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Thread: e31 Brembo brake caliper question, please

  1. #1
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    e31 Brembo brake caliper question, please

    Morning!

    I am wondering if the brake rotor for an e31 US spec and Euro spec are interchangeable?

    I just made a purchase of e31 4pot calipers, and need a rotor set to go along with. I see the US spec rotor has a different part number than the Euro spec counterpart, however the dimensions are the same at 324mmx30mm.

    Can anyone confirm that the US spec rotor will match the offset of the euro spec Brembo caliper before I make a purchase?

    Thanks for your time.
    CURRENT:
    Racecar: '81 e21 320i Group2. GT28 @ 25psi, MS2, e28 M5 suspension/brakes underneath, forged, cammed, 400bhp, 2190lbs, etc, etc...
    Daily: '95 e34 540/6. DUDMD tuned, vogtland/koni, Schnitzers, other minor touches.
    Project: '94 525iT. S50 swapped, supercharger in the works, manual swapped, Airlift supsension, Mpars, Brembo's, clean machine.
    New daily: e60 530i sport package. Stock.

  2. #2
    moroza's Avatar
    moroza is offline MORΩN ΛABIA BMW CCA Member
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  3. #3
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    Quote Originally Posted by moroza View Post
    I remember looking into this and finding out that the later rotors are a bit lighter. My rotors were Centric 121.34035 and they worked fine.
    Thanks for the info. I'll do some more searching on the topic. Seems like a very infrequently covered topic. Really appreciate your data!
    CURRENT:
    Racecar: '81 e21 320i Group2. GT28 @ 25psi, MS2, e28 M5 suspension/brakes underneath, forged, cammed, 400bhp, 2190lbs, etc, etc...
    Daily: '95 e34 540/6. DUDMD tuned, vogtland/koni, Schnitzers, other minor touches.
    Project: '94 525iT. S50 swapped, supercharger in the works, manual swapped, Airlift supsension, Mpars, Brembo's, clean machine.
    New daily: e60 530i sport package. Stock.

  4. #4
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    Feel free to PM, but where did you find E31 Brembos and roughly how much did you pay? I'm asking for BBK research, nothing more.
    - Brent
    www.angry-ass.com

    Quote Originally Posted by danespann View Post
    Every E34 needs the same things in the end.

  5. #5
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    If they're lighter it may be a higher carbon metal composition. Assuming same dimensions
    Last edited by Billyj; 07-21-2017 at 10:42 PM.

  6. #6
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    E46 m3 disks fitted the e36 m3 when I put the 840i brembos on. Perhaps look day at the Dba calaligue to confirm the offset.
    BMW’s
    90 E34 M5
    84 E24 M635csi standalone ecu with coil on plug
    94 E34 540i/6 SC 5-17psi Flex fuel/standalone ecu
    97 Z3 2.8
    97 E36 M3 euro SC still u/c


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  7. #7
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    Quote Originally Posted by BleedsBlue View Post
    Feel free to PM, but where did you find E31 Brembos and roughly how much did you pay? I'm asking for BBK research, nothing more.

    I was tagged on Instagram by a friend. They were here in my hometown. Paid $350, and feel like it was a smoking deal.
    CURRENT:
    Racecar: '81 e21 320i Group2. GT28 @ 25psi, MS2, e28 M5 suspension/brakes underneath, forged, cammed, 400bhp, 2190lbs, etc, etc...
    Daily: '95 e34 540/6. DUDMD tuned, vogtland/koni, Schnitzers, other minor touches.
    Project: '94 525iT. S50 swapped, supercharger in the works, manual swapped, Airlift supsension, Mpars, Brembo's, clean machine.
    New daily: e60 530i sport package. Stock.

  8. #8
    moroza's Avatar
    moroza is offline MORΩN ΛABIA BMW CCA Member
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    E34T
    That was a good deal. I paid something like $750 for remanufactured ones shipped from the UK, including a core charge.

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