most common and frustrating problems
> > that a car owner must face. Assuming the friction components are in
> > acceptable condition and operating properly, squeal noise doesn't affect
> > braking operation at all.
> >
> > Brake squeal (again, providing the pads and brake discs are in good working
> > condition and the noise is not being created by pad wear indicators or badly
> > worn pads/rotors) is simply the result of pad or brake disc vibration that
> > occurs when the pads meet the rotor surfaces.
> >
> > In order to dampen brake system vibration, you have several options to
> > consider: Chemical insulating compound on pad backs, shim insulators between
> > pad backs and the caliper, and high-temperature grease on caliper pins.
> >
> > Application of anti-squeal compound on the backside of the pad backing plate
> > can serve to prevent pad vibration, although some owners consider this
> > "damper in a tube" a temporary measure at best. If this compound is used,
> > it's critical to allow sufficient curing time before the brake system is
> > used. All too often, installers apply this compound, install the pads, and
> > immediately send the vehicle out of the shop. If the compound is not
> > thoroughly dry and cured, it will simply squeeze out from behind the backing
> > plate on the first brake initiation, rendering it useless. Apply a heavy
> > bead on the backing plate, and allow it to completely dry before pad
> > installation. This forms an elastic cushion that absorbs pad vibration.
> >
> > Check your Insulating shims (vastly preferable solutions to anti-squeal
> > compound) that are pre-install on the backside of the pads, between pad and
> > caliper. Shims provide a permanent vibration damper.
> >
> > One aspect that's often overlooked and one that can easily contribute to
> > brake noise, involves the caliper pins or sliding surfaces. If these
> > metal-to metal friction surfaces are dry, they can temporarily bind and
> > chatter during operation, resulting in a squealing noise. Clean and
> > lubricate the sides and pins with a high-temperature silicon grease.
> > Naturally, exercise care when applying the grease to prevent contamination
> > of the rotor and pads.

 

Urabus, I ony have 14k and originals still on so haven't experienced that yet.

It's so frustrating when you get told stories by the dealership that keep changing.

Come to think of it I had that sound for the most of instances periodically when I just stop stopping at like 1km/hour when mine was a few months old.

The dealership couldn't replicate it and the sound went away after a few months. It was very minor and could only be heard with my window open.

 

Hey C7 that's some good advice.

 

LOL... got to admit the thought crossed my mind as well.
hehehe...Imagine the avatar