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Lightweight Brake Discs/Rotors

Discussion in 'A3/S3/Sportback (8P Chassis)' started by Aviry, Jul 27, 2013.

  1. Aviry
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    Aviry New Member

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    Hi all,
    So i know my OEM S3 brakes are super heavy and tend to fade, so i was looking around for an upgrade.

    I read about all the possible upgrades (R8, Porsche, AP Racing, VWR and so...) Since Israel is a place that has regulation that makes importing Brakes components super hard and even expansive as hell, i have started to search for other options.

    Is there a good, LightWeight brake discs/rotors that can be a straight swap for the OEM 12.5KG?
    Will i benefit (brake fade wise) from a good drilled/slotted discs and good pads? or will i just enjoy less unsprung weight?

    i saw on AP Racing's site they have 345x30 "R32" discs. does that match the S3? how much weight would i cut? and should i expect better braking and less fade with this setup?

    Brake Gurus, help me here :/
    #1
  2. S3Alex
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    S3Alex Rarely neutral

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    The biggest weight penalty on the S3s brakes comes from the calipers themselves.

    They weigh twice as much as the VWR calipers I have,and the discs may save a bit,but nowhere near as much.
    #2
  3. Aviry
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    Aviry New Member

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    #3
  4. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    Buy drilled TTS discs. it's 1.5kg lighter a side. they come as 340mm not 345mm.

    They bolt straight on, they apparently can take more stick as the air directional vents are designed better.

    dont worry about the -5mm, that eliminates the horrible grooves you get on the 345mm discs.

    I have spoken to DaveB about these.

    Straight fit with normal calipers.

    £150 the pair + £12 postage.
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  5. S3Alex
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    S3Alex Rarely neutral

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    I see what you're getting at,but take into account the fact that the calipers alone are half the weight,and way more than twice as effective as the stock items.

    If the only thing you can easily get hold of is the discs,they will make a difference,especially with better pads.
    #5
  6. coreythorny
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    coreythorny Member

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    i will keep this in mind as mine will be done soon
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  7. Aviry
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    Aviry New Member

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    #7
  8. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    That price is a DaveB special, think this is his last set and they will get more expensive unfortunately.

    I almost ready for brakes, but im undecided, think I may look at some zerosixty ones.
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  9. S3Alex
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    S3Alex Rarely neutral

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    I'm giving a set of these a try on the rears,due partly to the lack of rear brake upgrades (apart from one that DaveB said is possible but difficult),with a set of Mintex 1155 pads,to restore a bit of rear balance on mine.
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  10. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    Nice to see we're on a similar wave length :rockwoot:
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  11. S3Alex
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    S3Alex Rarely neutral

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    DaveB gave me a quote and spec list for a total rear rebuild and it was serious,cost and time-wise.

    I have too many other things on the go right now,but getting a little more rear bias would be nice,and Dave suggested this as a compromise. :arco:
    #11
  12. coreythorny
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    coreythorny Member

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    pretty sure k-sport do a rear 8-pot upgrade
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  13. Sevv
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    Sevv Pushing the limits..

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    does it come with the cable for the E-Brake ?
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  14. S3Alex
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    S3Alex Rarely neutral

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    I may be reading their ad wrong but they quote for rear pads,and the other kits are front brake kits.

    In any case,I don't know of anyone else offering an 8 pot rear which would totally shift the bias to the rear......most of the braking is on the fronts,although I can't remember the exact percentages,but I know on my Escort it was heavily biassed to the front.
    #14

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