Porsche 981 Disc Problems

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Danny Davison
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Danny Davison PCGB Member
2018/05/16 13:10:49 (permalink)

Porsche 981 Disc Problems

Hi,
This might be an old issue to members but it's driving me mad. The history is I bought a 981 PDK from Porsche with 3000 miles. It came with a judder and Porsche Newcastle said it needed all Discs and Pads. This was paid for by the selling Dealer in London. Now 3000 more miles and the problem has returned. Porsche Newcastle say it needs new Discs and Pads again stating it has hot sports. I'm not sure what is going on and need to know if this so common and what is the root cause? I drive it from Newcastle to Carlisle each day and there is a bit of heavy breaking, but I've never had this problem with any other cars on the same route. Any idea guys as it's really destroying my Porsche ownership dream! I'm gutted.

12 Replies Related Threads

    Andrew_CS
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    Andrew_CS Guest of the Club
    Re: Porsche 981 Disc Problems 2018/05/16 13:48:12 (permalink)
    Where are the `hot spots` ... on all discs ?
     
    I have done 8k in the past nine months with no issues, wear rates indicate original equipment (11k prior to me). 

    Andrew
    981 Cayman S PDK
    Aberdeenshire (R2)

    Previously
    Cayman R Manual


    BrianJ
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    BrianJ PCGB Member
    Re: Porsche 981 Disc Problems 2018/05/16 13:52:46 (permalink)
    No such problems with mine after 26k miles. By the way, you've posted in the Macan forum, suggest you move to Boxster or Cayman depending on what your 981 is.

    Brian J
    Was 2003 986 2.7 facelift (80k in that).
    Was 2009 Gen II Cayman S (47k in that).
    Now 2013 981 Boxster S (29k so far)
    Derbyshire Peak District
    rowtietowers
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    rowtietowers PCGB Member
    Re: Porsche 981 Disc Problems 2018/05/16 15:34:18 (permalink)
    All sounds a bit strange to me. Through 4 different Boxsters, I’ve had to replace discs & pads once on 2 of them (mileage was well past 30,000 miles on each occasion from recollection). They just don’t wear that quickly - main issue is rusted discs from not taking the car for a run after washing - the downside of cross-drilled discs! I would query how they think the discs can have hot spots in view of the mileage - after all it’s a sports car! I would question the dealer further as it’s not acceptable to be shelling out that sort of money on a regular basis (I’m guessing circa £1,500 - £2,000) - sounds like it’s something more underlying causing the issue.
    tscaptain
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    tscaptain PCGB Member
    Re: Porsche 981 Disc Problems 2018/05/16 17:41:26 (permalink)
    Moved to the Boxster/Cayman forum.

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    ralphmusic
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    ralphmusic PCGB Member
    Re: Porsche 981 Disc Problems 2018/05/16 18:19:00 (permalink)
    Just to dispose of one possible issue, do you hold the brakes on whilst stationary after heavy breaking?
     
    Did your Porsche Centre or you take pictures of the "hot spots", were they pad deposits?
     
    Did they test the discs for distortion?

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    Danny Davison
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    Danny Davison PCGB Member
    Re: Porsche 981 Disc Problems 2018/05/16 18:49:30 (permalink)
    Hi, I've not seen the photos. I'm not sure regarding disc distortion which I will ask about. I do sit with my foot on the breaks but not immediately after heavy breaking. I don't understand how you cannot sit with your foot on the breaks pedal at lights, etc. How long do breaks need to cool down before putting the car away with the breaks on, but as I say I've never done heavy breaking then sat with the breaks on. I'm totally pussled as problems with discs has never happen with a cheap mini or my wife's car. In fact it's never ever happened to me before to have disc problems again and again that keep needing replacing.
    AndrewT
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    AndrewT PCGB Member
    Re: Porsche 981 Disc Problems 2018/05/16 21:11:04 (permalink)
    Could the brakes be overheating, maybe due to a binding handbrake or the PSM system which I believe automatically operates the brakes at times? 
     
    Is it just the front or rear brakes which are affected, or all of them? Manual or PDK transmission?
     
    Maybe your Porsche centre could use an infrared thermometer to measure the disc temperatures to find out whether one or more are excessively hot?
    Danny Davison
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    Danny Davison PCGB Member
    Re: Porsche 981 Disc Problems 2018/05/17 10:01:45 (permalink)
    Hi,
    It's PDK. Last time we started with the fronts then ended up replacing the backs as well. At the moment they are saying the fronts, but I've been here once before and as I say it happens after 3000 miles.
     
     
    Could the brakes be overheating, maybe due to a binding handbrake or the PSM system which I believe automatically operates the brakes at times? 
     
    Is it just the front or rear brakes which are affected, or all of them? Manual or PDK transmission?
     
    Maybe your Porsche centre could use an infrared thermometer to measure the disc temperatures to find out whether one or more are excessively hot?




    BrianJ
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    BrianJ PCGB Member
    Re: Porsche 981 Disc Problems 2018/05/17 15:02:56 (permalink)
    You haven't got the known problem with binding plastic bearings on the brake pedal pivot have you, which can prevent the brake pedal from releasing properly and hence keeps the brakes on slightly? I thought it only affected early 981/991 (like mine) and it normally throws all sorts of spurious warning messages on the dash, but might be worth a check. 

    Brian J
    Was 2003 986 2.7 facelift (80k in that).
    Was 2009 Gen II Cayman S (47k in that).
    Now 2013 981 Boxster S (29k so far)
    Derbyshire Peak District
    Motorhead
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    Motorhead PCGB Member
    Re: Porsche 981 Disc Problems 2018/05/17 17:17:29 (permalink)
    Danny,
     
    I'd agree with Brian's comment.
     
    Also, the brakes on modern cars operate in a "primed" condition, with the pads lightly touching the discs for maximum braking effort in the minimum time. Maybe your braking/ABS system isn't functioning correctly in this respect, but I would have thought that Newcastle PC should have been on top of this. In the first instance, I'd get them to bleed the system thoroughly.
     
    Jeff
     

    987.2 Cayman S
    North Bedfordshire
    PCGB R10 and R24
    Danny Davison
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    Danny Davison PCGB Member
    Re: Porsche 981 Disc Problems 2018/05/17 20:22:55 (permalink)
    Hi Guys,
    Thanks so much for your comments especially those that are suggesting known problems and solutions. It's invaluable help compared to the dealers that just want to take your money and send you on your way until it happens again. Truely invaluable. I'm pleased I joined the club.
    Regards
     
    Danny
    turbo jonny
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    turbo jonny PCGB Member
    Re: Porsche 981 Disc Problems 2018/05/17 20:35:52 (permalink)
    Regarding the known problem of overheating due to faulty bush mentioned above .
    I have a 2015 car . The PSM light came on and i took it to OPC Newcastle before the
    discs were damaged . So it affects all years of 981 . This was at 9k miles though .
    3k miles twice is very odd ...

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