High Pitch sounds from slow speed braking

[dejanerio]

Re: High Pitch sounds from slow speed braking

just for clarification; bedding would help if your brakes squeal upon applying brakes, but in my case it squeals upon initial releasing of brakes.

 

[Lane]

Re: High Pitch sounds from slow speed braking

FYI, my post was replying to mrericlee who started this thread as quoted in my same post.

 

[Lane]

Re: High Pitch sounds from slow speed braking

just for clarification; bedding would help if your brakes squeal upon applying brakes, but in my case it squeals upon initial releasing of brakes.

dejanerio, perhaps you sh go to a 3rd party workshop and get a 2nd opinion. there are some good workshops in this forum. Jin says try R2D.

 

[wilman2772]

Re: High Pitch sounds from slow speed braking

Hi. I am no expert here, just sharing my own exp.

My screeching noise comes only when i light brake, usually means you are braking from a slow speed (eg. parking, or slowing down to a traffic light). My screeching is only from rears since they are not braking as hard as the front i suppose. Hard braking (usually from high speeds)almost never hear any screeching.

If your answer to above is yes. than follow Jin's brake bedding link. I did that and it was better but did not totally eradicate as my pads are not stock (higher performance types) but my rotors are. so they may not be perfectly compatible to begin with.

sometimes we think the screech noise only happen after you changed something, but it could be there all the while but we never noticed (maybe windows were down lately after your last change that you noticed and start getting more aware).

If above don't work than go another w/s to inspect for piece of mind.

PS: I did tried WD40 out of desperation earlier on (my low speed braking screech was so bad that everyone thought a taxi is coming their way and they were going to wave me down, so mah lu!), it did got rid of the screeches but only for a day (the braking power was still close to normal actually ). Dun do that and dun tell Jin i did it :shhhh:

If you use that on your rotors to get rid of the noise, then I tink you're crazy!!


'The Great White'

 

[zuoom]

Re: High Pitch sounds from slow speed braking

the squeal comes from vibration generated between the caliper, shim, pad, n rotor.

typically, it's either the rotors are not bedded in properly with the correct pads. resulting in "lines" on the rotors n pads that would vibrate when the brake caliper is depressed lightly.

or, it would be the shims that's doing all the noise. if so, do get the mechs to apply grease that's meant for the brake pad shims.

http://www2.zhome.com:81/ZCMnL/PICS/BrakePads/BrakePads.html

otherwise, it might be the material of the pad. if it's those metallic based ones, they usually have that high pitch sound when coming to a stop. ie: bus, taxi sound.

lastly, some guys experience less of the squeal by changing the rotors to a different (usually higher carbon steel material), while retaining the usage of metallic based pads.

good luck, good squeal. .P

 

[Slater]

Re: High Pitch sounds from slow speed braking

the squeal comes from vibration generated between the caliper, shim, pad, n rotor.

typically, it's either the rotors are not bedded in properly with the correct pads. resulting in "lines" on the rotors n pads that would vibrate when the brake caliper is depressed lightly.

or, it would be the shims that's doing all the noise. if so, do get the mechs to apply grease that's meant for the brake pad shims.

http://www2.zhome.com:81/ZCMnL/PICS/BrakePads/BrakePads.html

otherwise, it might be the material of the pad. if it's those metallic based ones, they usually have that high pitch sound when coming to a stop. ie: bus, taxi sound.

lastly, some guys experience less of the squeal by changing the rotors to a different (usually higher carbon steel material), while retaining the usage of metallic based pads.

good luck, good squeal. .P

thanks for advice.

but how is it that the sound was evident upon switiching to larger rims? kinda conincidental IMO

 

[zuoom]

Re: High Pitch sounds from slow speed braking

no idea on the rims incident.

afaik, there's nothing on the rims that will create noise.

that's a mystery.