My all new brakes have started squealing when they warm up.
#1
My all new brakes have started squealing when they warm up.
I don't have but a hundred miles or so on them and the machine marks have just barely worn off the rotors. Should I try to fix this now or should I give them more break-in time and see how they're doing in a week. I put anti-squeal back pads on them but didn't do anything else. If I should fix them now, what can I do to eliminate this beyond what I've done? I've chamfered pads in the past but I'm not too hip on that since you lose surface area on the rotor doing that.
#2
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I've chamfered pads in the past but I'm not too hip on that since you lose surface area on the rotor doing that.
What pads are you running? Are they new rotors? What's the condition of the calipers, ie, original or something else?
#5
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Glad i'm not the only one having a problem with new brakes squealing. I have just the the entire system renewed (original calipers), but new pads, new discs, new pipes etc. The rears are squealing like a pig, very annoying and very embarassing. I've spoken to the shop and they have said that this is a common fault on the rear brakes of early 964's and ther's not really anything that can be done, except an expensive upgrade to a newer rear disc system? any advice?
#7
Rennlist Member
Just read the article posted by JasonAndreas, the usual advice given to bed brakes in for street use is to use them gently for the first few hundred miles. However, after reading the link above, it's quite clear that there is a much better process... I think i'll be spraying some brake cleaner on the discs and starting with the bedding in process again...
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#8
Originally Posted by JasonAndreas
StopTech has a new article online, Pad and Rotor Bed-In Theory, Definitions and Procedures that maybe worth trying.
#9
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Originally Posted by KB964Cabrio
...having a problem with new brakes squealing. I have just the the entire system renewed ... I've spoken to the shop and they have said that this is a common fault on the rear brakes of early 964's and ther's not really anything that can be done, except an expensive upgrade to a newer rear disc system? any advice?
#10
In my case, the shop was ME. Of course, I have not gone through the bed-in procedure specified by StopTech. I will do that later this week. I did thoroughly clean my calipers and I did install new damping material between the pistons & the pads.
#11
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I had the same problem. No amount of cleaning or rebedding would do anything to help the squeal.
When the cars brakes got hot my porsche sounded like a bus stopping.
I replaced the stock pads with ceramic pads which squeal above the range of human hearing and leave far less brake dust on the rims. Worked like a charm. They arent too expensive. (And the ones I threw in the garbage were almost new like yours so don't feel bad about it.)
Kirk
When the cars brakes got hot my porsche sounded like a bus stopping.
I replaced the stock pads with ceramic pads which squeal above the range of human hearing and leave far less brake dust on the rims. Worked like a charm. They arent too expensive. (And the ones I threw in the garbage were almost new like yours so don't feel bad about it.)
Kirk
#12
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I had terrible, terrible sqealing. I changed to Ferodo pads which fixed the problem at first but then they started squealing again after a week or so (although not as bad). I removed the anti squeal stuff (it had gone all squishy and 'pulpy' and gave the caliper a vigorous cleaning, then reseated the pads. Only very minor and infrequent squeal since. In fact its only audible at all from inside the car when the window is down.
#13
Originally Posted by Kahdmus
I had terrible, terrible sqealing. I changed to Ferodo pads which fixed the problem at first but then they started squealing again after a week or so (although not as bad). I removed the anti squeal stuff (it had gone all squishy and 'pulpy' and gave the caliper a vigorous cleaning, then reseated the pads. Only very minor and infrequent squeal since. In fact its only audible at all from inside the car when the window is down.
#15
I had a squeal with OEM pads while applying the brakes at slow speeds. Cleaned up the Porsche buttons and replaced the half worn out OEM pads with Metal Masters. After bedding them in as described in Adrians book (i.e a few aggressive stops from about 80km/h) - no more squeals and a lot less brake dust. I'm not sure if one can bed in pads after they've been braking for 100 miles and I think new rotors may need to have the surface ruffed up to remove the concentric circles put in during the machining process which could be contributing to the squeal.
Hope this helps
Bill
90C2
Hope this helps
Bill
90C2