Golf Mk7 Rear Discs Corroded
Discussion
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.

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

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...
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
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...
Alloys with large holes in the design are letting in Road salt, grime and damp me thinks...
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 ? Great way to make a simple job virtually impossible for the home mechanic without the current system.
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