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Suspension & Braking Forum by BimmerWorld
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Old 10-29-2012, 11:48 AM   #1
ImSoFreaknWhite
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Cross Drilled and Slotted??

So I had the stock rotors on my 2006 M3 vert and just bought a set of cross drilled and slotted rotors off a friend. They had been on his car since November of last year! ever since they have been installed they have been squealing whenever I break. Super loud!! The breaking is great compared to the OEM rotors its just the noise that makes it bad. Any ideas of how ot make it stop squeaking?

Thanks
P.S. the shop that put them on said that my pads still had about half life on them. idk if that matters, just thought id let you know incase it helps.
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Old 10-29-2012, 12:06 PM   #2
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what pads is on the car? If u just slap ur friends rotors on with ur stock pads and rotor was used. it will make noises...
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Old 10-29-2012, 12:15 PM   #3
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what pads is on the car? If u just slap ur friends rotors on with ur stock pads and rotor was used. it will make noises...
Im pretty sure they are the stock pads! So what pads should I get to eliminate the noise?
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Old 10-29-2012, 12:22 PM   #4
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Did you install new pads when you swapped rotors or just use your old ones? If the rotors were worn (the ones you put on) it may take longer for the pads to bed... Did you use anti squeal compound when you put the brake pads on?
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Old 10-29-2012, 12:32 PM   #5
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First you need to turn the rotors (or resurface them) after that you install new pads and fallow the proper brake in procedure in order to bed in the brakes as you should... old rotors with old pads... I am surprised the car even stops...
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Old 10-29-2012, 02:56 PM   #6
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Get blanks.
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Old 10-29-2012, 03:44 PM   #7
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Quote:
Originally Posted by Big Rick View Post
Did you install new pads when you swapped rotors or just use your old ones? If the rotors were worn (the ones you put on) it may take longer for the pads to bed... Did you use anti squeal compound when you put the brake pads on?
No i just kept the same pads I had! and yes the drilled ones were worn. And no anti squeal was used.

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First you need to turn the rotors (or resurface them) after that you install new pads and fallow the proper brake in procedure in order to bed in the brakes as you should... old rotors with old pads... I am surprised the car even stops...
How much would a resurface cost? and whats the proper break in procedure?

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Get blanks.
Whats that?
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Old 10-29-2012, 05:10 PM   #8
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Blanks have no holes, no slots.
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Old 10-29-2012, 05:13 PM   #9
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or just get ceramic pads. in all cases I've dealt with they don't make any noise
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Old 10-29-2012, 09:02 PM   #10
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Blanks have no holes, no slots.
I just had those, they look dumb
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Old 10-30-2012, 12:42 AM   #11
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I just had those, they look dumb
they look hella functional.
did you do the install? if so, do it right. if not, have someone give you a refund.
use antisqueal on the back of the pads. apply it generously. this should eliminate the noises.
after that, bed the brakes. google how to do this. this will match the pads to the rotor surface and make your brakes much more efficient.
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Old 10-30-2012, 12:46 AM   #12
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I just had those, they look dumb
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Old 10-30-2012, 09:02 AM   #13
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Quote:
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they look hella functional.
did you do the install? if so, do it right. if not, have someone give you a refund.
use antisqueal on the back of the pads. apply it generously. this should eliminate the noises.
after that, bed the brakes. google how to do this. this will match the pads to the rotor surface and make your brakes much more efficient.
The ones I had on originally were blank with no holes or slots! And ok would they sell anti squeal at like pep boys or something like that? And yes me and a friend did the install together.
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Old 10-30-2012, 02:17 PM   #14
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The ones I had on originally were blank with no holes or slots! And ok would they sell anti squeal at like pep boys or something like that? And yes me and a friend did the install together.
Idk call them. I bet they will though. It's commonly used.
You need to bed your brakes afterwards still
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Old 10-30-2012, 02:23 PM   #15
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Yes,the sell it at most all parts stores. You can get brake grease to grease the caliper slide pins and contact surfaces between the caliper and caliper mount. Also use antisqueal on the back sides of the pads. If you clean off all the parts well,then lube and antisqueal you will be all set. Bedding the brakes helps also especially if you have a pad like cool carbons or stop techs. Some race pads will almost always squeal,but it is not likely an issue for you.

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Old 10-30-2012, 03:09 PM   #16
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Quote:
Originally Posted by peytonracer4 View Post
Idk call them. I bet they will though. It's commonly used.
You need to bed your brakes afterwards still
Quote:
Originally Posted by HiHoBrian View Post
Yes,the sell it at most all parts stores. You can get brake grease to grease the caliper slide pins and contact surfaces between the caliper and caliper mount. Also use antisqueal on the back sides of the pads. If you clean off all the parts well,then lube and antisqueal you will be all set. Bedding the brakes helps also especially if you have a pad like cool carbons or stop techs. Some race pads will almost always squeal,but it is not likely an issue for you.

sent from my ATARI sc1224
Alright thanks for all the information and quick responses guys. Im going to call pep-boys and ask for anti squeal. This weekend take them apart put new pads and the anti squeal on them. Hopefully that will solve the problem.

Is it ok to just buy new OEM pads from the dealership?
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Old 10-31-2012, 04:18 PM   #17
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Hold the door Fellahs, over the years, I've run plenty of pads on cross drilled rotors and only one pad screeched a bit and they were Cool Carbons from way back in the day. They stopped great but they made a little noise. Pads I've used include Pagid RS-19 Yellow Endurance Pads, Hawk Blue (rough on rotors but they stop well), Porterfield R4-S and the straight R4 pad, which stops incredibly well, but they screech a little bit also. The braking on this R4 pads are amazing. Anyways, that's my two cents on this subject; sorry for rambling.
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Old 10-31-2012, 05:21 PM   #18
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Hold the door Fellahs, over the years, I've run plenty of pads on cross drilled rotors and only one pad screeched a bit and they were Cool Carbons from way back in the day. They stopped great but they made a little noise. Pads I've used include Pagid RS-19 Yellow Endurance Pads, Hawk Blue (rough on rotors but they stop well), Porterfield R4-S and the straight R4 pad, which stops incredibly well, but they screech a little bit also. The braking on this R4 pads are amazing. Anyways, that's my two cents on this subject; sorry for rambling.
Thanks for the info, but im just looking for a middle of the road pad that will eliminate the squealing!
whats the name? how much do they cost? and where can I find them?
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Old 10-31-2012, 05:57 PM   #19
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Ask, and ye shall receive: http://www.porterfield-brakes.com/

Ask for the R4-S compound. I autocross on this and do the occasional Fontuckey AAA Speedway "roval" track day too and find it good enough for my taste, but if you think you need more brake torque, the R4-E is more aggressive but boy oh boy does it produce the goods when you want. You know, Porterfield is in Costa Mesa, just a few hours drive from Sandy Eggo (San Diego). There's all kinds of good stuff up there, there's a English car repair place that always has real Mini Coopers for sale and customer cars on display, there was a Lotus/Lamborghini showroom there, and a bunch of interesting car shops. Heck, stop off at OC Ferrari by South Coast Plaza Mall or the Ferrari and McClaren Dealers off of PCH. Go to Maggiano, a killer Italian Restaurant - you must get the tender steak medallions with capers! Aww, so good! Anyways, sorry for rambling on...
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Old 10-31-2012, 07:40 PM   #20
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Is that a normal price for a set of brake pads? I thought they were going to be a lot cheaper.
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