DBS Carbon Ceramic Matrix disks

DBS Carbon Ceramic Matrix disks

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Discussion

Scottsanders

Original Poster:

89 posts

112 months

Wednesday 17th December 2014
quotequote all
Hi,

I have an issue with the front set of CCM disks on my 2009 DBS, in that there is significant feedback through the steering wheel when braking from high speed, and the AM dealer has told me that this is because they have had a set of pads fitted, but they haven't been bedded in correctly. They also squeal like a banshee when braking at very slow speeds, and they have also attributed this to the same issue.

If you look at the disks, you can see a portion that is worn more than the rest (about 70/30 split I guess) so in essence there is a ring that is shinier covering about 30% of the disk. (it isn't a noticeable ridge, just a change in the surface shine) If you compare this to the back set, the back set is evenly worn/shiny.

I've been told by the AM dealer that they will need to change the front set of disks and pads, at a cost of nearly £7k, so my question is, can anything else be done, prior to having them changed? Could they be milled to even out the wear, or would changing the pads and bedding them in properly this time help?

I will get them replaced if this is the only option, but thought it was worth asking before I did so.

Thanks in advance,

Scott.

L0TT0

2,465 posts

151 months

Wednesday 17th December 2014
quotequote all
Hi Scott.
Plenty recently posted about CCM issues
Maybe look here:
http://www.pistonheads.com/gassing/topic.asp?h=0&a...

I suggest you ignore the bhing and look just at the facts and examples of disc degradation that have been posted.

Just had my DBS fronts replaced by Works under warranty fortunately but would have taken it to Bamford Rose to get them done if I had to pick up the bill. May be worth you posting up a picture on the BR thread or email Mike so he can see what condition they are in and advise you suitably. I am aware of a car that has recently had a set of pads fitted and bedded in just as a stop gap measure and to 'finish off' the discs.

eta Just see you seem to be in the UAE even though your profile gives London as a location. Don't think BR have a branch there yet !!



Edited by L0TT0 on Wednesday 17th December 11:47

Cockernee

3,059 posts

159 months

Wednesday 17th December 2014
quotequote all
Significant noise on the forum about CCM issues at the moment and has been a concern for many. How long have you had the car? Any comeback on the dealer?

There is an independent on here that will do it cheaper than £7K, so that would save you money if you went down that route. Sadly the CCM's seem to be a ticking time bomb, either trackday use or chemicals have been used to clean them, either way they do not have the life expectancy we were all led to believe.

DB9VolanteDriver

2,612 posts

175 months

Wednesday 17th December 2014
quotequote all
Scottsanders said:
Hi,

I have an issue with the front set of CCM disks on my 2009 DBS, in that there is significant feedback through the steering wheel when braking from high speed, and the AM dealer has told me that this is because they have had a set of pads fitted, but they haven't been bedded in correctly. They also squeal like a banshee when braking at very slow speeds, and they have also attributed this to the same issue.

If you look at the disks, you can see a portion that is worn more than the rest (about 70/30 split I guess) so in essence there is a ring that is shinier covering about 30% of the disk. (it isn't a noticeable ridge, just a change in the surface shine) If you compare this to the back set, the back set is evenly worn/shiny.


Scott.
Before running off and paying ridiculous money to fix the problem, have a read of this service bulletin to see if it is descriptive of your issue. If it is, try the procedure yourself before doing anything else.

http://www.jcsne.org/content.aspx?page_id=22&c...

Then open "Links (Inactive)" menu tab and the pad bedding process link is on that page.


Edited by DB9VolanteDriver on Thursday 18th December 14:04

AMDBSNick

6,990 posts

161 months

Wednesday 17th December 2014
quotequote all
L0TT0 said:
I am aware of a car that has recently had a set of pads fitted and bedded in just as a stop gap measure and to 'finish off' the discs.
wavey

tonyhall38

4,194 posts

215 months

Wednesday 17th December 2014
quotequote all
you cant really tell if the discs are fked just by looking at them....in real terms they need to be removed and weighed....but am sure someone will be along to say otherwise.....


AMDBSNick

6,990 posts

161 months

Wednesday 17th December 2014
quotequote all
tonyhall38 said:
you cant really tell if the discs are fked just by looking at them....in real terms they need to be removed and weighed....but am sure someone will be along to say otherwise.....
When the surface of your CCM's resembles sand paper and you go through a set of pads in 1000 miles they are well and truly fked. I assure you wink

tonyhall38

4,194 posts

215 months

Wednesday 17th December 2014
quotequote all
well Mr Toms.....you should slow down a bit.....how have yours gotton so bad?....

AMDBSNick

6,990 posts

161 months

Wednesday 17th December 2014
quotequote all
tonyhall38 said:
well Mr Toms.....you should slow down a bit.....how have yours gotton so bad?....


tonyhall38

4,194 posts

215 months

Wednesday 17th December 2014
quotequote all
you have mail

L0TT0

2,465 posts

151 months

Wednesday 17th December 2014
quotequote all
tonyhall38 said:
you cant really tell if the discs are fked just by looking at them....in real terms they need to be removed and weighed....but am sure someone will be along to say otherwise.....
Mine were removed and weighed - all ok BUT still had a problem so were replaced

L0TT0

2,465 posts

151 months

Wednesday 17th December 2014
quotequote all
AMDBSNick said:
tonyhall38 said:
well Mr Toms.....you should slow down a bit.....how have yours gotton so bad?....
Mickey and his mates rofl


AMDBSNick

6,990 posts

161 months

Wednesday 17th December 2014
quotequote all
L0TT0 said:
AMDBSNick said:
tonyhall38 said:
well Mr Toms.....you should slow down a bit.....how have yours gotton so bad?....
Mickey and his mates rofl

Oddly enough I found a dead Mickey o/s the garage this morning. Do you think he died from CCM poisoning scratchchin

Where is Woolders when you need him rolleyes

tonyhall38

4,194 posts

215 months

Wednesday 17th December 2014
quotequote all
This time of year.....he's pissed......

Little Donkey

1,544 posts

140 months

Wednesday 17th December 2014
quotequote all
Run your finger over the disk, it should feel like glass. If it doesn't, call your bank manager.

Scottsanders

Original Poster:

89 posts

112 months

Thursday 18th December 2014
quotequote all
@DB9VolanteDriver - the link that you posted just goes to the Jaguar Club login page - could you possible post the content in this link?

Thanks,

Scott.

DB9VolanteDriver

2,612 posts

175 months

Thursday 18th December 2014
quotequote all
Scottsanders said:
@DB9VolanteDriver - the link that you posted just goes to the Jaguar Club login page - could you possible post the content in this link?

Thanks,

Scott.
Forgot about that.

Use this link, then click on the 'Links (Inactive)' menu tab. You should then be able to open the link on that page for the pad bedding process. There are also links to some AMOC photos you may want to peruse.

http://www.jcsne.org/content.aspx?page_id=22&c...

cayman-black

12,625 posts

215 months

Thursday 18th December 2014
quotequote all
Doesnt work for me.

Scottsanders

Original Poster:

89 posts

112 months

Friday 19th December 2014
quotequote all
Yeah, I get the links, but when I click on the 'Pad bedding in process' link, it takes me to the login page again... if you could post the contents, that would be appreciated!

Thanks,

Scott.

DB9VolanteDriver

2,612 posts

175 months

Friday 19th December 2014
quotequote all
Would like to, but it is a PDF and only photos can be posted AFAIK.

Ask your dealer for a copy of SB-06-0353, dated 17 May 2012