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Old 11th November 2017, 08:00 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?
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Old 11th November 2017, 10:13 PM   #42
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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?
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).
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Old 11th November 2017, 11:56 PM   #43
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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 Ebaybut 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.
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Old 12th November 2017, 12:08 AM   #44
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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?
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.
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Old 12th November 2017, 08:54 AM   #45
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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.



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Old 12th November 2017, 09:16 AM   #46
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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?
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Old 12th November 2017, 09:22 AM   #47
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Relieve the caliper slightly
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Old 12th November 2017, 12:14 PM   #48
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Relieve the caliper slightly
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.
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Old 12th November 2017, 12:23 PM   #49
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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.
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Old 12th November 2017, 12:43 PM   #50
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Daves just sent me the pics of the calipers fitted with 360mm discs, my only real concern is if the discs expand due to heat theyll destroy the caliper, unless you machine them down enough. Im no metallurgist, Id be keen to know how much they expand so I could machine the discs down accordingly.



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.
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Old 12th November 2017, 12:47 PM   #51
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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.
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.
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Old 24th November 2017, 03:53 PM   #52
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So i went around to see Salrav1 today to trial fit my 260M wheel on his car with the M4 brakes and it fit perfectly with no spacers or rubbing which was great.

Here are some pic's

Untitled by Ashley Hopson, on Flickr

Untitled by Ashley Hopson, on Flickr

Untitled by Ashley Hopson, on Flickr
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Old 24th November 2017, 04:35 PM   #53
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Would love to know if stock 18's would clear these brakes as well now.
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Old 24th November 2017, 05:53 PM   #54
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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 by Salrav1; 24th November 2017 at 05:55 PM.
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Old 24th November 2017, 05:59 PM   #55
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Quote:
Originally Posted by Hopz121 View Post
So i went around to see Salrav1 today to trial fit my 260M wheel on his car with the M4 brakes and it fit perfectly with no spacers or rubbing which was great.

Here are some pic's

Untitled by Ashley Hopson, on Flickr

Untitled by Ashley Hopson, on Flickr

Untitled by Ashley Hopson, on Flickr
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.
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Old 24th November 2017, 06:30 PM   #56
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good work lads. keep it up
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Old 24th November 2017, 06:36 PM   #57
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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 ;-)
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Old 24th November 2017, 08:31 PM   #58
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Quote:
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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 ;-)
This does bolt on....... Cheaper and bigger disc's than 135i too
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Old 24th November 2017, 09:40 PM   #59
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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.
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Old 5th December 2017, 09:22 PM   #60
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Did anybody manage to fit the rear m4 calipers?
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