Cupra R brake disc skimming

[DrStu]

Hi all,

Just wanted to write a post regarding the brake discs on the Cupra R ST. Mine have done 25,000 miles and were due another pad change but the discs were heavily scored. Rather than shell out the ~£700 for new discs I decided to go down the disc skimming route. I used a company in Manchester called Advanced Motorcare ltd and they did a great job. Cost £200 for both front discs skimmed+£60 labour for removal and refit of calipers. Would thoroughly recommend going down this route if you are in the same situation or if it is time to change pads and you want to improve braking performance and avoid brake squeal.

Brake Disc Skimming

In-situ brake disc skimming. Correct poor braking, juddering and extend the life of existing brake discs.

www.advancedmotorcare.co.uk

Stuart

 

[DigitalSushi]

Cheers mate, been looking for a place that offers this for mine in manchester.

A dodgy brake pad fitting by an even dodgier garage (Blackrod motors in Bolton if anyone is even thinking of having work done there, don't) I suspect has warped my front disks but I really don't want to change them as they are reasonably new.

They still stop but its a horribly unnerving vibration as they do it

 

[DrStu]

Cheers mate, been looking for a place that offers this for mine in manchester.

A dodgy brake pad fitting by an even dodgier garage (Blackrod motors in Bolton if anyone is even thinking of having work done there, don't) I suspect has warped my front disks but I really don't want to change them as they are reasonably new.

They still stop but its a horribly unnerving vibration as they do it

No worries. It can be a bit of a mine field finding a garage you can trust.

You just have to work out if the skimming is worth it depending on the cost and fitment of new discs.

 

[DigitalSushi]

No worries. It can be a bit of a mine field finding a garage you can trust.

You just have to work out if the skimming is worth it depending on the cost and fitment of new discs.

Yeh that's what I am trying to work out, think with mine not being the R its a lot closer in cost.

 

[pauly1299]

My ABT has done 25k and at the last SEAT service I raised the issue of the discs being marked by the pad pins. The service tech contacted SEAT and they said it's normal wear. So I considered having the discs skimmed, I contacted 5 or 6 of the nearest dealers advertised on the Pro Cut website, and none of them could skim the discs. So is disc skimming a thing of the past now?

 

[eltawater]

I doubt it's profitable enough for most to bother with. Outside of performance cars, discs can be had from a motor factor for less than £50 a pair. By the time a garage has taken up a bay with a vehicle, got the wheels, caliper, carrier and disc off and charged the labour up till that point, you've then got to balance the time consuming the bay and the member of staff skimming the disc vs just putting a new pair on and the profit margin in those.
The loss of opportunity cost is too great when you could be charging £100 an hour diagnostic fee to the next customer.

 

[pauly1299]

Interestingly Cambridge Porsche were one of the dealers on the Pro Cut website, they would only skim Porsche discs I believe though. A pal of mine had his RS3 discs skimmed a while back, but that was by a one man band indy garage I think. Only took 45 minutes . So £120 is worthwhile then probably.

 

[tracktoy]

Dont know about the Disk's on the OP motor but I do know that I had some Alcon disk's on my MK3 that due to a wheel baring going had been messed up and was told they did not support being skimmed. Might be B Shi* but that is what I was told at the time (it was a few years ago now)

 

[SuperV8]

Dont know about the Disk's on the OP motor but I do know that I had some Alcon disk's on my MK3 that due to a wheel baring going had been messed up and was told they did not support being skimmed. Might be B Shi* but that is what I was told at the time (it was a few years ago now)

The OP had an 'R' which have the big 370mm composite Brembo discs.
Composite meaning - Alloy bell - with pins to the iron rotor.
These are £300-400 a disc from memory - I could probably make a case for trying disc skimming if I had these sort of discs - but for the usual 340mm and under full cast iron discs used on Cupra's/Golf R's/GTI etc.. skimming just simply not worth it - A couple of good aftermarket new discs is cheaper - and will be better machined.
All on car discs skimming machines are relying on the cars own hub bearing for running accuracy and rigidity - which are no where near as good as the huge CNC machining centers where the discs are originally machined.
Disc tolerances are getting tighter and tighter - with modern discs being machined to under 10 mircons disc thickness variation!

 

[pauly1299]

Are RS3 discs the same as the TT-RS discs

 

[Bluepower]

Are RS3 discs the same as the TT-RS discs

No, offset is a little different!

 

[pauly1299]

No, offset is a little different!

Thanks. I think there are differences between early and late TT-RS discs also?

 

[Bluepower]

Thanks. I think there are differences between early and late TT-RS discs also?

That I don't know, sorry

 

[SuperV8]

Thanks. I think there are differences between early and late TT-RS discs also?

correct.

early TTRS is the same as the Leon I believe at 370x32.

The later one is 370x34.

 

[pauly1299]

Pity, a trader not far from me has OE RS3 discs for around £525. I don't need new discs at the moment, but I haven't seen them under £600.

 

[SuperV8]

The OEM disc 8J0615301K is listed at £353.00 each (OE price).
I can see some aftermarket versions appearing now with Apec DSK3572B at £369 for a pair.