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Brakes/Hubs Brakes, Hubs, and etc

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post #26 of 64 (permalink) Old 6th March 2013
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Re: Sanding brake discs

Where I live if any more than 25% of the braking surface of either side of a disc is corroded then it is an MOT fail.

Their reason being, even it passes the brake efficiency test the brakes will tend to suffer brake fade fairly quickly as the corroded area will not be able to disapate the heat in real life conditions when brakes may be in extended use for periods of time such as long down hill runs or steep hills.

In my opinion as the MOT brake test is only a test of the brakes efficiency over a few seconds of use and can never reflect real driving conditions.

In my area there are very few steep hills or mountains but if I lived in a mountainous area I would want the best under my foot.
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post #27 of 64 (permalink) Old 6th March 2013
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Re: Sanding brake discs

Well I cant even say I was close on your location, A mate used to do the service in Oz not seen one over here but will try to find out, though part prices are I am told much higher over there so its worth having things reconditioned, my car as no rust after 8 years on UK's salt ridden roads so I wounder how come yours seems to have done so badly.

Who would design a vehicle that falls over when you stop?

If you find a fix for your problem please let us know it will help others.
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post #28 of 64 (permalink) Old 8th March 2013
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Re: Sanding brake discs

I'd still like to see a Pici !!!
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post #29 of 64 (permalink) Old 8th March 2013
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Re: Sanding brake discs

Originally Posted by davesss View Post
When I had my last MOT the examiner said he cannot fail the discs if the braking test passed it, even if they are rusty!
That's not strictly true,for a disc to fail on corrosion it has to be deemed to be unsafe,i.e very heavily pitted and likely to fail under heavy braking.Whether it passes or fails the brake test is irrelevant,it is just down to actual condition of the disc.

The pass standard is pretty awful here,I once had my wrists slapped for failing a (what I considered to be) badly corroded disc.
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post #30 of 64 (permalink) Old 8th March 2013
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Re: Sanding brake discs

While were waiting for the pics ..
How old are these discs in mileage terms?

I had one total disc failure that I related here before.
To cut it short.
The disc broke away from the hub.It was paper thin at the hub area of the pads and I never realised because there was plenty of thickness towards the outer edge.

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