Replaced my 360 Brake Pads BUT..

Hi,

Two days ago I replaced my 360 brake pads with new ones (OEM) and resurfaced the rotors/disks but they squeal like a pig lol! I did the "Bed-In" procedure for like 5 times (I know I should do more; crowded street) and now the car squeals louder than before? And that's the reason why I stopped doing the Bed-In thingy!

Thoughts? Thanks!

 

When you say OEM did you order them from a Ferrari dealer? did they come in a ferrari box? Or Brembo? Or did you purchase this from an online dealer claiming to be OEM? Want to make sure you are using the same compound. Also did the pad have a shim plate on the back of it? "known as a noise reduction shim"

It may be that you could have a warped rotor, on installation did you use brake quiet or Anti-Seize. These calipers get very dusty and a binding pad or pads can surely cause a squeal.

Other then that keep up the bedding process, it may take a few hundred miles to fully bed I know that's allot but it may need it.

Chris

 

The one I bought:

http://cgi.ebay.com/ebaymotors/_W0QQcmdZViewItemQQ_trksidZp3984Q2em1439Q2el2649QQitemZ140554836853QQsspagenameZSTRKQ3aMEWNXQ3aIT

I'll ask my mechanic about the shim plates. BTW, is there a difference between Brembo box and a Ferrari?

 

Did you use copper grease on the back of the brake pads , this usually stops the squealing

 

No I did not Generally, does new brake pads squeal?!

 

You Need the copper grease Definitely and that will stop the squealing like a pig

 

LOL! I'll try that.. Keep em' comin'

 

Thanks for the replies..
My brake squeal only occurs when I am comming to a slow stop.

 

Exactly and the copper grease will prevent this....had the same problem and it resolved it completely!

 

The ad is through Rutlands, the package looks to be an OEM Brembo box, so I would assume you have the right stuff. Unless Brembo made a change in the compound you should be ok.

The shim plates are usually fixed to the pad itself if there is no shim plate you will certainly have to use a lubricant like break quiet, or a small amount of Anti-Seize etc. Even with a shim plate a proper anti squeal product should be added to the back of the pads.

If all the above mentioned has been completed, it looks like you need some more bed time. Get out and drive it and have fun.

 

Thanks for the tips..
Believe me I want to drive it, but I am kinda embarrassed! I think I don't have a choice but to drive it then!! ;-)

 

The squeal can be from a bunch of different things most commonly it can be from the resurfaced rotor not "agreeing" with the material in the new pad. Depending on the contents of the new pad (semimetalic, ceramic, carbon,graphite, virgin graphite ect.) that is going to give you more noise or less noise. I am a firm believer that you should alway replace the rotor when you replace the pads.

Most of these f-cars have high ceramic content in the pads, although you may not have the ceramic package on your car the pad still contains ceramic. When you resurface a rotor the rotor is thinner when it goes back on the car then it was befor there for getting hotter faster during stop and go. When resurfacing and using a ceramic pad that will not dissipate the heat from the face of the rotor as much you will get noise.

Shims
These can play a role as well, there are 3 main different types of brake pad shim backing 1) Shims that are glued on. most brake manufactures use a glue that gets more adhesive the hotter the pad gets. These work well with semi-met pads as they take the heat away from the rotor face faster (then ceramic)and can make that glue on the backing plate more effective.
The second main type are shims that are "steaked" on these are more popular with carbon and ceramic pads that keep a lot of the heat at the face of the rotor and not toward the backing plate. With these you will get more black dust ( depending on what other ingredients are in the pad mixture) but you will have a better stoping pad.

The third main type are pads with no shims this is viewed as the "if it's not there it won't go wrong manufacture view" . Shims can come off and when there do it is not uncommon for
them to slice rotors.

All of these things matter, it's hard to see i the picture but it almost looks as if there is no shim on those pads, also did you change the brake hardware ? When doing a brake job you should alway change the hardware. If you reuse the old hardware that can be bent or damaged, this will create pad movement in the caliper = noise.

Hope this helps sorry for any spelling errors I wrote this fast from a iPad

 

Hi,
Thanks a lot for the info sir, much appreciated. I want to ask a question, I already know that new brake pads smells, when that occur; does it mean that the pads are "sitting" correctly? If so, mine doesn't smell at all! Just a loud squeal?
Please advice, thank you!

 

Read these:

http://www.zeckhausen.com/bedding_in_brakes.htm

http://www.stoptech.com/tech_info/tech_white_papers.shtml

Basically, the above posters' advice re putting some kind of hi-temp lubricant on the backs of the pads and where they touch the calipers is right. Squeal at light application is usually due to the high frequency vibrations set up by the pads vibrating against the calipers. It's usually easily/best eliminated with the lube and proper bedding. I use Permatex hi-temp brake lube. It's silicone-based and doesn't wash off easily, and enough is left behind even when you drive in the rain to do the job of preventing the vibrations from making noise. FWIW, I've never heard that heat by itself causes noise, but rather the vibrations from the pads contacting the calipers.

While you can replace the rotors every time you replace the pads, it's not really necessary unless they are worn below minimum thickness and/or badly scored. If you've only gone through one set of pads for the rotors, most of the time you will be fine replacing just the pads (just be sure you're not below minimum thickness). If you lube and bed as recommended, you should not have a squeal problem with most street pads. Race/track pads tend to be harder and often squeal no matter what you do. The OEM pads are a street/high performance compound made by Brembo and should be fine. I have StopTech street performance pads in my car and they also work well.

 

Thanks.. Here is an update:
I just put copper grease on the back of the pads, THERE IS A SQUEAL but a little bit less then used to. I'm losing hope here I even sanded the pads too; no luck!
Should I just drive the car till this nasty sound goes away? Or should I live with the idea that it's NOT going away!!!??!?!?
Thanks!

 

Here are a few things to take into consideration.

conditions that cause brake noise are:

Heat cracked or worn "un-true" rotors

Rough finish on resurfaced rotors

Loose fitting brake pads in the caliper

Lack of silicone compound on back of brake pad

Missing springs or anti-rattle clips that should be on the caliper or pad

Improper tightening sequence of lug nuts or caliper hardware.


Also how many miles have you driven since you started the bed in process?

 

Chris,
Thank you very much for your advices.
Yesterday I greased the front pads because they are the ones squealing, a bit less noise but still embarrassing though! I drove the car for like 450 or 600 miles when I did my brake job.
A question: Say I'll live with the squeal for now, any chance it might vanish at a later time? Or does it remain for good? Again thank you Chris!

P. S.: Sorry for any typo as I'm writting from my iPhone..

 

This is my problem

[ame]http://www.youtube.com/watch?v=pOso5yUyOaI[/ame]

Exact thing :cry3:

 

Where can I find the shims?
Thanks!

 

That is a terrible sound

 

AlphaBoy

Going over your original post, I have a few questions.

How many miles are on the current rotors? And was the car ever tracked!

Has the brake fluid ever been changed, and have you bleed the system for air in the lines.

Do you know how many times the rotors have been resurfaced? And was minimal thickness checked this time?

Did you or your mechanic change the pads? And how were the pistons collapsed?

Can you isolate the sound from right to left front to back?

And what do you feel when you press the break peddle, does it vibrate shimmy and shake etc.?

Also is the car harder to stop now then before?

If your car is doing what the Mercedes in the YouTube video is, it sounds like a stuck open piston a warped rotor or a stuck pad. Something is causing the pad or rotor to vibrate.

I know Ferrari had a recall on the pad hold down clips atop the caliper, I will have to look that up to see if it gives any info why.

 

I had a little chat today morning with a Lambo mechanic, he told me something about my problem. He said maybe that mechanic has swapped left ones with the right ones? All I can remember is that there's an arrow on the back of the pad which I saw; he said you have to install them at the opposite side of the arrows, he told me bring that sucker up at Saturday and I will kill that squeal for you! I have nothing to lose I guess!

BTW, Much appreciated!

 

Sounds like a pad chamfer issue on the leading edge side of the pad. Good to hear your getting help in solving this issue. Keep us posted on your end result!

Chris.

 

Chris,
Thank you for your tips, been great to me! And to the members of this forum also!
BTW Chris, what is a "pad chamfer issue" anyway?!
I'll update you ASAP..

 

Chris mentioned the recall on the clips. I have been wondering if you have the original clips and I take it to a dealer will they still replace them at Ferrari's expense if the car is 10 years old? I don't have any rattle or noise but it would be nice to get it corrected. I think I have a few things that weren't done over the years and just curious if they are still on the hook or it is now an out of pocket expense.