Brake squeal fixes for new rotors, calipers, pads?
 

Anyone have any suggestions for brake noise? I just installed two new front rotors - ATE vented. It was all I could get local on the day I had time for the repair. I put on new brake hoses and factory rebuilt calipers. I put on new ATE pads.

I had been running those Austrailian dustless pads and did not have brake noise. These are very noisy now when I stop. I think these have more metal in the pad. Any suggestions?

Did you use the silicone based brake squeal prevention stuff on the rear side of the pads ? Worked OK for me. Just new pads not rotors etc. They may calm down after a bit of use in your case.

i have heard various things
 

such as chamfering the edges of the pad.

i have never done any of it. i just change the braking pressure with my foot when they squeal. that often helps a little. but i have changed out perfectly good (from a wear standpoint) pads several times when they were chronically noisy. for a long time i went with factory only pads.

on my sdl, now, i have some ceramics that i got from tire rack. i like them but they had no provisions for wear sensors on them. when tire rack sent me my email satisfaction survey i told them about the lack of wear sensors and never had any response. this is the first time i have ever had a disappointing experience with tire rack.

tom w

Go to local parts house...
 

And get yourself some brake pad anti-squeal coating for backside of pads - MB dealers should carry similar product as well - I use CRC Disc Brake Quiet, no noises since application.

BNC

I have heard before too that MB brakes squeal because they don't chamfer their pads. I don't know how true that is however, just something someone in a tire shop told me.

I do know the anti-squeal paste works. But that's not all you should do.
Even dustless pads create debris. They wear down don't they?

You should always use brake cleaner on the calipers.

Danny

I chamfer my pads with a rasp (use a dust mask) and apply a little brake pad "anti squeal" compound to the back.

I put textar pads on mine....no antiqueal compond on rew rotors and never got the smallest squeak out of them...some pads squeal more than others.

never heard a sound
 

I replaced rotor and pads with OEM, used a little paste and have never heard a thing from the brakes. Sounds like the rotors are the common denominators rather than the pads.

Sometimes these cars just make noise, the rears are the worst.

I bought those little packets of MB anti squeal paste and put them on the back of the pads, it seemed to work.

no, sorry
 

i disagree. it is the pads, imho.

tom w

I have heard of a practice of running the car to a certain speed and hitting the brakes as hard as you can and baking them. I know the MB shop I go to has an "oven" to bake the brakes and some compound to add to them before baking. Gilly has told me that the way he does it is to get it to speed and hit the brakes a few times to bake them and it has worked for him.

Same here....I redid my rear brakes due to warped rotors about 5 months ago, I used Balo rotors and the Pagid "Organic Deluxe" Pads, and they squealed in forward and reverse slowdowns. So I went to an empty part of the freeway, did about 85, then gave it a good hard slowdown to about 45mph, and the squeal went away. They still do an "eeee" when I slow down from backing up, but only in reverse....never anything in forward driving anymore....doesn't bother me....generally my driving is forwards anyways. :D

Bedding in the brakes
 

"Bedding the pads" is the commonly referred term for applying brakes at speed to get pads settled in -

I use Brembo rotors or OE, combined with OE pads & pad goop; no noises. When I have cheaped out in the past & used less than OE quality pads/rotors, I've had noises .

bnc

in some cases its the pads rubbing on the pistons and mounting pins. most cases its the pad and rotor contact making the noise.it all depends on how much metal is in the pads and how perfect the rotors are. i have mine turned when new before i install them.(you would be surprised how often you get a new rotor that is imprerfect) DO NOT HAVE CHECKER,AUTOZONE OR ANY PLACE OTHER THAN A MACHINE SHOP TURN THEM. most of these places are careless. there is a spray made by i think crc that you can also spray on rotors that is supposed to help with squeak, but i have never used it so i dont know if it works or not.

Not familiar
 

Not familiar with anything that would be sprayed on the rotor - I know of tacky spray coating that are sprayed onto backside of pads -

Anyway, at the dealership in the '80's (yep, back then), we had a brake rotor lathe that wasn't a lathe - it had a small abrasive wheel, instead of a single edge cutting tool, that ground each rotor face while the rotor turned in the lathe. This left a non-directional machined face on rotors, instead of a record groove finish, & worked very well to prevent squealing/brake noise.

Of course, back then (& probably still today) MB recommended rotor replacement instead of turning. This just makes sense, as cutdown rotors are less efficient at heat dispersal & easier to warp.

bnc