Why are my car brakes squealing and why does it stop after about 20 mins? it's driving me mad!?
Answers:
There are several answers which could be the cause of brake squeal but my 40 years as a motor vehicle technician lead to me to think that the answer pointing to a stuck calliper is the most likely. The reason that the squeal occurs after having been parked is that the last foot brake application will have forced the callipers hard on to the brake pads to apply the brakes and the stuck one will not release afterwards and keep the pad pressed hard on the disc. As the wheel starts to rotate when you use the car again the disc will force the pad away very gradually because of slight side movement due to slight disc run out and/or very slight wheel bearing movement. The squeal may reoccur after you have used your brakes again and are travelling slowly. As the discs and pad warm up the friction coefficients change and the squeal reduces or stops until they cool down again. This relatively light pressure which continues when squealing for longer than normal brake applications eventually causes glazing on the braking surfaces. To rectify this problem the offending calliper must be removed and cleaned or replaced and the braking surfaces deglazed. Hope this helps even if it is a bit wordy.
Take the handbrake off!
Brake dust, have a shop put the car up, blow out the dust, and spray "Anti-chatter" Brake spray on the pads, it stops after 20 minutes after the brakes heat up.
Coz they need seeing to - dont take chances where your brakes are concerned - it may not be only you that gets hurt or worse !!
Its the time of year, your disc's are wet and as you drive they warm up with the more breaking you do.
If you've got new brake pads, don't worry, they'll stop doing it once they've worn in. If not, you probably need new ones.
I have had that happen Kwick Fit said it was dust on the pads and they took the pads out a sprayed them with some cleaner stuff that stopped it for a while then it came back for about a week and then it has stopped and has not come back
Brake dust. 2nd poster above has it right. It will stop after applying anti-chatter.
Get your brakes checked. It could be the wears clip,or squeal clip telling you that they are getting past the minimum thickness required to be safe. Or it could be that you have glazed rotors.They look black and need to be resurfaced to stop the squealing. Take it to get check.Better safe than sorry
u have a caliper thats sticking
Brake Dust
brake pads - sounds like they're worn through
It could be just brake dust which was the case with my car, i went to the petrol station got the air hose and blew all the excess dust from around the front wheels and it worked a treat
You have what is known as sympathetic vibration . the cure is to fit front brake pads with anti squeel pads already stuck to the back of them . you cannot buy the pads buy the way , do not fit new pads with the metal anti squeel plates , they do not work
Quite often this is due to movement of the pads on the cylinders. Pop the pads out, put a smear of 'Copperease' on their mating surfaces and on the edges in contact with the calliper.
JUST A SMEAR don't go mad with the stuff you do not want to lubricate the pads!
RoyS
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