Carbon Ceramic Brake Squeal
Carbon Ceramic Brake Squeal
Author
Discussion

magycks

Original Poster:

239 posts

96 months

Monday 1st June 2020
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Carbon ceramic brake squeal.. affects front left (mostly).

It's excruciating. Please help!

MY14 DB9.2

anonymous-user

84 months

Tuesday 2nd June 2020
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Same car.

I used to get lots of squealing from the brakes which was driving me nuts. Always happened when I had been using the car for commuting for a while.

I found that giving the brakes a good workout generally stops the brake squeal on ceramics. Just standing on them a few of times from a highish speed should clear them.

magycks

Original Poster:

239 posts

96 months

Tuesday 2nd June 2020
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soofsayer said:
Same car.

I used to get lots of squealing from the brakes which was driving me nuts. Always happened when I had been using the car for commuting for a while.

I found that giving the brakes a good workout generally stops the brake squeal on ceramics. Just standing on them a few of times from a highish speed should clear them.
I drive in London a lot which no doubt makes the squeal worse. However, I feel like i've given the brakes a pretty decent workout when i've gotten out of town yet the issue never goes away (unless it's wet). Are we talking multiple record 70-0mph times here?

What about things like copaslip on the back of the brake pads... is that a thing on these?

sweyant

3 posts

86 months

Wednesday 3rd June 2020
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As charismatic and engaging as the presenter was in those videos, I had difficulty tracking everything he was saying (as well as staying awake). Could someone possibly post the main points?

Gruff500

207 posts

268 months

Wednesday 3rd June 2020
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Not sure if this helps but I had a squeak on my vanquish ceramics (it's more unusual on these than the steel ones on other cars).

Turns out it was a handbrake pad sticking which is not uncommon - you could tell as it was slightly squeaking all the time even without the brakes applied. One home cure for this is some gentle short reversing with the handbrake on.

However - I did discover as part of the fault finding that brake pads can get a little rough when not bedded in, especially accompanied with consistent town driving so you can try some exuberant driving with braking to try and eradicate the squeak, otherwise (assuming its not worn pads or debris) its worth taking to a garage as they will have some options for fixing the squeak (champfer the rough bits on the contact edges around the pads) - depending on the use and mileage the ceramics thankfully shouldn't need any work but worth getting looked at sooner rather than later as they are pricey to replace!

Hope that helps!

Edited by Gruff500 on Wednesday 3rd June 21:45

N7GTX

8,304 posts

173 months

Wednesday 3rd June 2020
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Chamfering the edges of the brake pads very often helps. Simply remove the pads and using an ordinary hand file remove the edges at roughly 45 degrees. Many new pads already come with the chamfer on all the edges but this only extends around halfway down so as they wear a sharp edge will reappear.

Instead of using a copper based lubricant on the back of the pads, try using Cera TEC made by Mintex - under £3 on a Google search. Originally designed to stop brake squeal on certain Mercs.

Pagid also make this and available at Euro Car Parts. https://www.carparts4less.co.uk/p/pagid-ceratec-br... for £3.63

AstonZagato

14,247 posts

240 months

Saturday 6th June 2020
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I was plagued by this on my DBS from new.

The short-term fix is to do a few sharp decelerations from the national speed limit on a dual carriage way. I mean press the pedal as though your life depended on it (make sure there is nothing behind you, obviously). Do not stop completely - down to 10-20mph - and accelerate back up to NSL and repeat at least three times.

However, the first time you drive in stop start traffic, it returns.

The dealer tried several fixes: copper slip, chamfering the edges, etc. Not much fixed it. Eventually, they replaced the pads (under warranty in my case), and that eased it for quite a while.

I haven't had the issue on either of my Vanquishes so perhaps the latest pads have the issue beaten?