Brake Disc Corrosion

[Hugh Ross]

Bit of an old chestnut this - had new rear discs fitted by OPC in November and during a quick pre warranty renewal inspection this weekend was advised that they had corroded on inside, but could probably be recovered by skimming!
Did Keith Moon have this sort of problem parking in swimming pools?Usual likely reason, lack of use, garaged etc. I am very careful about drying it off before garaging, garage is a bit damp in the winter though , I leave a dehumidifier running .
This seems a bit extreme though - skimming after 6 months? Trusty 944 used to be parked up for months on end and was on same discs after 7 years of ownership - same garage.
Front discs will need replaced soon, never been that happy about the brakes.
Thoughts/advice appreciated - I know they don't make them like they used to but.....
Hugh

 

[Geoff_Fields]

This is such a common complaint with most modern cars not just Porsche. In this case though it does seem strange that the problem as resurfaced so soon. (sorry, couldn't resist the pun)[] Maybe you should check that the calipers are working correctly and applying sufficient force to the pads on both sides of the discs. The rears do tend to get an easy life with most braking effort going to the front wheels.

 

[sawood12]

There is the same thread over on the Boxter forum at the moment. I'm convinced that Porsche have cheapened the disks over the years. Porsche may tell you they have changed the metal to address things like squeal but I don't believe it. I've never heard of brake squeal being an issue on 944, 993's or any pre-996/Boxter model you care to mention - and even then you can usually solve it with a smear of Copperslip or using different pads. Porsche are simply are using a cheaper metal in the disc manufacture so I don't think there is much you can do about it. The aftermarket discs are not much better and will probably suffer more from warping than OEM disks. I wonder if you can get 993 discs to fit a 996??

 

[philippe]

Hugh

If you have only had them for 6 months then they must be covered under warrany? I know this is not the point but at least you will not have to pay for new ones.

I had to have mine replaced and now drive 2-3 miles before putting it away in case the same problem comes back, i must say it is a bit of a hassel

Phil

 

[Hugh Ross]

Phil
Good point - will have a go at this. Is any work/parts covered by a one year warranty?

Geoff - thanks - had calipers freed up approx one year ago.

I think its time for front discs sooner rather than later and get rears sorted out.

Hugh

 

[Rotorhead]

I doubt very much if this is covered under warranty.

 

[SambaMav]

New disks are only 60 quid each, so not to much of a financial drama to replace. But I would be gutted if they need replacing every 6 months. My C4 has done the same, the rears need replacing while the fronts are fine.

Mav

 

[philippe]

Hugh

I thought all parts are covered by a 2 year warranty and if they need replacing then the labour to do this would be as well, unless they have not been treated as what they were designed for.

I may be wrong?

Phil