MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: stealthwolf on November 24, 2013, 07:31:18 pm

Title: Scraping noise when braking
Post by: stealthwolf on November 24, 2013, 07:31:18 pm
Noticed this earlier in the week. When I brake, it makes the same sound as when it has been raining and the brakes have rust on them. This happens only at particular speeds (braking from 20-35mph). At higher speeds, I guess the combination of road and engine noises masks it. At lower speeds, I reckon it's because I don't need to apply the brakes as much.

There appears to be sufficient pad material left. No idea how to check about disc thickness or whether there's anything else causing it.

Suggestions?
Title: Re: Scraping noise when braking
Post by: Andy on November 24, 2013, 07:33:18 pm
could be some thing that has lodge it self in one of the calipers ie a small stone
Title: Re: Scraping noise when braking
Post by: Tortaruga on November 24, 2013, 09:13:07 pm
^^^This. Might be "sumat" caught between the disc and dust guard.
Title: Re: Scraping noise when braking
Post by: RetroRaz on November 24, 2013, 09:29:24 pm
i had this on my brakes too. I assumed it was just the fronts so i changed the pads and discs but the sound was still there. I checked the backs and they were down to the metal!

Get the back ones checked.
Title: Re: Scraping noise when braking
Post by: stealthwolf on November 24, 2013, 10:10:30 pm
Rear pads were replaced a couple of months ago. Any way I can check if there is something between pad and disc without taking the wheel off?
Title: Re: Scraping noise when braking
Post by: skard on November 24, 2013, 10:23:52 pm
Are there any score lines on the discs, or what you can see of on the pad?
Title: Re: Scraping noise when braking
Post by: Veee-dubber on November 25, 2013, 07:50:08 am
Time for new discs
Title: Re: Scraping noise when braking
Post by: stealthwolf on November 25, 2013, 03:24:37 pm
There is around a 1mm lip on the rear discs and around 1.5-2mm on the fronts (both inside and outside). This is a fingernail guestimation so might be wrong.

How much lip should there be?