Buzzing brakes?

[kevinzorz]

It has been a few months since I have installed my R1 concepts drilled/slotted rotors; the stopping power is good, the price was great, and the weird smell is gone, which only leaves one pestering problem: the buzzing noise.
Is it normal for these types of rotors to produce a buzzing noise as you drive along? the noise starts to come when the brakes get hot, and it stays (even when I am not pressing the brakes), however when I do press the brakes the sound is amplified.

[Logic]

from what you are saying the noise wasn't there before ? i would check your install ..do both of them buzz? check for something rubbing , you may also wanna check your pistons to see if there retracting and not sticking too.. i have seen to where rotors get warped and cause the pads to make a buzz sound...were the rotors new? if you give a little more info maybe we can answer your questions you may also wanna call a local brakes place for any answers since they deal with that all the time.

[Cru328prod]

lmao you mean if the brakes where new?...........i got them in the back and i have that sound 2 but i think its coming from the front, i just ordered a new sets rotors and brake pads (with the sensor slots). I was told you have to break them in, so they don't glaze or whatever, i have no idea.

[OCKlasse]

My drilled rotors do that as well...I wonder if it's the air passing through them?

[Espresso]

If you got the ceramic pads, they are more then likely making slight contact with the rotor.
It SHOULD NOT be making any noise if you are not applying the brakes...this goes for ANY brakes, standard, street or race.
Something IS wrong.

[kevinzorz]

the sound seems to be coming from both sides. For those of you who are experiencing this, do your brakes buzz as you drive along, or only when you are pressing the brakes?

[Cru328prod]

mines make the eeeeeeeeesh eeeeeeeeeesh eeeeeeeeeesh with like 1/4 of a sec intervals. Faster i go faster the intervals, slower i go slower the intervals. But it still the front rotors and brakes

[Espresso]

^^^

Rotors are warped. If they are cross drilled. Cracking is shortly to follow.

You ALWAYS have to break in in new brakes.

[Cru328prod]

well i've already came to that conclusion, and went and bought some drilled and slotted rotors (big mistake after all the research i did)

Drilled rotors aren't good at all, and from what i've read they don't cool as much as you think, they crack, and they aren't made to be agressive on. Yes they are good for releasing the gases due to high friction but thats about it. One thing i will tell you is the prices from R1 are to good to even care lmao. Plus they look cool.

[Logic]

well i can tell you i had my front brakes and rotors done, i didnt do it but was installed @ mercedes ....i took my rotors in that i bought from autoparts warehouse (zimmerman) and they are cross drilled but dont let the name fool you they are not actually drilled but i dont have any buzzing sound...cru as far as yours buzzing like you said it sound like yours are warped....if crossed drill aren't that good why does AMG , corvettes and high end cars have them???? for looks???

[kevinzorz]

how are you suppose to break-in brakes?

[Espresso]

Originally posted by kevinzorz
how are you suppose to break-in brakes?

You have to properly seat the pads to the rotors & let them "get their groove" so to speak. Plus most come with a protective coating that prevents rust.
EDIT: Ofcourse the company you purchase the brake parts from, should be able to tell you their break-in procedure.

Most high end cars come with them because of the sustained high end speed they can produce. They are also NOT EBAY SPECIALS. Low iron content garbage or non-ceramic s**t.

Most of the high end cars use ceramic composit rotors & pads.

There are HUGE differences in rotors. I've replaced rotors on cars that were in excess of $10000.

But, in the end ALL cross drilled rotors WILL crack.

[stox]

Zeckhausen has a nice write up on breaking in your brakes:

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

A proper break-in will make a world of difference in the performance and lifetime of your brakes.

[Logic]

so crossed drill rotors are a one time pad use ...if the brakes get done again i will have to have them replaced?

[Espresso]

For the most part...Yes. Most places do not have a clue on how to turn cross drilled/slotted rotors. So they will not touch them. They are not much different then regular rotors, Just slower & not as deep a cut.
If you can find someone that does it then they will tell you if your rotors are reusable.

[Cru328prod]

hey espresso, can you go from semi metalics to ceramics later on without have to replace the rotors, or have them cut?

[Espresso]

You should always have rotors cut when adding new pads(I always get new rotors when doing brakes). This ensures a smooth flat surface for the pads to sit against. Also make 100% sure that all traces of the semi-metallic pad material removed from the rotor(also clean the dust shield, caliper, ect...)
The particals from the old pads can contaminate the ceramic pads & could greatly affect their stopping power.

[Cru328prod]

lmfao we sure did hijack the sh*t out of this thread. Who makes ceramic brakes for our cars?

[Espresso]

What type of driving?
There are a few companies out there that make the pads...rotors are a different story.
A proper set of good ceramic pads with OEM Brembo rotors, cant be beat

Akebono, Axxis, Hawk & EBC are a few names that come to mind for pads for the W202.

[Cru328prod]

I do a lot of street racing, which is soooooooo bad for drilled rotors. right now im broke like a joke and if i don't get a trans am then i'll redo the brakes to brembo and ceramics. I didn't know anyone made ceramics for our cars i thought they were all semi metalics

[Espresso]

What is bad for the cross drilled rotors, is this (for any rotors for that matter)...

during times of Heavy repeated braking it is IMPERATIVE to let the brakes cool down. DO NOT & I repeat DO NOT hot the brakes to keep the vehicle stopped.

Meaning, if you are on big long twisty roads...or in you case CRU328prod...Like in Port Charlotte
the empty residential streets that are not built up yet. Or on a race track. To PROPERLY let the brakes cool down IF you need to come to a stop. You STOP, then either put it in PARK, or out of gear with the E-Brake on. DO NOT keep the car still with the brakes.


For a excellent street pad for your car. Check out the Axxis ULT pads.

Also, I HIGHLY recommend this company. They have excellent quality brakes & awsome prices.
http://www.irotors.com/storefrontprofiles/deluxeSFshop.aspx?C%20Class&sfid=149795&c=141190

[Cru328prod]

lmao now i know u use to live in sw florida!!! how did u end up in panama. nah i've learned, i just drop the car in N if im at a stop light or sign, but i don't really goof of alike that on dead roads, only like on i75 or like us41. I just recently changed the brakes and rear tires on my car, i don't know whats the jepordy wheel sound coming from my car when i break.......its like tick tick tick tick really fast. I have R1 con. Drilled and Slotted rotors F&R, with 225/35/18s in the front and 225/40/18s in the back. and on top of it my ASR light is on! maybe its a loose sensor, or i have to drop the dash and pull that thing behind the brake.

[Logic]

from what i understand it the rotors are at minamum thickness and if you replace the pads you have to have the rotors replaced

[Espresso]

Originally posted by Logic
from what i understand it the rotors are at minamum thickness and if you replace the pads you have to have the rotors replaced

Yes, ofcourse. The one who would machine the rotors would know the measurements( the limits are stamped on them). But rotors, if the brake system is used properly, can last for YEARS.



Cru328prod, I ended up here, because my wife has family here & the medical care is outstanding. The VA clinic there in Ft Myers on Winkler 'nor the Bay Pines Hospital was not giving me no where near the care that I required for my injuries. So we decided to move here.

As for the rapid tick you hear, did it happen right after the brakes were replaced? Also does it get louder as you make turns? It could be the brake dust shield got bent during the brake change, or one of the sensors as you brought up.
As for the light. Is it the /_\ or the BAS/ASR warning light?

[Logic]

well what i meant to say is the rotors are at min brand new....i read it some where which from what i read is a weight thing...

[Cru328prod]

man wtf happened to you, and yes the medical care in ft.myers is fu*king horrible. I broke my wrist into 4 pieces, the ER doctor said it was just a fracture. It took a week just to get into surgery. Kagen said we have to get you intro surgery right now you have internal bleeding, they put 3 pins in my wrist.