03-28-2016, 03:21 PM | #45 | |
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03-28-2016, 10:12 PM | #46 |
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That's good to hear. I just may end up pulling the trigger on those. Thanks for the update.
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04-07-2016, 01:37 PM | #48 |
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05-17-2016, 05:25 PM | #50 | |
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Drives: Portimao Blue 2022 M240iXdrive
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Location: San Antonio, Texas
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05-18-2016, 12:43 AM | #51 |
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Drilled rotors are more susceptible to cracking than dimpled rotors.
M2 380mm front rotors won't fit, even though the calipers are the same. m2/3/4 mounts on to hub carrier are different to accommodate 380mm rotor. |
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05-18-2016, 11:20 AM | #52 |
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Slotted, drilled or dimpled rotors are mostly for the show, a wow factor.
As far as function is concerned plain rotors usually provide better braking than slotted and especially dimpled or drilled. Drilled rotors are more prone to crack. More noise, too. |
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05-19-2016, 05:19 AM | #53 | |
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Before - stock After - MPBBK Fitted MPBBK with M4 sport pads, steel hoses and DOT5.1 BF and the stopping power is better for longer in terms of fade resistance etc
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05-19-2016, 12:38 PM | #54 | |
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http://papers.sae.org/2006-01-0691/ Not the most definitive study on the subject, but at least there's some data in there to argue about. Oh, and the correct answer is, it's complicated. Cross drilling may decrease or increase brake performance depending on the brake design and intended vehicle use. |
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07-18-2016, 11:00 PM | #55 |
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There seems to be a lot of confusion going on regarding the available braking systems for our cars.
This happens because the "2NH M Sport Brakes" option when ordering the car means different braking systems on different cars and markets. Do not mix up "337 M Sport Package" with "2NH M Sport Brakes". System 1: M Sport with 340mm front Front: -> 340x30 one-piece plain front discs (PN 34116792223, same as standard 335i) -> blue fixed 4-piston calipers (PN 34116799465) Rear: -> 345x24 one-piece plain rear discs (PN 34206797605) -> blue fixed 2-piston calipers (PN 34216799461) Fitted on: F20 EUR: all vehicles equipped with "2NH M Sport Brakes" and as standard on M135i/M140i/M235i/M240i F20 USA: as standard on M235i/M240i F30 EUR: all 14i-20i vehicles equipped with "2NH M Sport Brakes" F30 USA: newest 28i/30i vehicles equipped with "2NH M Sport Brakes" System 2: M Sport with 370mm front Front: -> 370x30 one-piece plain front discs (PN 34106797606) -> blue fixed 4 piston calipers (PN 34116799469) Rear: -> 345x24 one piece plain rear discs (PN 34206797607, seems to be the same as system 1) -> blue fixed 2 piston calipers (PN 34216799461) Fitted on: F20 worldwide: not available F30 EUR: all 28i-40i vehicles equipped with "2NH M Sport Brakes" F30 USA: newest 28i/30i vehicles equipped with "2NH M Sport Brakes" System 3: M Performance with 370mm front Front: -> 370x30 one-piece slotted and drilled front discs -> yellow, orange or red fixed 4 piston calipers Rear: -> 345x24 one piece slotted and drilled rear discs -> yellow, orange or red fixed 2 piston calipers Worldwide: only available as accessory Front and rear discs are the same as system 2 (same weight as well), except for the fact that they are slotted and drilled. Front and rear calipers are same as system 2 (same weight as well), except for the color. F8x Braking System The M2/M3/M4 (without ceramics) use the same calipers as system 2, however, they use bigger and much lighter two-piece drilled discs. (380x30 at the front and 370x24 at the rear). They are able to use a bigger disk with the same caliper because they use a different carrier - the distance between the middle of the axle to the mounting point for the calipers is bigger. These disks are not plug and play in a standard F20/F30 car. Final words OP sees a significant difference between his old factory M Sport to his new M Performance brakes because he had the small discs. Some people see no difference when upgrading to M Performance because their cars had the big discs to begin with. Last edited by klil; 02-13-2017 at 12:27 AM.. |
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04-26-2018, 10:28 AM | #56 |
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i just asked my local BMW dealer about the MPBBK and to replace the rear protection plates you need to remove the wheel bearing and in ding so damges it and is not reusable.
can any one chime in on replaing the rear protection plates with this kit - did you do it , did you need new hubs/bearings? if the rear discs and calipers are the same, why replace the protection plates then?
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05-02-2018, 07:34 PM | #57 | |
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