Brakes rear discs ??

daiashthomas · 30th April 2007, 13:14

after 11000 miles should the rear discs have hairline fractures or cracks in them ?

TTDegs · 30th April 2007, 13:29

errrr - no!

Pottsy · 30th April 2007, 14:05

No. Is it both of them?

daiashthomas · 30th April 2007, 15:00

yep

and i have not been doing any hard braking never had to in an emergency yet either

Pottsy · 30th April 2007, 15:27

Hmm, I wonder how to best approach this. The problem is that the disc is classified as a consumable, so not covered by the warranty...

Firstly, you are sure you're not confusing brake pad marks:

disc_crack1.jpg

Or normal pitting:

disc_crack2.jpg

Real cracks are quite obvious, and will be a defect in the casting process.

The rear discs do next to nothing, so your pad wear should be small. The pad material starts at 9mm, and replacement happens at about 2mm, so if you could measure the pad thickness (say it was 7mm) you could ask "is it normal to have to replace the rear discs 3 times for every pad change"? If the answer is no, then you could persuade the dealer that he has admitted that the discs are not of merchantable quality.

I always approach these things with a bit of a laugh "you should see how bad those are!", trying to get the dealer to humorously agree.

Any photos?

daiashthomas · 30th April 2007, 15:35

i took the wheels off the rear and rubbed them with emmery cloth and sand paper as i thought it may be handbrake marks and they wouldn't budge?

no piccys.
car is with dealer atm for replacement of squeaky center air vents and tailgate struts

Pottsy · 30th April 2007, 15:44

They probably won't budge. Would you say they looked more like my photo, or more like this:

crackedrotor.jpg

daiashthomas · 30th April 2007, 15:46

more like your photo

Pottsy · 30th April 2007, 15:50

Has the dealer spotted it?

I'm going to guess that they're just pad marks - cracks are pretty obvious. If the dealer hasn't seen them, just ask him to have a look. You sometimes see a bit of a crazing on the disc surface, again nothing to worry about.

daiashthomas · 30th April 2007, 15:58

i think me and every other civic owner is quite paranoid LOL given the amount of time we been to the dealer with problems

30th April 2007, 13:14	#1 (permalink)
daiashthomas Wheelnut Join Date: 14th October 2006 Location: Nr. Swansea Posts: 81 Thanks: 0 Thanked 0 Times in 0 Posts	rear discs ?? after 11000 miles should the rear discs have hairline fractures or cracks in them ?

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This thread is about: rear discs ??, it's in Bugs, faults and irritations at the Honda Civic forum Civinfo; after 11000 miles should the rear discs have hairline fractures or cracks in them ?...

30th April 2007, 13:29	#2 (permalink)
TTDegs Super Moderator Civinfo master Join Date: 4th August 2006 Location: Cardiff Posts: 5,638 Thanks: 0 Thanked 0 Times in 0 Posts	errrr - no!

30th April 2007, 14:05	#3 (permalink)
Pottsy Administrator Civinfo guru Join Date: 10th April 2006 Location: Leics Posts: 4,775 Thanks: 7 Thanked 64 Times in 33 Posts	No. Is it both of them?

30th April 2007, 15:00	#4 (permalink)
daiashthomas Wheelnut Join Date: 14th October 2006 Location: Nr. Swansea Posts: 81 Thanks: 0 Thanked 0 Times in 0 Posts	yep and i have not been doing any hard braking never had to in an emergency yet either

30th April 2007, 15:27	#5 (permalink)
Pottsy Administrator Civinfo guru Join Date: 10th April 2006 Location: Leics Posts: 4,775 Thanks: 7 Thanked 64 Times in 33 Posts	Hmm, I wonder how to best approach this. The problem is that the disc is classified as a consumable, so not covered by the warranty... Firstly, you are sure you're not confusing brake pad marks: disc_crack1.jpg Or normal pitting: disc_crack2.jpg Real cracks are quite obvious, and will be a defect in the casting process. The rear discs do next to nothing, so your pad wear should be small. The pad material starts at 9mm, and replacement happens at about 2mm, so if you could measure the pad thickness (say it was 7mm) you could ask "is it normal to have to replace the rear discs 3 times for every pad change"? If the answer is no, then you could persuade the dealer that he has admitted that the discs are not of merchantable quality. I always approach these things with a bit of a laugh "you should see how bad those are!", trying to get the dealer to humorously agree. Any photos?

30th April 2007, 15:35	#6 (permalink)
daiashthomas Wheelnut Join Date: 14th October 2006 Location: Nr. Swansea Posts: 81 Thanks: 0 Thanked 0 Times in 0 Posts	i took the wheels off the rear and rubbed them with emmery cloth and sand paper as i thought it may be handbrake marks and they wouldn't budge? no piccys. car is with dealer atm for replacement of squeaky center air vents and tailgate struts

30th April 2007, 15:44	#7 (permalink)
Pottsy Administrator Civinfo guru Join Date: 10th April 2006 Location: Leics Posts: 4,775 Thanks: 7 Thanked 64 Times in 33 Posts	They probably won't budge. Would you say they looked more like my photo, or more like this: crackedrotor.jpg

30th April 2007, 15:46	#8 (permalink)
daiashthomas Wheelnut Join Date: 14th October 2006 Location: Nr. Swansea Posts: 81 Thanks: 0 Thanked 0 Times in 0 Posts	more like your photo

30th April 2007, 15:50	#9 (permalink)
Pottsy Administrator Civinfo guru Join Date: 10th April 2006 Location: Leics Posts: 4,775 Thanks: 7 Thanked 64 Times in 33 Posts	Has the dealer spotted it? I'm going to guess that they're just pad marks - cracks are pretty obvious. If the dealer hasn't seen them, just ask him to have a look. You sometimes see a bit of a crazing on the disc surface, again nothing to worry about.

30th April 2007, 15:58	#10 (permalink)
daiashthomas Wheelnut Join Date: 14th October 2006 Location: Nr. Swansea Posts: 81 Thanks: 0 Thanked 0 Times in 0 Posts	i think me and every other civic owner is quite paranoid LOL given the amount of time we been to the dealer with problems