Sound On Rear Brakes
- Thread starter Luboil
- Start date
milk15
Well-Known Member
Re: Sound On Rear Brakes
A certain amount of high-pitched brake noise is considered "normal" these days because of the harder semi-metallic brake pads that are used on cars now. Squeals heard the first few stops in the morning when the brakes are cold and somewhat damp from dew, and squeals that are heard the last few feet while coming to a stop are usually nothing to worry about.
Some brands of semi-metallic pads are inherently noisier than others because of the ingredients used in the manufacture of the friction material. Think of it this way, the longer life pads or pads that claim to have more stopping power usually contain more metallic material. Yes, they will last longer and could enhance braking but the chance of causing a squeal noise is very high. The squealing noise that might be caused from use of these pads does not affect braking performance and does not indicate a brake problem.
** My Alpina tuner tell me 1............. :nehnehhh:
A certain amount of high-pitched brake noise is considered "normal" these days because of the harder semi-metallic brake pads that are used on cars now. Squeals heard the first few stops in the morning when the brakes are cold and somewhat damp from dew, and squeals that are heard the last few feet while coming to a stop are usually nothing to worry about.
Some brands of semi-metallic pads are inherently noisier than others because of the ingredients used in the manufacture of the friction material. Think of it this way, the longer life pads or pads that claim to have more stopping power usually contain more metallic material. Yes, they will last longer and could enhance braking but the chance of causing a squeal noise is very high. The squealing noise that might be caused from use of these pads does not affect braking performance and does not indicate a brake problem.
** My Alpina tuner tell me 1............. :nehnehhh:
wt_know
Well-Known Member
Re: Sound On Rear Brakes
agreed. i'm using cool carbon brake pads. the squeks and squels is very audible. at one side, i have confident on the brake but on the other side each time when i heard the loud squeks i got freaked out and afraid the brake fail especially when i do last minute braking. a love-hate relationship. sigh
agreed. i'm using cool carbon brake pads. the squeks and squels is very audible. at one side, i have confident on the brake but on the other side each time when i heard the loud squeks i got freaked out and afraid the brake fail especially when i do last minute braking. a love-hate relationship. sigh
milk15;563874 said:
milk15
Well-Known Member
Re: Sound On Rear Brakes
Wait..... i just emailed DPE authorised dealer in S'pore.....
And they reply....... DPEs are customed make to fit your car model. So as long as you place you order on size, width, colour options, it will fit your car WITHOUT using spacers.
If you wanna use RFTs, DPE has to stick to the size/width of your stock wheels and merely change the offsets.
They nvr tell me whether change rims will have sound on the brakes ley........ :errrrrrr::errrrrrr::errrrrrr:
kenntona;563876 said:
Wait..... i just emailed DPE authorised dealer in S'pore.....
And they reply....... DPEs are customed make to fit your car model. So as long as you place you order on size, width, colour options, it will fit your car WITHOUT using spacers.
If you wanna use RFTs, DPE has to stick to the size/width of your stock wheels and merely change the offsets.
They nvr tell me whether change rims will have sound on the brakes ley........ :errrrrrr::errrrrrr::errrrrrr:
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Re: Sound On Rear Brakes
Else, I suggest you go to a workshop like Boss or BVO for a check.
Keep us informed. We wanna learn too.
If it is wheel related a speculated, go back to the place you installed the wheels and bang table. So many forumers changed wheels afterall, but not so many went through what you are going through....Luboil said:
Else, I suggest you go to a workshop like Boss or BVO for a check.
Keep us informed. We wanna learn too.
Re: Sound On Rear Brakes
I second the suggestion to return to the place that installed the aftermarket wheels and demand an explanation, makes no sense if they don't want to entertain after-sales and risk the non continued patronage of a customer.
Do let us know the outcome, I'm waiting to learn more about the effect of aftermarket wheels on brakes.
kenntona;564359 said:
I second the suggestion to return to the place that installed the aftermarket wheels and demand an explanation, makes no sense if they don't want to entertain after-sales and risk the non continued patronage of a customer.
Do let us know the outcome, I'm waiting to learn more about the effect of aftermarket wheels on brakes.
Luboil
Well-Known Member
Re: Sound On Rear Brakes
Like I said, bought 2nd hand from a forumner and he owns a mod shop. The wheels were exchanged at a normal tyre shop with wheel balancing done. I already went back to him but he said pretty normal unless I want to go back to stock rims again.
Braking no problem whatsoever, just tat initial cold start braking squeaking sound damn irritating and doesn't feel good.....:errr:
I may just drive into PML and see what they say since car still under warranty.....if still can't fix or have to wait too long then I'll go to BOSS. Thanks for all the suggestions.
kenntona;564359 said:
Like I said, bought 2nd hand from a forumner and he owns a mod shop. The wheels were exchanged at a normal tyre shop with wheel balancing done. I already went back to him but he said pretty normal unless I want to go back to stock rims again.
Braking no problem whatsoever, just tat initial cold start braking squeaking sound damn irritating and doesn't feel good.....:errr:
I may just drive into PML and see what they say since car still under warranty.....if still can't fix or have to wait too long then I'll go to BOSS. Thanks for all the suggestions.
Re: Sound On Rear Brakes
I have the same problem since i received the car. Is on aftermarket VMR V710 19" rims and stock brakes. Brake pads are new but not sure about rotor.
Seems after you drive the car some distance the sound disappeared. Some characteristics i gather are as follows:
1) as above, must leave the car for some time. First time moving the car in the morning guaranteed got sound.
2) After driving for some time, including braking or stopping, sound disappeared.
3) sound returned when i stop for car wash, around 15-20 mins is enough to recreate the sound. Disappear after driving a while again.
4) braking effect not affected, but sound is very audible. Think its also audible from the outside.
5) If park for say... 3-4 hours in normal car park, no sound.
Followed up and did some reading on this very forum and the conclusion was something about "bedding in" of the brakes. Apparently it was explained that the sound is produced by the rotor and the "cool" brake pad. At high temp, the pad will deposit itself on the rotor then no more noise. How true dont know but does explain the symptoms.
I have the same problem since i received the car. Is on aftermarket VMR V710 19" rims and stock brakes. Brake pads are new but not sure about rotor.
Seems after you drive the car some distance the sound disappeared. Some characteristics i gather are as follows:
1) as above, must leave the car for some time. First time moving the car in the morning guaranteed got sound.
2) After driving for some time, including braking or stopping, sound disappeared.
3) sound returned when i stop for car wash, around 15-20 mins is enough to recreate the sound. Disappear after driving a while again.
4) braking effect not affected, but sound is very audible. Think its also audible from the outside.
5) If park for say... 3-4 hours in normal car park, no sound.
Followed up and did some reading on this very forum and the conclusion was something about "bedding in" of the brakes. Apparently it was explained that the sound is produced by the rotor and the "cool" brake pad. At high temp, the pad will deposit itself on the rotor then no more noise. How true dont know but does explain the symptoms.
prodriverex
Well-Known Member
Re: Sound On Rear Brakes
Rubbish about changing rim causes this symptom.
I had the same squeal that sounds like mine rex on brembo slotted cross-drilled and mintex pads and also another track pad (can't rem the make, something DSC2500)..
The sound comes in not just on low speed going to slow down but also high speed going to slow down.
On my 2nd servicing last week, told PML. By the time I collect back, they have gotten rid of the sound. How? I dunno. I don't see my rotor being skimmed.
I figure the cause was from bad bed-in pads from the start. I thot brand new car just drove off and as normal. Now my rotor full of lines and shades.
I guess they just scrub the pad off any residue. My pad still long way to go, more than 1/2 actually. I'm only 22,000km.
Rubbish about changing rim causes this symptom.
I had the same squeal that sounds like mine rex on brembo slotted cross-drilled and mintex pads and also another track pad (can't rem the make, something DSC2500)..
The sound comes in not just on low speed going to slow down but also high speed going to slow down.
On my 2nd servicing last week, told PML. By the time I collect back, they have gotten rid of the sound. How? I dunno. I don't see my rotor being skimmed.
I figure the cause was from bad bed-in pads from the start. I thot brand new car just drove off and as normal. Now my rotor full of lines and shades.
I guess they just scrub the pad off any residue. My pad still long way to go, more than 1/2 actually. I'm only 22,000km.
Luboil
Well-Known Member
Re: Sound On Rear Brakes
Went down to BOSS to do servicing on all the brakes. The pads still have lotsa life, but they mentioned this problem is very very common among all the bimmers; and they also mentioned got nothing to do with the rims. Maybe jus co-incidental for my case.
Took off from their workshop after the svcing, no more squeals......but sadly, this morning when I cold move off from my lot, the sound is still there; tho much softer. Guess I have to live with it until my next full svcing at PML to see whther they can solve the probm
Went down to BOSS to do servicing on all the brakes. The pads still have lotsa life, but they mentioned this problem is very very common among all the bimmers; and they also mentioned got nothing to do with the rims. Maybe jus co-incidental for my case.
Took off from their workshop after the svcing, no more squeals......but sadly, this morning when I cold move off from my lot, the sound is still there; tho much softer. Guess I have to live with it until my next full svcing at PML to see whther they can solve the probm
Luboil
Well-Known Member
Re: Sound On Rear Brakes
Check with another workshop over the weekend.....they also told me 80-90% of the 5-series bimmers they service got this problem, despite the brake pads still having lots of life!
:errr:...sigh.....I hope PML can help me rectify this issue when I go in for servicing next month
Check with another workshop over the weekend.....they also told me 80-90% of the 5-series bimmers they service got this problem, despite the brake pads still having lots of life!
:errr:...sigh.....I hope PML can help me rectify this issue when I go in for servicing next month
prodriverex
Well-Known Member
Re: Sound On Rear Brakes
After 2 weeks from my servicing, problem 99.8% removed. 0.2% I can still feel it coming but by the time it gets to my ear, my car stop liao. So, as good as gone.
After 2 weeks from my servicing, problem 99.8% removed. 0.2% I can still feel it coming but by the time it gets to my ear, my car stop liao. So, as good as gone.
