Brake pad noise

Hi there,
Im running PBR mettalics on my front 740GL.
Now i've been told the squeaky sound caused by the mettalic pads which did
not occur with the 'semi mettalic' oem that i used before. So the question
is, how can i distinguish between the 'normal' squeak caused by my mettalic
pads, as opposed to the squeak caused by a worn out pad as a sign for
replacement?

Frank
Vancouver, BC

 

In my limited experience, worn out pads, ie. metal to metal, is more of a
grinding shriek, rather than a squeak. A visual check is the best diagnosis
though.

Stuart.

 

From a point at sea, to the circles of your mind, this is Frank:

If you don't mind me saying, that's a dumb question. Brakes are THE
most important thing on your car. They should be serviced and checked
regularly without exception.

Make a proper, regular service schedule, and even if you skip on
everything else, make sure the brakes get checked. This way you will
never need to find out what the sound of a worn out pad is.


--

Stewart Hargrave

Faster than public transport


For email, replace 'SpamOnlyToHere' with my name

 

As Mr. Hargrave says - You don't want to hear the sound of a worn out pad
more than once. Believe me. If you do, it's definately not a "squeak" See
Above.

Stuart.

 

From a point at sea, to the circles of your mind, this is Frank:

Agreed, but if you ever hear this sound (a metal on metal grinding
noise when you apply the brakes) it is already too late.

No, I don't buy it. If your pads wear out between services then the
servicing was not done properly. The suggestion that a car which has
been maintained with a proper service interval could still have worn
out brake pads makes an absurdity of the schedual.

Pads should be replaced before they get anywhere near the metal
backing. As per your original post, this sound is not a 'warning' that
the pads need replacing, it is a warning that you need to change your
service technician.

If the servicing is carried out properly it simply isn't an issue.



--

Stewart Hargrave

Faster than public transport


For email, replace 'SpamOnlyToHere' with my name

 

You seem to assume that problems won't occur between services. I agree that
regular service will reduce car problems , but it does not eliminate it
completely. Someone should not assume that their car is running problem free
just because they serviced it last week or last month. Drivers should know
if there is a problem. Most of the questions on this NG asks "why is this
happening, or "what is this noise", or "how can I fix.... "

People are just trying to learn more so they can understand their car
better, and not get ripped by their technicians. Not everyone has a
trustworthy technician (yet) unfortunately. If you had to take your car in
for every little strange noise you hear, you may get taken for a ride by the
autoshop.... "You need a new Johnson rod" (George Costanza)

To the original poster: Metal pads usually squeak.. high pitched... If you
have no pad left.. it will be grinding.... like grrrrrr.. really rough
sound. So the sounds are entirely different.
You know it's a problem when other drivers are giving you funny looks

 

My 850's pads have always squealed like pigs at low speed / light
pressure. I just got used to it.

To reply, please remove one letter from each side of "@"
Spammers are vermin. Please kill them.

 

on my 240 when the brakes STOPPED squeeling was when I need to replace them.
I got new brakes and they now squeel. Do note, non oem parts. Probably rinky
dinky. Installed by a non Volvo mechanic. Any way to make it stop? I've
heard it's the shimms between the caliper? and the pad?