Brake disc thickness.

Discussion in 'General chat' started by Singvogel, Dec 20, 2019.

  1. Singvogel
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    Singvogel Staff Member Moderator WARLORD Site Supporter

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    Can anyone confirm the thickness of the brake discs on my F30 330d M-Sport with standard brakes.

    I'm having difficulty reading the numbers stamped on the discs themselves - should have gone to specsavers perhaps - but really ought to have taken a note of the minimum thickness when the discs were new - nice shiny clean and easy to read.

    I believe, but am not sure that the sizes are as follows.

    Front discs when new: 24.00 mm and a minimum thickness of 22.4 mm

    Rear discs when new: 20.00 mm and a minimum thickness of 18.4 mm
     
  2. Adie
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    Adie WARLORD Site Supporter

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    Last edited: Dec 20, 2019
  3. slim_boy_fat
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    slim_boy_fat WARLORD Site Supporter

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    Iircm Bob, it's in the Owners' Manual?
     
  4. Cotswold BMW
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    Cotswold BMW WARLORD Site Sponsor

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    Catalogue also says,

    24 new and min.th. = 22,4 mm
    20 new and min. th. = 18,4 mm
     
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  5. Singvogel
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    Singvogel Staff Member Moderator WARLORD Site Supporter

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    Thanks folks - I'll now get the micrometer out.
    @Cotswold BMW

    Hi Ed,

    Could you give me a price for a set of front pads, front discs, and the brake pad wear sensor, please?
     
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  6. Cotswold BMW
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    Cotswold BMW WARLORD Site Sponsor

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    Sure :)

    Front pads £100.81
    Front sensor £18.65
    Front discs pair £169.30
    = £288.76

    Give us a call to place an order on 01432 375555 and please quote reference number 17631
    Alternately, you can send payment via paypal.me/cotswoldhereford or to partshereford@cotswoldgroup.com . Please send payment as a gift, including quote reference number, phone number and delivery address inc postcode in the notes.

    Thanks
     
  7. a.s.uk
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    a.s.uk WARLORD

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    What’s the mileage bob...
    Are you being a bit keen.. our 640d is on 80k ... discs are below min thickness, but show no sign of distortion yet..
    Normally second pad change for me is a disc change as well..


    Sent from my iPhone using Tapatalk
     
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  8. Singvogel
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    Singvogel Staff Member Moderator WARLORD Site Supporter

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    I think you're right.

    I just checked the disc thickness this afternoon and they are both at 23.2 mm after 56K miles.

    So it looks like I'll only need a set of pads this time.

    The i-drive 'countdown' says new pads are needed in 2500 miles so that'll take me to about February.

    The dealership that did my oil-change and MOT offered to change the pads (and discs if needed) for me last month - as they said , correctly that they wouldn't last until the next service.

    Now that I'm better informed I reckon I'll hold off until the pads really reach the end of their life.
     
  9. Kev2005
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    Kev2005 WARLORD Site Supporter Good Egg

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  10. Mieke
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    Mieke WARLORD Site Supporter

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    Yes, you'll have to get your sleeping bag out and join the rest of the punters camped out at the dealership, ready for that dawn stampede. :ROFLMAO:
     
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