Golf Mk7 Rear Discs Corroded

Golf Mk7 Rear Discs Corroded

Author
Discussion

Scooby2020

Original Poster:

2 posts

102 months

Wednesday 25th January 2017
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Hi, I have a 2014 VW Golf GTD and noticed the rear brake discs are in a very poor condition through corrosion. I have taken it to the dealers and they tell me they need replacing but will not cover them under warranty despite pads only being 15% worn ?

I drive the car 20 miles a day, braking hard several times per day as i come off motorway from 90 mph to zero.


Ninja59

3,691 posts

127 months

Wednesday 25th January 2017
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Is the pad even making full contact with disc? That picture makes it look like it is not making proper contact (hence the clear section part way up?).

If used regularly then a large proportion of the disc (possibly excluding some of the edges near the outer portion and centre) should be completely "clean". Although with these being rear disc and brakes then they will be used less than the front. It might be worth *carefully* not fully releasing the handbrake (if possible as an EPB would stop you) to help keep the handbrake active and therefore cleaning the discs up. If not whip the wheel off and clean the corrosion up, if it re appears then in honesty something else is not quite right...

Edited by Ninja59 on Wednesday 25th January 18:43

carlingofblack

363 posts

179 months

Wednesday 25th January 2017
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I know the feeling. My Alfa Mito (leased) has performed exactly the same stunt at around 3000 miles and Alfa would not budge on a warranty repair. They would cough up half the cost but I actually declined as I felt in principle, that at that mileage it was still their responsibility. 30,000 miles later, they have cleaned up a bit through use and planned fast/hard stops. The car goes back in 8 months so I'm in no hurry to change them myself and I have been assured through two services that while they can be noisy and obviously look less than ideal, they work to a good level.

Alloys with large holes in the design are letting in Road salt, grime and damp me thinks...

400SE Dave

1,301 posts

186 months

Wednesday 25th January 2017
quotequote all
Rear discs do not get the same use as front ones, brakes are biased to the front. Not unusual to see this imo.

Do the job yourself, £100 max

Yipper

5,964 posts

105 months

Wednesday 25th January 2017
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It is a known, common issue on recent Golfs.

Scooby2020

Original Poster:

2 posts

102 months

Wednesday 25th January 2017
quotequote all
400SE Dave said:
Do the job yourself, £100 max
Thought about doing it myself but dont know about the electronic handbrake ? How to keep it dis-engaged and how to reset the rear caliper ?

Skyedriver

20,598 posts

297 months

Wednesday 25th January 2017
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My wifes old Peugeot 306 HDi used to be very bad in this respect. I guess she was pretty light on the brakes and the rear calipers used to seize with incredible regularity

adam85

1,264 posts

206 months

Wednesday 25th January 2017
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Just had my rear discs & pads changed on my mk7. 2013 and 44K miles, they looked the same as yours

rossw46

1,293 posts

175 months

Wednesday 25th January 2017
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I have an early 2015 GTD, I'll check my discs tomorrow...

MG CHRIS

9,297 posts

182 months

Wednesday 25th January 2017
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Scooby2020 said:
400SE Dave said:
Do the job yourself, £100 max
Thought about doing it myself but dont know about the electronic handbrake ? How to keep it dis-engaged and how to reset the rear caliper ?
You need diagnostic equipment either vag com or what most garages will use snap on system, auto diagnose etc. Once reset you need a caliper wind back tool to push the piston back slowly.
Great way to make a simple job virtually impossible for the home mechanic without the current system.

jonwm

2,618 posts

129 months

Wednesday 25th January 2017
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I had this on a 2012 Leon, it never got any better, Seat checked braking efficiency and all was good, over my 3 and a bit years of ownership they got worse than yours.

Quite common on the Vag range at that time, A3, Leon and Golf suffered

Pothole

34,367 posts

297 months

Wednesday 25th January 2017
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Skyedriver said:
My wifes old Peugeot 306 HDi used to be very bad in this respect. I guess she was pretty light on the brakes and the rear calipers used to seize with incredible regularity
306 rear calipers are notorious