Check the back face of your disks!!!
Discussion
How bad are these disks. I know now the experienced Porsche guys are aware of this, but anybody new to them, give them a good check in the rear face.
Mine just started making a bit of a grumble when braking, but looking through the spokes everything looked fine. Had a feel at the back face and they are shocking.
Eurocarparts had a 25% discount code running last weekend, so new Pagid disks and pads all round £280 in stock too. Took me about 4 hours to fit.
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Mine just started making a bit of a grumble when braking, but looking through the spokes everything looked fine. Had a feel at the back face and they are shocking.
Eurocarparts had a 25% discount code running last weekend, so new Pagid disks and pads all round £280 in stock too. Took me about 4 hours to fit.
[/URL][/URL][/URL][/URL][/URL][/URL]I had this too. Only found out after there was a sudden judder under braking. The outside was nice and shiny. It looked like the inside steel facing had delaminated from the rest of the disc. Here it is after I took a hammer to it to see how solid the remaining surface was - not very... 
Two years ago I had to replace the front discs on my Cayman daily driver as they were in this state. As the discs were perfect when I bought the car two years before that and I'd religiously dried them off after every wash, I was miffed to say the least.
So I came up with a theory that my regular commute does not generate enough heat build up in the brakes. This means that all the wet air channelled to the rear faces of the discs by the cooling ducts on wet journeys leaves the rear faces wet at the end of the journey as there's no heat to dry them.
So for the last two years, I've made a point at the end of a wet journey of getting the brakes warmed up. This is the only change I've made in how the car is used and the discs are perfect still.
So I came up with a theory that my regular commute does not generate enough heat build up in the brakes. This means that all the wet air channelled to the rear faces of the discs by the cooling ducts on wet journeys leaves the rear faces wet at the end of the journey as there's no heat to dry them.
So for the last two years, I've made a point at the end of a wet journey of getting the brakes warmed up. This is the only change I've made in how the car is used and the discs are perfect still.
I've posted on this topic in the past as I have never owned a car that rusts the backs of the discs anywhere as near as quickly and badly as my CS does. I've owned the car for six years, covered around 35K miles and am currently on my fourth set of discs. I'm of the opinion that it is a combination of, the cooling ducts directing water, salt, etc, onto the rear face of the discs, a backplate that has very little opening to allow them to dry, and possibly crap material (read high carbon content)used in the manufacture of them.
Very very common problem - Porsche make brakes that are good at stopping but unfortunately they all (except PCCB) do this - one of my old 911's looked like this after about 10k miles (1year).
I was told its due to air not getting around the back and drying out - apparently made spare if you put a wet car in a the garage or under cover.
You should be able to feel it through the pedal and steering wheel when breaking firmly from 70 ish down to 30 ish
I was told its due to air not getting around the back and drying out - apparently made spare if you put a wet car in a the garage or under cover.
You should be able to feel it through the pedal and steering wheel when breaking firmly from 70 ish down to 30 ish
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