Brake Pad Rattle Squeal

[Tammaru]

Hello,

I'm having a problem with a rattle and squeal with my new front brake pads (97 Disco). I put on a set on Mintex front pads (new rotors also)and noticed a rattle most of time. So I decided to try Ferodo pads.... rattle gone but replaced by a squeal. I have driven well over 1000 miles with the new rotors so any coating would've been well worn off already and I have bedded the pads each time I have changed them. I just put a set of Wagner ThermoQuiet pads on another car and they were great, quiet and stopped great so I thought I'd try them on the Disco. Now I have the rattle and the squeal. I have tried the crc brake goo on the back of the pad, I've tried brake grease, nothing seems to help. I realize that the rattle is the pad either hitting the caliper or the rotor, anyone have any idea how to get this to stop? Are there any shims that can help this? If so, where would I be able to get them? Thanks!

T

 

[brianhoberg]

If they are squealing, apply the lube to the pins and anything not touching the rotor.
Make sure your brakes are bled fully.
Make sure your rotors aren't warped.
Drive it like you stole it.
If the brake dust is causing problems, replace with basic ceramic brakes instead of high dollar ones. I've always had better luck with the plain ceramics.

 

[Tammaru]

Pins are lubed, brakes are bled, rotors are not warped.....
can dust cause a squeal? I'm thinking the squeal is from the metal edge of the pad rubbing against the caliper. I've lubed that also, but the squeal is still there.

 

[realdeal]

My pads were squealing on my Disco after changing pads. Believe it or not, a coat of WD-40 on the rotor and then working it into the pad driving around a BIG EMPTY parking lot apparently moved the resonance frequency to where it's not audible. The WD-40 wears off to where stopping distance is normal after braking about 10 times from about 25mph. If you are going to try it, I'd recommend doing rears only and then fronts only. Once again, only try this in a large empty space where you have 2x normal stopping distance.

My brakes were unbearable, and now they don't make any noise at all. Note that this is lazy, cheap, and redneck, so proceed at your own risk.

 

[Discoinjapan]

My pads were squealing on my Disco after changing pads. Believe it or not, a coat of WD-40 on the rotor and then working it into the pad driving around a BIG EMPTY parking lot apparently moved the resonance frequency to where it's not audible. The WD-40 wears off to where stopping distance is normal after braking about 10 times from about 25mph. If you are going to try it, I'd recommend doing rears only and then fronts only. Once again, only try this in a large empty space where you have 2x normal stopping distance.

My brakes were unbearable, and now they don't make any noise at all. Note that this is lazy, cheap, and redneck, so proceed at your own risk.

" Note that this is lazy, cheap, and redneck, so proceed at your own risk."

Just wanted to quote that!!

 

[Discoinjapan]

just go ceramic! "before" bathing your rotors with WD40

 

[realdeal]

Note that this is lazy, cheap, and redneck, so proceed at your own risk.

And I'll quote it, too!

 

[Tammaru]

I think I'm going to skip the wd-40 on the rotors for now. The thought of my car possible having even less stopping power is scary. Anyone have any idea where to get a few aftermarket shims?

 

[brianhoberg]

O'Reilly's, AutoZone, Western Auto, Napa...any of the parts shops should have them or can direct you in town where to get them.

 

[Tammaru]

I stopped by auto zone, advance auto and pep boys.... none of them had them or knew where to get them, they only had brake pads with shims already installed. I'll try Napa tomorrow. Thanks!

 

[Slappy]

You need to apply anti-squeal to the back of the pads before you install them. It comes in an aerosol can and will solve your problems, it can be had at any auto store. I also usually bevel all the edges of each pad.

 

[Tammaru]

yes, i have tried spray on anti-squeal also, still squeals.

 

[Tammaru]

Ok.... found shims at oreillys auto online.... put shims on the backs of all the pads (front and rear) and also coated any metal surface (not the rotors of course) with raybestos silicone brake lubricant and so far so good.... there might be a slight squeal when I hit the brakes really hard but nothing bad..... also I noticed with the shims it takes a lot less pressure on the brake pedal to stop the car. Problem solved. Thanks to everyone!

T

 

[gmookher]

My pads were squealing on my Disco after changing pads. Believe it or not, a coat of WD-40 on the rotor and then working it into the pad driving around a BIG EMPTY parking lot apparently moved the resonance frequency to where it's not audible. The WD-40 wears off to where stopping distance is normal after braking about 10 times from about 25mph. If you are going to try it, I'd recommend doing rears only and then fronts only. Once again, only try this in a large empty space where you have 2x normal stopping distance.

My brakes were unbearable, and now they don't make any noise at all. Note that this is lazy, cheap, and redneck, so proceed at your own risk.

this is retarded..

 

[realdeal]

this is retarded..

And regardless of the lack of effort, retarded had better results than going on an odyssey of 3 different sets of pads, glue, and shims.

:rofl:

 

[MarkP]

BAP GEON has pads from basic to ceramic.

Prices are pretty good.

 

[Tammaru]

And regardless of the lack of effort, retarded had better results than going on an odyssey of 3 different sets of pads, glue, and shims.

:rofl:

I don't have any issues anymore, no noise and my brakes stop the car better and in less time, plus I know how to do it so it doesn't squeal next time.... and I have brake pads for the next two times I do the brakes.