Disclaimer: I've never worked on cars ever, so I know basically nothing.

Our vRS has been giving off some grinding noises when braking lately. I visually checked the pads with the wheels off and they all looked like they have plenty of life left in them. Pinpointing the location of the sound was difficult, but it did sound a bit like it came from front right. Checked the disk and pulled the caliper today.

Just what the hell is going on here? One inverted groove about 1cm thick all along the disc, with some parts looking like larger flakes of metal has been torn off. You can see the same scoring on the brake pad.

What causes this? And more importantly, do I have to change disks and pads now?

You certainly need to replace the discs, and you might as well replace the pads.

(in the UK a complete set of Discs and pads for front and rear can be had for £140 or so.)

 

Some love and attention and cleaning up required it seems.

Sodium on the roads does tend to do that to the discs.

 

At 3 years old it was time for the Brake Fluid changed, so if not done worth doing now.

Edited 21 March, 201610 yr by GoneOffSKi

Yeah it's been winter so the cleaning part had definitely suffered for a while. And in Norway there is more than enough salt on the roads, that's for sure.

All that glitters or shines is not gold. (sadly)

 

Winter salted roads take their toll.

My almost 6 year old vRS is looking very tired and abused this spring, probably because it is.

 

The Back Box was new last year and the Discs and pads were (about 12,000 miles ago)

New springs were on last year as well.

 

Some care and attention & spring cleaning needed as the Dirty Wee Bisom is running great and behaving her self.

A little lube will have her looking a bit better.

 

*1 year ago the new discs in the last pictures went on, another set ordered for Tuesday.*

Edited 25 March, 201610 yr by GoneOffSKi

I have similar issues. My brakes make a grinding noise when coming to a stop. It had new discs and pads all-round. Just before I bought the car last year. I had it serviced at Skoda. No issue. Anyhow its going to Awesome gti next week. Who provide a brake skimming service. I think it might be worth getting done. Even if replacing all round. (provide funds allow lol) it should prevent future problems and premature wear on a new set. And hopefully save me having to replace my 6 month old set. Hope this helps.

I have similar issues. My brakes make a grinding noise when coming to a stop. It had new discs and pads all-round. Just before I bought the car last year. I had it serviced at Skoda. No issue. Anyhow its going to Awesome gti next week. Who provide a brake skimming service. I think it might be worth getting done. Even if replacing all round. (provide funds allow lol) it should prevent future problems and premature wear on a new set. And hopefully save me having to replace my 6 month old set. Hope this helps.

Anything interesting getting done at awsome gti

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Bought new pads and rotors, just read caliper guide pins should be replaced when changing pads.. Will have to put the job on hold until I can get hold of some.

It'll get a good cleaning first, it's hard staying on top of it when it's -20.

Edited 26 March, 201610 yr by larsberg

Bought new pads and rotors, just read caliper guide pins should be replaced when changing pads.. Will have to put the job on hold until I can get hold of some.

It'll get a good cleaning first, it's hard staying on top of it when it's -20.

load of rubbish, Give the pins a good clean and lube with copper grease. NOT normal grease as that dries up and gathers grit ect and causes more problems.

Threadlock too perhaps? Got copper grease on hand.

Bought new pads and rotors, just read caliper guide pins should be replaced when changing pads.. Will have to put the job on hold until I can get hold of some.

It'll get a good cleaning first, it's hard staying on top of it when it's -20.

Pay someone to do it lol. Where are you at -20?

I'd be curious to know what Skoda workshop info says on lube for the caliper pins??     I'm not a fan of putting copper grease where it's not needed.

I used rubber grease last time but have used white(spray) grease in the past.

Anyone?.......

Looks like on the second picture, part of the dust shield or ball joint heat shield has been rubbing on the disc where the groove is.

 

When you replace the discs, I'd make sure that nothing is rubbing on them.

I'd be curious to know what Skoda workshop info says on lube for the caliper pins??     I'm not a fan of putting copper grease where it's not needed.

I used rubber grease last time but have used white(spray) grease in the past.

Anyone?.......

 

Copper grease is to stop things seizing up, for moving parts like the slide pins I would just use general purpose grease. If the little protective boot is intact and they are moving freely there is probably no need to re-grease them

There are reasons for Greases for uses.

Like Lith-Moly (bearings), & Red Rubber Grease being non petroleum based, Copper Slip (grease) staying put (Anti Seize),then you have White Grease (White Lithium) etc

Brakes get hot, hot grease on friction surfaces, and some H20 is not a good combination.

What ever you do with Grease and Lube is use sparingly, especially when dealing with brakes.

But then Mechanics and Engineers served their time to learn these things.

What boils my p155 is seeing copper grease caked on a bonnet catch (after I've just brushed my head off it!), and on door hinges-why!......and the ultimate shaking of the head must be battery terminals plastered in the stuff.

Hey ho. 

I love my Petroleum Jelly for my terminals,

and if on a rubber glove it could be used by those that think Copper Slip is a multi use grease to stick some where the sun does not shine.

Pay someone to do it lol. Where are you at -20?

Norway. It's not -20 now, but keeping the car clean during winter is a challenge.

Looks like on the second picture, part of the dust shield or ball joint heat shield has been rubbing on the disc where the groove is.

 

When you replace the discs, I'd make sure that nothing is rubbing on them.

The thing is, the groove sticks out from the disc, not cutting into it.

The thing is the OEM. Pads outlast the OEM discs in many cases with VW brands, but I have not been much better with the ones I have fitted, 4th set of discs on the car, it comes from using the DSG more thwy the brakes to slow down. The brake pedal mostly used to clear rust off the discs.

The thing is, the groove sticks out from the disc, not cutting into it.

Sorry! Hadn't noticed that.

The thing is the OEM. Pads outlast the OEM discs in many cases with VW brands, but I have not been much better with the ones I have fitted, 4th set of discs on the car, it comes from using the DSG more thwy the brakes to slow down. The brake pedal mostly used to clear rust off the discs.

I try to use the brakes as much as possible to void this, but I've only had the car since october so the previous owner might have driven it differently. Not to mention my girlfriend.

This turned into a way more informative thread than I expected!