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Thread: E60 M5 front brakes

  1. #26
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    In case anyone was looking for a cheap set of front and rear e60 m5 brakes: http://www.m5board.com/vbulletin/sho...d.php?t=552337

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  2. #27
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    Any negative driving behavior if you install fronts only?
    "Understeer is when you hit the wall with the front of the car, Oversteer is when you hit the wall with the rear of the car, Horsepower is how fast you hit the wall, Torque is how far you take the wall with you."

  3. #28
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    Quote Originally Posted by spitfire980 View Post
    Any negative driving behavior if you install fronts only?
    I haven't been up in the mountains since but just around town and interstate ramps they are amazing. I brake hard into a corner and realize I'm losing too much speed to even get to the corner.
    The rears right now are 750's with OE pads, I can't wait till the e60's and Hawk pads are on. Hopefully this week.
    Trevor
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  4. #29
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    Quote Originally Posted by 007008 View Post
    I haven't been up in the mountains since but just around town and interstate ramps they are amazing. I brake hard into a corner and realize I'm losing too much speed to even get to the corner.
    The rears right now are 750's with OE pads, I can't wait till the e60's and Hawk pads are on. Hopefully this week.
    Careful, if your rears are to strong they will cause ABS to chime in and you will lose on stopping distance))
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  5. #30
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    Is there any booster/master cylinder difference between the V8 and the V12?

    I have a 750 so will pedal travel be any different from your 740?
    "Understeer is when you hit the wall with the front of the car, Oversteer is when you hit the wall with the rear of the car, Horsepower is how fast you hit the wall, Torque is how far you take the wall with you."

  6. #31
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    Quote Originally Posted by spitfire980 View Post
    Is there any booster/master cylinder difference between the V8 and the V12?

    I have a 750 so will pedal travel be any different from your 740?
    Realoem shows the same master cylinder for E39, E38, and E53.
    Trevor
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  7. #32
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    I've taken about 7mm off the brackets. They started at 19mm and are now just short of 12mm thick. 12mm is also the thickness of the ears on the hub, so it should be fine. I've gained a bit more rotor clearance by grinding the inside of the bracket.


    To deal with the bolt size I found some inserts, the bracket hole gets enlarged to a M16x2 thread and then the insert has m10x1.5 thread of the stock e38 bolt.


    Trevor
    01 749i sporty, build 12/00 "Sports Barge",S62
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  8. #33
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    Needs a prettier caliper with that Beaut of a rotor
    2000 740i Sport

  9. #34
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    Quote Originally Posted by cazal740i View Post
    Needs a prettier caliper with that Beaut of a rotor
    Well, until I buy a mini mill and am able to fabricate caliper brackets I just have to live with these.
    Trevor
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  10. #35
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    And under the category of one thing leads to another, I guess I need a different master cylinder. I know the pedal travel is longer, but once you get use to it its not a big deal. I would like it to be as correct as possible.
    I found a site that lists bore sizes and the E38 has a 25.4 bore. E65 has a 26.99 and the E60 also has 26.99.
    Now looking at Realoem and google pics the E60 mc looks completely different to the e38. The e65 looks like and uses the same reservoir as the e38.
    There is a E60 and a E65 at my local pull a part. I'm gonna go get the E65 mc and compare it to the e39 m5 mc that I still have.
    On that part site it shows a second bore size, e38 20.6, e65 20.64 and e60 22.2. Not sure if that's the rear circuit or just a secondary. E60 and E65 share the same rear caliper so that bore size shouldn't matter.
    Trevor
    01 749i sporty, build 12/00 "Sports Barge",S62
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  11. #36
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    Quote Originally Posted by 007008 View Post
    And under the category of one thing leads to another, I guess I need a different master cylinder. I know the pedal travel is longer, but once you get use to it its not a big deal. I would like it to be as correct as possible.
    I found a site that lists bore sizes and the E38 has a 25.4 bore. E65 has a 26.99 and the E60 also has 26.99.
    Now looking at Realoem and google pics the E60 mc looks completely different to the e38. The e65 looks like and uses the same reservoir as the e38.
    There is a E60 and a E65 at my local pull a part. I'm gonna go get the E65 mc and compare it to the e39 m5 mc that I still have.
    On that part site it shows a second bore size, e38 20.6, e65 20.64 and e60 22.2. Not sure if that's the rear circuit or just a secondary. E60 and E65 share the same rear caliper so that bore size shouldn't matter.
    E38/39/60 they all have similar looking rear knuckles, I was wondering if E60 knuckle can be used on E38 control arms
    difference can be in arm length but with adjustable both upper arms it would work
    Last edited by NordmanMg; 04-16-2017 at 11:25 AM.
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  12. #37
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    I took the e39 mc apart (same part as the e38) front bore is 25 and rear bore is 20. So, since the E60 M5 and the e60 545 use the same mc and the e60 545 and the e65 use the same rear caliper, putting a e65 mc on this set up should be the ticket. That is if the e65 mc mounts to the e38 booster. The pedal feel should be just fine. I'm guessing the e60 chassis has more rear bias built in.

    Or, just looked up a Z8. It uses the same booster as the e38 and on the site that list bores it shows to be a 26.99 and the z8 uses the same rear calipers are the e38 so the rear bore should be 20.

    - - - Updated - - -

    A little more looking turned up the Z8 mc is indeed 27 and 20 and it is also the same mc used on Land Rovers
    Trevor
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  13. #38
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    Trevor- isn't there a proportioning/bias valve somewhere in the system for the rear. I have not looked for a while but there used to be one on the drivers side mounted to the frame rail about at the drivers seat. Since the ABS system is on the passenger side it might be over there now, which ever side the brake line runs from front to rear.
    http://i293.photobucket.com/albums/mm71/krallopian/darthSigTest2_zpsn6zkw5id.jpg[/URL][URL="http://www.facebook.com/pages/DFW7-Dallas-Fort-Worth-BMW-7-Series-Club/300942239566"]DFW7 on Facebook/URL]
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  14. #39
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    Quote Originally Posted by TxDarth View Post
    Trevor- isn't there a proportioning/bias valve somewhere in the system for the rear. I have not looked for a while but there used to be one on the drivers side mounted to the frame rail about at the drivers seat. Since the ABS system is on the passenger side it might be over there now, which ever side the brake line runs from front to rear.
    I don't believe so. The MC has 3 ports. 1 comes from the pre-charge pump. 2 goes directly to the DSC (one from the big bore and the other from the smaller bore). Then each wheel gets a line from the DSC. Realoem doesn't show any other valves.
    It's just the bore size that makes the bias.
    Some brakes systems use a 2 pistion mc. Each circuit runs one front and the opposite corner rear. Then you would have a proportioning valve on the rear.


    If you search the BMW Z8 part#34316754880 you'll get very limited and expensive options like $466, The Land Rover part#SJJ000040 gets more options and also lists the
    TRW pn# PMN219 which can be found for $150.
    Trevor
    01 749i sporty, build 12/00 "Sports Barge",S62
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  15. #40
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    I think/believe the master has two ports for safety reasons - if one fails the other should maintain enough to stop at least once. The DSC must do the proportioning for the rear brakes, if it is different than the front, then it might be the same same..........
    http://i293.photobucket.com/albums/mm71/krallopian/darthSigTest2_zpsn6zkw5id.jpg[/URL][URL="http://www.facebook.com/pages/DFW7-Dallas-Fort-Worth-BMW-7-Series-Club/300942239566"]DFW7 on Facebook/URL]
    "The Last Great e38" 2001 i Sport - Born'd on date 1/01 Cosmos/Grey - 32.8K miles - 2 1/2 " Custom Exhaust, Center “X”over , Modified OEM rear bumper, M5 style trunk spoiler, M6 OEM wheels, M3 Steering wheel with working paddle shift & CF trim, Bi-Xenon upgrade, 13mm Rear sway bar added, SS brake lines and bronze bushings, Cross drilled rotors and painted calipers, Akebono pads, Zionsville aluminum radiator & exp. tank with electric fan, Sprint Booster, BluTooth conversion, MKIV Nav., Custom wood cupholder, DUDMD Tune, Orien V2.5 LED Angel Eyes, Evans waterless. Recently added grey faced //M5 Cluster - all gauges functioning. Changed the grey carpet to black and topped off with GG Bailey front/rear mats[/SIZE]

  16. #41
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    There are 6 ports on the DSC V, H, VR, VL, HR, HL. The big bore line goes to V and the small bore goes to H.

    V- Vorderradaufhängung (front suspension)
    H- Hinterradaufhängung (rear suspension)
    VR-front right
    VL-front left
    HR-rear right
    HL-rear left
    Last edited by 007008; 04-16-2017 at 01:48 PM.
    Trevor
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  17. #42
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    Quote Originally Posted by TxDarth View Post
    I think/believe the master has two ports for safety reasons - if one fails the other should maintain enough to stop at least once. The DSC must do the proportioning for the rear brakes, if it is different than the front, then it might be the same same..........
    I agree that is the purpose of the 4 port LF/LR RF/RR setup.
    Trevor
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  18. #43
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    So it does sound like it does the proportioning..............if there is any difference.
    http://i293.photobucket.com/albums/mm71/krallopian/darthSigTest2_zpsn6zkw5id.jpg[/URL][URL="http://www.facebook.com/pages/DFW7-Dallas-Fort-Worth-BMW-7-Series-Club/300942239566"]DFW7 on Facebook/URL]
    "The Last Great e38" 2001 i Sport - Born'd on date 1/01 Cosmos/Grey - 32.8K miles - 2 1/2 " Custom Exhaust, Center “X”over , Modified OEM rear bumper, M5 style trunk spoiler, M6 OEM wheels, M3 Steering wheel with working paddle shift & CF trim, Bi-Xenon upgrade, 13mm Rear sway bar added, SS brake lines and bronze bushings, Cross drilled rotors and painted calipers, Akebono pads, Zionsville aluminum radiator & exp. tank with electric fan, Sprint Booster, BluTooth conversion, MKIV Nav., Custom wood cupholder, DUDMD Tune, Orien V2.5 LED Angel Eyes, Evans waterless. Recently added grey faced //M5 Cluster - all gauges functioning. Changed the grey carpet to black and topped off with GG Bailey front/rear mats[/SIZE]

  19. #44
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    The Z8 master cylinder came the other day and I put it in today. Changing the MC is a real pain. There isn't enough room to pull the MC with the booster bolted to the wall and there isn't room to remove the booster completely. I guess the plastic cowling has to come out also. With the booster loose and tilted up I was able to get it back together. A test drive around the neighborhood the pedal is about an inch higher, so I guess mission accomplished.


    Only outward difference between the E38 and Z8 MC is the port threads. m10x1 and m12x1

    With this adapter available at Oreilly's

    The stock line fits fine. The Z8 is 27mm

    The E38 MC is 25mm

    The second bore is 20mm
    Trevor
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  20. #45
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    Quote Originally Posted by 007008 View Post
    There are 6 ports on the DSC V, H, VR, VL, HR, HL. The big bore line goes to V and the small bore goes to H.

    V- Vorderradaufhängung (front suspension)
    H- Hinterradaufhängung (rear suspension)
    VR-front right
    VL-front left
    HR-rear right
    HL-rear left
    Always wanted to know what those ment, I'll remember this
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  21. #46
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    Strictly genius Trevor. You r the king of part # cross referencing


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  22. #47
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    Quote Originally Posted by cazal740i View Post
    Strictly genius Trevor. You r the king of part # cross referencing


    Sent from my SM-N910P using Tapatalk
    its something I learned in the watercooled VW world. German makers are good about reusing certain items and leaving dimensions and locations the same. For instance... The Corrado VR6 is called a mk2.5 chassis. It's based on the mk2 Golf but has the suspension and drivetrain from the future mk3 chassis.
    Trevor
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  23. #48
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  24. #49
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    Got myself all 4 calipers and rotors for $470 on ebay!
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  25. #50
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    Is it necessary to actually do the rears? Would I be ok doing the fronts & leaving 750 ones on the rears?


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