Rusted discs mot pass or fail?

[davidpeebles]

Hi guys,

I have a 2014 golf gtd which has only done 31k miles.

My mot is due next month and my rear discs look really rusted. The braking doesn't feel too good either!

I'm wondering if someone could look at the pic and let me know if it would be an mot pass or fail?

[DuraAce]

Depends on the testers opinion of them, not ours!

If he views them as "seriously weakened" then you'll fail, otherwise just an advisory for "corroded but no seriously weakened" (or words to that effect)

[cuprabob]

Sadly that's typical of VW rear discs these days. I know it's causing a lot of issues for dealers with unhappy customers.

In my opinion you will just get an advisory on those.

[paintman]

Have a look at 3.6 2c
https://www.mot-testing.service.gov.uk/documents/m...

The condition of the discs and your comment that the brakes aren't up to much may also result in a fail on the brake tester so IMO worth sorting it out - incl checking the calipers are working OK - before the test.

[davidpeebles]

Thanks for the response guys. Don't mind paying to get them changed to avoid the fail just wondering why on earth they look like that after only 31k and not even 3 years old!

Anyone think maybe the calliper pin has seized and causing them not to work properly?

Never had a golf gtd before and coming from a scirocco I just assumed the brakes were rubbish in comparison to the Rocco but now looking at the brakes I'm thinking it's down to the rears not working properly.

[stevieturbo]

davidpeebles said:

Thanks for the response guys. Don't mind paying to get them changed to avoid the fail just wondering why on earth they look like that after only 31k and not even 3 years old!

Anyone think maybe the calliper pin has seized and causing them not to work properly?

Never had a golf gtd before and coming from a scirocco I just assumed the brakes were rubbish in comparison to the Rocco but now looking at the brakes I'm thinking it's down to the rears not working properly.

Exactly that, lack of use leads to early corrosion, calipers seizing etc etc.

[Welshbeef]

davidpeebles said:

Thanks for the response guys. Don't mind paying to get them changed to avoid the fail just wondering why on earth they look like that after only 31k and not even 3 years old!

Anyone think maybe the calliper pin has seized and causing them not to work properly?

Never had a golf gtd before and coming from a scirocco I just assumed the brakes were rubbish in comparison to the Rocco but now looking at the brakes I'm thinking it's down to the rears not working properly.

Mine are 7 years old c90k miles and gleaming centre to edge without any scoring and a fiddly lip.

[lucido grigio]

And rear brakes do so little % of work that it's easy for them to rust.

[Sheepshanks]

Bear in mind they generally look worse on the inside face. It won't fail MOT on the surface corrosion but might fail the actual brake test although I think that's pretty unusual. The brake 'balance' (I forget what the proper name is) across the axle might be a bit trickier.

You could prevent it by doing regular heavy stops - but then you'd wear out the brakes earlier, and reduce the life of the tyres a bit.

[227bhp]

MOT or not, get them looked at, you shouldn't wait until someone tells you they're 5hit when you already know they are.
It is a bit poor on that age/mileage though, could be seized caliper or bias valve.

[Welshbeef]

Cruise control certainly helps keeping them clean.

But given yours have lips and clearly lower braking efficiency than they should Rio them off get some new ones on and CHANGE the brake fluid every max 2 years.

[lucido grigio]

Welshbeef said:

Cruise control certainly helps keeping them clean.
.

Kindly explain this please.

I can think of no reason how using cruise keeps discs clean......

[E-bmw]

lucido grigio said:

Welshbeef said:

Cruise control certainly helps keeping them clean.
.

Kindly explain this please.

I can think of no reason how using cruise keeps discs clean......

Looking forward to reading the reply to this one.

[davidpeebles]

Okay had them checked this morning and told need new discs and pads.

I've been advised brembo are better than oem vw, does anyone think that would be right?

Cost for new pads, discs and brake fluid change - £250 (baring in mind I have electronic handbrake). Seems reasonable?

[helix402]

Gen VW discs are better than Brembo.

[Little Pete]

davidpeebles said:

Hi guys,

I have a 2014 golf gtd which has only done 31k miles.

My mot is due next month and my rear discs look really rusted. The braking doesn't feel too good either!

I'm wondering if someone could look at the pic and let me know if it would be an mot pass or fail?

A few years ago these would definitely have failed but the failure criteria now is they have to be seriously weakened.
You can thank the fast fits for the change in wording.

[lucido grigio]

E-bmw said:

lucido grigio said:

Welshbeef said:

Cruise control certainly helps keeping them clean.
.

Kindly explain this please.

I can think of no reason how using cruise keeps discs clean......

Looking forward to reading the reply to this one.

Well Mr Beef has been online yesterday and today but doesn't seem to have anything to add to this.
Quelle surprise !

[Munter]

lucido grigio said:

E-bmw said:

lucido grigio said:

Welshbeef said:

Cruise control certainly helps keeping them clean.
.

Kindly explain this please.

I can think of no reason how using cruise keeps discs clean......

Looking forward to reading the reply to this one.

Well Mr Beef has been online yesterday and today but doesn't seem to have anything to add to this.
Quelle surprise !

I've seen it suggested in the past that the reason E90s always seem to wear their rears out more than fronts, is the car using them to slow the car a tad under cruise control, when going down hill. But I was never sure if that was balls. It did seem remarkably good at not gaining speed downhill where other cars do though.

[lucido grigio]

Sounds like balls.

Why would the car only apply rear brakes ?

[ATG]

In my case it's because it takes me a few seconds of random button stabbing to turn cruise control off when it is about to stack me into the car in front. And I have to put my phone down too. So then I really have to stamp on the brakes. It's definitely cruise control's fault.