D7reU

Hi, I purchased a 2009 C63 with PP. The brakes are all OEM. However, I realized this week that my brakes squeak.

Are the 2 piece rotors supposed to do this?

Thanks.

Mort

This is a common problem with MB brakes. Some relief can be found by thoroughly cleaning all the brake dust off the pads and calipers. Also some have found temporary relief by bedding in the pads by doing a high speed brake application in a safe area of the highway.

ddcha

yeah, if you do a search you'll find that it's a common thing. Use different brake pads when the time comes.

Autosport7

I get so annoyed with this myself. I always switch to Hawk or EBC pads on my cars, but not sure what to run on the C63 as I don't want premature wear on the disc...

AMG893

THERE IS NO SUCH THING AS SAFE SPEEDING!!!

Diabolis

Uhhh... let's not get carried away here, but you are certainly right as far as the constabulary is concerned.

papashango

So my car never did this at first and now I've started to notice the squeak especially when I am coming to a slow speed spot. Now I know some of you guys say that it's normal, but isn't this also a sign that the brake pads should be replaced?

How do I know it's not the brake pads running out and just a 'normal' squeak instead?

Thanks.

whoover

Your pads have wear sensors. If they're low you'll get a flickering dash light. If the light is on solid, you're way low.

The official procedure to quiet squeaky brakes is braking hard, from 100 to zero, five times in a row. It usually quiets the brakes for weeks. Where you do this safely is an exercise left to the reader. Maybe rent a runway for a few minutes?

m a x i m u s

you can also just take a look at the pads. if they are substantially thinner than the backing plate, it's time to replace those mothers.

chris135b

Bingo. Doing some hard braking from "allegedly" high speeds will resolve the issue. Just "tooling" around town with light braking pressure, my rears get really, really loud! But after a few good beatings on the brakes, everything goes away.


From what I have read and seen, the compound of the MB pads/rotors, causes the problem.


-C

edwardsflight33

or tell people you went 100 kph....

zibby43

This is not just a MB AMG brakes problem.

Any big brake kits are susceptible to squealing.

Bedding in your brakes properly upon delivery can help to reduce the risk of this happening.

tomsil

Yes stay away form those non MBW brake kits

D7reU

Really? I was thinking about getting these when the fronts are destroyed lol.

http://www.racingbrake.com/Two-piece...ONT-p/2141.htm

Mort

Don't pay any attention to that poster. He is SPAM!

Racing Brake looks like a good alternative to OEM at time of replacement.

ChrisD63

I am also having this incredibly annoying issue. Just replaced my front pads with the Stoptech alternative and replaced the rears with OEM pads as Stoptech doesnt carry the rear pads for our cars and the squeaking is still there.

Diabolis

High performance brakes - especially with metallic pad compounds - are prone to squealing. Some squeal more than others, and sometimes the squealing can be exacerbated by glazed pads/rotors or dirt build-up. It also gets worse as the pad wears down.

There are anti-squeal shims and anti-squeal compounds that you can (and should) apply to the back of the pads whenever you change them, but again, it is not guaranteed to completely eliminate the noise. Also, as the pad material gets thinner the brakes do squeal more.

If the cause of the squealing is glazing, doing a couple of hard (panic) stops from illegal speeds followed by some coasting (similar to what you'd do to bed in new pads) will likely cure the problem. If the cause is dirt build-up, a power washer nozzle aimed at your rotors and calipers may help if not completely eliminate the issue. If they are squealing because they're worn out or because you didn't put any shims and/or anti-squeal compound on the back of the pads, the fix is to replace the pads and/or use the shims / compound.

If none of these cures the squealing, chances are it's the pads you've got and there's nothing you can do about it short of changing them with a different pad formulation.

zibby43

+1

Also, if you really want to ensure a thorough bedding-in process, try to park the car somewhere immediately after you've done the repeated stops. If you're driving highway speeds consistently following the stops, the brakes cool off too quickly.

Diabolis

Actually, that's the one thing you shouldn't do. Parking the car with hot brakes will result in the portion of the rotor that is under the (now heat-soaked) brake pads not cooling properly and is usually the # 1 cause of warped rotors. You do not want to park a car with hot brakes.

RacingBrake

This thread discussing how RacingBrake developed the OE replacement brake pads for SL550:

Any Brake Pad options

Latest testimonial:RacingBrake makes me happy

Find your brake pads here:http://www.racingbrake.com/category-s/7144.htm

ET500 is our most popular "performance street" compounds (semi-metallic) that was carefully formulated to provide the following characteristics yet still under that squeaking threshold:

• Good initial bite
• Consistent brake torque
• Excellent modulation
• Good durability
• Friendly to rotors
• Very low dust

Say Yes to RacingBrake pads with guarantee result:

Yes - You can have good braking power
Yes - You can have no squeaking
Yes - You can have low dust

snowmuch

Any recommendations for aftermarket pads? Thanks

zibby43

I should have been more clear. If we were talking about parking a car immediately after the brakes had just been abused at the track, I would definitely agree.

Before parking I would cruise at least 1/2 mile or so at a moderate speed.

aussie e55

what do you do at the drags hard brakeing short drive to line up for next run wait in line 15 or 20 min. ?

Diabolis

At the track, that is exactly why there is a cool-down lap before you pull back into the pits. You need to cool down you brakes before you park the car. It is a full lap (several miles or kilometers) at "legal" highway speeds.

At the drag strip you have to stop only once (and not that hard to boot), which is usually followed by a leisurely drive back to the queue... not exactly taxing on the brakes by any means.

RacingBrake

The latest testimonial from an SL550 with the same squeaking problem and after replacing RacingBrake's ET500 brake pad.

https://mbworld.org/forums/sl-class-...squealing.html

Look no further on other aftermarket brands, no more trips to dealers for the squeaking issue, no more "hard braking" or "re-bedding" etc. that you were advised.

RB's ET500 is the optimal brake pad for performance driving w/o squeaking and very low on dust.

Come to RB for your complete brake solutions/upgrade and end your headaches.

Brake Pad: http://www.racingbrake.com/category-s/7144.htm
Brake Rotor: http://www.racingbrake.com/category-s/7136.htm