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E28 M5 Discussion 1984-1988


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Old 3rd May 2000, 19:33   #1
GeorgeK
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Yes they are a few methods to improve braking on the E28 M5. The first is to put discs from a 750 iL at the front. They have a much better cooling pattern. They also are thinner (2mm), so beware with worn pads.
There is another way to improve braking, and this is to put the rear discs and calipers from the E34 540i at the rear. It highly inproves rear braking, modifies the bias somewhat and eases the task of the front brakes.
There is a load of imformation about this subject at this adress: http://www.gis.nsw.gov.au/staff/rnot...radeE28M5.html
Hope this helps, George
PS, you must be lucky to own this car.I can't find a suitable one here in Switzerland...
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Old 4th May 2000, 00:48   #2
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E28 Brake Conversion

Does Anyone know if there is a straight forward conversion for front brakes on E28, 1988 M5? I have heard that the 850 CSI front brake are a straight bolt on application. Any help is appreciated!
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Old 4th May 2000, 17:45   #3
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I agree the E34 540 rotors and calipers will make a huge difference for street use. I upgraded to this format a few years ago when I was using the car as a daily driver. You may not even need to upgrade the calipers, since the 540 rotors alone make a good bit of difference. For the past two years I have used the car as a track racer and I now have Movit Porsche GT2 brakes on the car. They are unbelievable but also very expensive, but unlike most of the "pure" racing brakes from Alcorn and the other types don't need to be rebuilt every so often and the Movit brakes require little or no maintenance during the course of the year.

Good Luck,

Jon K.

96 750il
95 F355
88 M5
62 Fleetwood
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Old 4th May 2000, 18:34   #4
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especially the US guys can use brakes from chevy(corvette) the bolt pattern is the same as bmw, only thing to do is make the center hole of the disc ok for the bmw axle and weld a connection for the caliper !
i did it a few years ago the other way, i putted brakes from a 528 on a chevy impalaSS from 1965, it works perfect .
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Old 4th May 2000, 19:12   #5
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GeorgeK,

In the recent German magazine AMS, there is an E28 ///M5 with the first paint offered for sale. No price is mentioned, just a phone number.

++49-172-6067355

I did not have the time to call yet, but maybe the car is still available.

With best regards,

Raymond
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Old 4th May 2000, 19:21   #6
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I have just called the man who offered the E28 ///M5.

Some details,

1986 E28 ///M5 with 159000km (100000miles)mostly Autobahn driven. No leaks on the engine, BMW dealer maintained. Acident free.

Car is red with shadowline with full leather interior and is still available.

Asking price: DM14900 (US$7000)

With best regards,

Raymond


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Old 4th May 2000, 19:48   #7
GeorgeK
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Thanks a thousand times, Raymond.
It's the exact reason I take part in these forums, people helping each other.
I called for the car, it seems interesting.
Regards, GeorgeK
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Old 18th May 2000, 15:37   #8
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Tom,
I have no idea. The only M5 E28 I saw only had the front brake conversion.
For the rear, I would check if the disc dimensions match (diameter, thickness parking drum). BUT, The main point was to increase clamping force, so putting better discs will not increase that part of the equation, as thermal restrictions do not seem to be the problem in that case.
Hope this helps, George
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Old 19th May 2000, 00:23   #9
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Quote:
Originally posted by GeorgeK:
Yes they are a few methods to improve braking on the E28 M5. The first is to put discs from a 750 iL at the front. They have a much better cooling pattern. They also are thinner (2mm), so beware with worn pads.
There is another way to improve braking, and this is to put the rear discs and calipers from the E34 540i at the rear. It highly inproves rear braking, modifies the bias somewhat and eases the task of the front brakes.
There is a load of imformation about this subject at this adress: http://www.gis.nsw.gov.au/staff/rnott/bmw/BMWText/technical/BrakeRotorUpgradeE28M5.html
Hope this helps, George
PS, you must be lucky to own this car.I can't find a suitable one here in Switzerland...
George,

Thank you for your response. I have replaced the front rotors with the 750i rotors and have had no warpage yet! Do you know if the E34 540i rear rotors and pads will work with my existing calipers? This would obviously be a very simple and straightforward improvement. Any info would be greatly appreciated.

Thanks again, Tom.
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