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Thread: 308mm as rear discs?

  
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    Question 308mm as rear discs?

    Is it possible to remove the 308mm brake setup from the front of my car and move it to the rear brakes dics, pads, calipers the whole lot?

    Car is an Astra coupe turbo if that makes any difference.
    Cleanest car awarded 'Fast Show' 2006 & 2007

    Total Vauxhall featured Sept 2007

    COUPE NOW SOLD


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    like all things, it is possible, but..

    you'd have to sort out the handbrake somehow
    ..and the back end would be overbraked, and that's not a good ides at all

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    your front brakes have to be bigger than the rears or like geoff said it will over brake at the rear. then the car will spin out and bye bye. back brakes only do a small percentage of braking roughly 25-30% at most.

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    Quote Originally Posted by car.crash
    your front brakes have to be bigger than the rears
    Thats what I am doing 322mm 4 pots on the front and my 308mm on the back
    Cleanest car awarded 'Fast Show' 2006 & 2007

    Total Vauxhall featured Sept 2007

    COUPE NOW SOLD


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    its the handbrake that becomes a problem, if youve got the money you can do what petes done and get the wilwood calipers with handbrake assembly, however even with CS4 a set of 4 pots will be enough, what make calipers you going for??

    MK4 1.8 16V Sport and MK5 CDTi Estate




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    That will still be overbraked - as Marc said, back brakes do sod all really.

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    do you have a porsche engine in there. 4 pots is more than enough. i have std sri brakes and there are spot on. maybe you need to use the gearbox when stopping

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    Quote Originally Posted by car.crash
    do you have a porsche engine in there.
    Not at the moment!
    Cleanest car awarded 'Fast Show' 2006 & 2007

    Total Vauxhall featured Sept 2007

    COUPE NOW SOLD


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    you could keep your stock rear calipers, and get someone to knock up up some extended mounting brackets for them.
    Coupe now being broken for parts
    You know the one

    Enquire within


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    Quote Originally Posted by DaveCoupe
    you could keep your stock rear calipers, and get someone to knock up up some extended mounting brackets for them.
    Not an option I'm afraid Dave, the front discs are vented whilst the rears are solid, so the front discs are too wide to fit inside the rear calipers. I'm looking into doing something similar myself, thinking of 300mm discs as I already have 325mm fronts, as the standard setup is 280/265 it's still within the standard specs range. The rears have a removeable carrier clamp so I'm looking at having a set made to accomodate the 35mm extra disc size. I've got a spare set of carrier clamps so I can use them as templates, it's exactly the same way that 888 used to fit the 300mm rear discs that Scott has on his 888.
    52 Astra G 1.8, 18" Mille Miglia alloys, 325mm Brembo 4 pot conversion, Coupe leather interior, Raid strut brace, Whiteline rear ARB, Irmscher bits (skirts, Carbon steering wheel, Bonnet extension, M3 mirrors, boot & roof spoiler), Reiger Rear Diffuser & Front Bumper, Koni Adj. dampers, 35/30 Vogtland springs, Duplex quad exit ASCAR stainless exhaust.

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