M135i/235i Brakes on an E46???

Discussion in 'E46 M3 (2001-2006)' started by Johnny1983, Nov 2, 2017.

  1. 11 Nov 2017 at 8:00 PM #41
    Johnny1983

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    So will the e90 discs fit without machining? Or do they need turning down to say 357mm to fit in the caliper?
     
  2. 11 Nov 2017 at 10:13 PM #42
    davenwalk

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    If you PM your number to me, I will send a video via whatsapp and you can see for yourself how close it is. The disc still spins, so IMO 359mm will be fine - probably even taking the hard edge of the disc will make the difference (i.e. Give it a bit of a bevel).
     
  3. 11 Nov 2017 at 11:56 PM #43
    Salrav1

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    Dave and I did say this afternoon that before we told anyone that the M135i Brembos fit , we should buy up all the calipers on Ebay:muttley:but then decided that would be really mean.It will be a pleasure to help anyone else on Cutters who wants to do the conversion so please feel free to message me and I am pretty sure Dave will be happy to help as well.
     
  4. 12 Nov 2017 at 12:08 AM #44
    Salrav1

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    Hi Johnny, Dave is right,if you use 2nd hand discs from Ebay or a breaker which is what I did ,you can then take them to a machine shop to have them skimmed and just ask them to put a chamfer on either side of the disc when they are skimming them ,it will be easy enough for the machine shop to do as they are refacing the disc any way.Every machine shop loves £ notes and cash jobs and I paid £50 to have mine done which was well worth it as I paid only £100 for my discs.
     
  5. 12 Nov 2017 at 8:54 AM #45
    Johnny1983

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    Dave’s just sent me the pics of the calipers fitted with 360mm discs, my only real concern is if the discs expand due to heat they’ll destroy the caliper, unless you machine them down enough. I’m no metallurgist, I’d be keen to know how much they expand so I could machine the discs down accordingly.

    [​IMG]

    [​IMG]
     
  6. 12 Nov 2017 at 9:16 AM #46
    SNS

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    IMO I would want to allow more than 1mm clearance as you need to account for not only thermal expansion but also for oxidation I.e rust forming on the outer face.
    Great work though! Wonder if the pad would cleanly sweep a 345 csl disc?
     
  7. 12 Nov 2017 at 9:22 AM #47
    mrbean

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    Relieve the caliper slightly
     
  8. 12 Nov 2017 at 12:14 PM #48
    Salrav1

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    Exactly,you could clean up the centre of the caliper as it has plenty of "meat" on it and so you would not really loose any strength.
     
  9. 12 Nov 2017 at 12:23 PM #49
    HARBER07

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    Nicely done. I would also receive the caliber as suggested above as then you can just bolt off the shelf discs straight on. For expansion you would only need about 3mm clearance anyway which is about all I have on my rear M4 setup.
     
  10. 12 Nov 2017 at 12:43 PM #50
    Salrav1

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    Hi Johnny,
    If you did want to machine the discs ,just ask the machinist to take the disc down to just above the cooling vanes on the inside of the disc.From looking at the pictures Dave and I took yesterday this is about 3mm so would give you plenty of clearance.
     
  11. 12 Nov 2017 at 12:47 PM #51
    Salrav1

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    I have a compressor and a die grinder in my garage so it would be easy enough to do so if Dave wants to we could try this on his calipers and then trial fit them on the 360mm discs that are already fitted to my car.
     
  12. 24 Nov 2017 at 3:53 PM #52
    Hopz121

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  13. 24 Nov 2017 at 4:35 PM #53
    HARBER07

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    :thumbsup:

    Would love to know if stock 18's would clear these brakes as well now.
     
  14. 24 Nov 2017 at 5:53 PM #54
    Salrav1

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    Hi Harber,I run csl rep 19s on my car but I do have a spare set of 18s in the garAge and I have tried an 18s on with my 12mm spacers and it is really tight .if you wattsup me or text me on07769683401 I can send you some pictures which you would be more then welcome to post on here.
     
    Last edited: Nov 24, 2017
  15. 24 Nov 2017 at 5:59 PM #55
    Salrav1

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    Hi Ash,nice one and thanks for posting this,it is great to know that the rims fit perfectly .The 260m is a great looking wheel and really suits your car and makes a change from the CSL rims as fitted to my car.
     
  16. 24 Nov 2017 at 6:30 PM #56
    JamesHirst

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    good work lads. keep it up:thumbsup:
     
  17. 24 Nov 2017 at 6:36 PM #57
    Benchmark

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    I gave up on this and decided to go for something that bolts right on as a complete kit and came from another 135i ;-)
     
  18. 24 Nov 2017 at 8:31 PM #58
    Hopz121

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    This does bolt on....... Cheaper and bigger disc's than 135i too :)
     
  19. 24 Nov 2017 at 9:40 PM #59
    Salrav1

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    Yes ,it certainly is just bolt on,no machining is involved at all to make the parts fit.Discs are 360/370mm Bmw E90/92 or M4 they both fit,calipers,pads,brakes hoses are Bmw M4 and the brake pad wear indicator is e46 which are all available from maindealers.The only other component needed to bolt on is a 2mm thick round washer which are so inexpensive that the last pair I had I gave to fellow cutter Dave for nothing.
    A overseas cutter who speaks very little English was able to fit these brakes just with the aid of pictures that I sent him via WhatsApp,it really is that simple to do.
     
  20. 5 Dec 2017 at 9:22 PM #60
    gaza

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    Did anybody manage to fit the rear m4 calipers?
     

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