Annual mileage on your 997???

[jasoncampbell1]

Hi folks,

Just a general question I hope people can post a reply to is what is your ruff annual mileage on your 911 etc????
I've since had a recent issue with my rear disc and have been told its down to under use??? ( rear discs corroded beyond saving and in need of being replaced after 11 months of fitting! Heavy grinding noise coming from rear disc when ever I use the brakes)
To my horror after nearly £1000 I find myself thing is it worth using genuine porsche parts if they don't last?
Any advice etc very welcome thanks guys

J

 

[garyw]

I used to do about 8K per year, mainly holidays and weekend trips.
I agree with what they are saying that it's from under use, but as mentioned in your other thread, if they are not being dried off after washing it could cause a build up much quicker...
The Porsche brakes do show signs of light brown corrosion just from sitting in the rain and that is easily removed with light braking.
My car sat outside for its entire life and only had one set of brake discs at 32K and that was down to the fact they had worn out.

My current car is exactly the same, if I wash it and then park it up, next day I find the brakes binding until a few presses of the pedal.

garyw

 

[Lancerlot]

Around 10K pa.

From your last post, you were going to make a warranty claim, How did this go?

Not well I am assuming from your latest query.

We have discussed the corrosion question previously, so I guess you now have a couple of alternatives, either clean the rotors up and see if they still fall within manufacturer's tolerances, then re-use them or if they're scrap, replace them.

I'm not sure there is much more advice that can be provided.

It's not unheard of for technicians to use light surface corrosion as an excuse for rotor replacement rather than bother refurbishing them, so maybe a second opinion is needed if you're unconvinced.

Regards

Clive.

 

[jasoncampbell1]

Hi guys
This is now with porsche customer services uk but will post out come. They are excessively pitted/corroded the noise is unbelievable and I don't know about you guys but I can't afford to spend £1000 on rear discs every 11 months on top of running costs. I feel annoyed that I paid good monies to have genuine parts fitted and was genuinely shocked to find out when I asked the technician to check out the noise from the rear that the discs needed replaced ( thinking I should have bought cheaper after market parts now?)
I will try up load some pics I've since after digging on the net found out average annual mileage on a 911 is between 4k for low and 9.5k for higher mileage this prob will be different to various forums.
I use the car twice a week regularly and keep it under a cover if it rains or snows.

 

[maxtraeger]

Agree with Gary - my old C2S sat outside for 4 years with an annual mileage of 4k and after washing the brakes quickly build up the unsavoury brown spots. But light braking removed them each time and I also never had the rear discs replaced in that time. So, a bit of bad luck I guess. Now with the PCCB on the TT no issues whatsoever and wheels don't ever need a clean - superb.

 

[Lancerlot]

ORIGINAL: maxtraeger
Now with the PCCB on the TT no issues whatsoever and wheels don't ever need a clean - superb.

and at £14K a set fitting them is a no brainer really. [8|][]

Regards,

Clive.

 

[snarf]

I've done a little over 27k in my C2S in just under 7 years. No problems with rotors - I dry them after a wash and the car is garaged when not in use.

 

[jasoncampbell1]

Forgot to mention I've had jct Newcastle inspect the car and another porsche specialist check them both have said need replaced due to excessive corrosion but porsche jct said they would try do something as of way of a good will gesture but not holding my breath I just want them to acknowledge that this should not have happened.
I'm not after some monetary gain or free discs, pads & fitting etc I would however like them to replace just the rear discs and I would be happy to pay to have them fitted I don't feel this is asking to much?? Apparently my car needs daily use or this is a common problem?

Well looking forward to the sun this weekend and trying to Get that corrosion off my discs with a bloody long run with loads of hard braking!!!

 

[garyw]

ORIGINAL: jasoncampbell1
Apparently my car needs daily use or this is a common problem?

It does not require daily use!! but Yes it is/can be a common problem - for reasons mentioned a fair few times already
I had mine stand for 3 weeks at a time and each time there was a build up which was removed by light braking.
It may have obviously gone to far for your discs or you've not been braking/cleaning the brakes off prior, as mentioned a skim could save the disc surface and give them another life.
I would not expect an OPC to offer this as it's not in their interests- new discs at £1000s of pounds is...[8|]

garyw

 

[al@broadway]

I would not expect an OPC to offer this as it's not in their interests- new discs at £1000s of pounds is...[8|]

garyw
[/quote]

My OPC in Cardiff always puts my car on the ramp and the technicians always go through the issues with me, they are not cost or bonus driven and offer sensible solutions if available so I find this type of comment inexplicable!

 

[evansash]

Another example of Porsche just ignoring an issue. Whenever i washed mine i made a point of going for a drive to dry the brakes off which preserved them and saved crawling around underneath with a hairdrier, particuarly when i knew i was unlikely to use the car for a prolonged period. Boxsters suffer the same.
No need to worry now with PCCB but something will bite me on these as apparently not the longevity claimed and the centre lock wheels are another story!

 

[Lancerlot]

ORIGINAL: al@broadway
My OPC in Cardiff always puts my car on the ramp and the technicians always go through the issues with me, they are not cost or bonus driven and offer sensible solutions if available so I find this type of comment inexplicable!

You're being slightly naïve if you think all centres operate in the same way. In my 35 years of Porsche ownership, I have had several experiences of OPC's "trying it on". So it pays to be vigilant. []

Regards,

Clive.

 

[Robin M]

See you live near the sea. I do too and my VW daily driver has had 4 sets of rear discs due to corrosion (every 2 years or sooner). Its a Diesel so its heavy at the front and the rears hardly get used. 1 set of front discs in 7 years due to wear. Even drying them off after washing does not help much as the salt in the air causes the corrosion whether in the rain or the wind so all year round. The Cayman lives in the garage when not being used and does not have the problem.

 

[garyw]

ORIGINAL: al@broadway

My OPC in Cardiff always puts my car on the ramp and the technicians always go through the issues with me, they are not cost or bonus driven and offer sensible solutions if available so I find this type of comment inexplicable!

Completely ignoring the financial aspects of this.. By replacing the discs and pads the problem is resolved with a warranty to boot.
By them skimming the disc any issues following lay at their feet and for them to resolve.
It makes sense in time and come back to put new equipment on. - this is for them - not you, your just paying for it.

Bear in mind that an inspection done the technician is looking for the disc to be serviceable for a certain timescale, unlike an MOT where it's for that day.
I think we can all appreciate the dealer saying that they are fine etc but is it worth the hassle of a customer returning 3 months later complaining of brake problems? - I'd say not.

Alan, stick with Cardiff as its good to read about a fair service/ response but I stick to my comment as its not the normal or even the best way for the dealer.

I have also noticed the difference between a club free inspection and the normal service ....[&:]

 

[Robin M]

Gary, Not sure there is any warranty on Disks or Pads due to the fact they are wear items unless there is an obvious catastrophic failure like a cracked disc or a pad that breaks up? If there is I would like to know what it is..... if its more than the above......

 

[garyw]

More so if they fitted new discs and pads and they were fitted incorrectly! giving you a warped disc after a few thousand miles, then you'd take it back...

I could have done my own discs quite happily but a slight bit of dirt may have caused it to not sit right- thus a warped disc and me paying for new ones- and as already mentioned, they aren't cheap, unlike it being the dealers issues if they got it wrong.

Also as you say if a pad or disc failed after a short time, I'd certainly be looking at the dealer to put it right..[]

 

[Z80]

Now 4,900 total miles in my September 2010 registered 997 Turbo S. So about 1.7K miles per year.

Cheers,

Greg

 

[Motorhead]

Just to add that, as I understand it, the ABS system pre-charges the braking circuit so that the pads are continuously in light contact with the discs. If this is the case, I can't really see why it is that only the inner surfaces of the discs get corroded.

Jeff

 

[tscaptain]

9k per annum for mine. The inner faces of the discs are just as shiny at the outers when it was up on the ramp recently. Shame about the cracks radiating from the holes....[&:] Still, will all need replacing at the next service and I figure 40k miles for a set of discs not too bad -especially as I have Pagid RS 29 pads, which I think might be a little harsher on the discs than OEM pads. (And a number of track days thrown in for good measure...)

Edit - looking up the posts - Greg (Z80), you need to get out more![]

 

[Motorhead]

ORIGINAL: tscaptain

Shame about the cracks radiating from the holes....

Had an interesting chat with a technician at a recent Cambridge PC clinic.

He recommended running a drill through the holes on occasions to clear out the rust and prolong disc life.

Sounds like a very sensible idea to me. Anyone had experience of this?

Jeff