M5 Front Brakes
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From: Oxfordshire, UK
My Ride: E61 535d Apr 05. UK spec + Media Pack, Luxury Pack & Visibility Pack
, it says to use DOT 4 brake fluid.For more details on braking fluid, see here
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Joined: May 2004
Posts: 2,863
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From: SoCal San Diego
My Ride: 545i Sport
Model Year: 2004
Engine: N62
Originally Posted by dlevi67' post='371504' date='Dec 27 2006, 10:45 AM
DOT 4 is ether-based, so it's hygroscopic (it absorbs humidity), but it's practically uncompressible. Therefore it requires regular replacement (every 12-18 months), but it provides excellent braking feel. DOT 5 is silicone-based, and it's non-hygroscopic, but slightly compressible. It's a "safer" choice, but it does not work as well. Clearly, in an M5 (even if it's only the brakes) you want DOT 4. Quote from the article referred to below: "We won?t even discuss DOT 5 fluids as they are completely unacceptable to the high-performance [braking] enthusiast"
For more details on braking fluid, see here
For more details on braking fluid, see here
.
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Joined: Apr 2006
Posts: 164
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From: Romania-Rm.Valcea
My Ride: bmw 530d,2004,500nm,navi profesional.bi-xenon ,adaptive curve light,active sterring,etc...
Originally Posted by Rizbel' post='371517' date='Dec 27 2006, 02:26 PM
Thanks, great reading, very informative. I should've bled the rear wheels also. I'll replace the fluid when I change to stainless steel lines .
.look awsome,i like that,
that will be my new project,any news to rear brakes?
bravo again
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Joined: May 2004
Posts: 2,863
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From: SoCal San Diego
My Ride: 545i Sport
Model Year: 2004
Engine: N62
Originally Posted by vl20sas' post='371595' date='Dec 27 2006, 03:39 PM
you are a brave man,
look awsome,i like that,
that will be my new project,any news to rear brakes?
bravo again
look awsome,i like that,
that will be my new project,any news to rear brakes?
bravo again
Soon, maybe I'll replace them with those cross drilled rotors similar to the front rotors.
Tomorrow I'll paint all 4 calipers red
. And bleed the rear brakes since I'll be working on them anyway .
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Joined: Apr 2006
Posts: 3,228
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From: fl,USA
My Ride: BMW 2005 X3 3.0
Originally Posted by Rizbel' post='371625' date='Dec 27 2006, 08:26 PM
Thanks man. The front brakes do most of the job of stopping the car so I'll leave the rear brakes stock, for now.
Soon, maybe I'll replace them with those cross drilled rotors similar to the front rotors.
Tomorrow I'll paint all 4 calipers red . And bleed the rear brakes since I'll be working on them anyway .
Soon, maybe I'll replace them with those cross drilled rotors similar to the front rotors.
Tomorrow I'll paint all 4 calipers red
. And bleed the rear brakes since I'll be working on them anyway .Yes red!
I cant wait to see them!
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Joined: May 2004
Posts: 2,863
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From: SoCal San Diego
My Ride: 545i Sport
Model Year: 2004
Engine: N62
Originally Posted by BlaSTiWi' post='371457' date='Dec 27 2006, 08:52 AM
That's what I heard too, but some said it seems to be a bit hard on the rubber brake lines so mostly they recommend a good pair w/ the stainless-steel braided brake lines, that will probably improve brake pedal feedback feel too.
To answer some questions, these are all that I used for the M5 retrofit:
2 Front Rotors
2 Calipers with Brake Pads
PM quad_m for availability/pricing if interested
.