|
|
|
01-13-2008, 12:43 AM | #1 |
Private First Class
23
Rep 143
Posts |
6piston brake on 135i only?
Does not the M5 , M6, or even M3 have 6 piston?
__________________
AlpineWhite (deciding)
Black Leatherette (for sure) Glaciersilver or Highglossblack trim Sport Package Active Steering Manual Transmission :roundel: |
01-13-2008, 01:38 AM | #2 |
Lieutenant
18
Rep 524
Posts |
No, the 135i is the only one. May be the start of a new trend (hopefully).
__________________
1973 Porsche Carrera RS 2.7 Carbon Fiber (240hp & 1,890 lbs)
|
Appreciate
0
|
01-13-2008, 04:30 PM | #4 |
Lieutenant Colonel
28
Rep 1,938
Posts |
They're made by Brembo, so possibly this is the first example of collaboration between the two companies. Ive heard they will make the Brembo 6-piston kit available for the 3-series guys too.
|
Appreciate
0
|
01-13-2008, 04:34 PM | #5 |
Private First Class
13
Rep 127
Posts |
Could someone explain to us newbies what is the advantage of 6-piston calipers over lesser ones? Is it more fade resistance, better 'feel', better heat dissipation, or somesuch?
It seems most disk calipers can clamp on hard enough to lock the wheel, so it can't be 'pure stopping power'. |
Appreciate
0
|
01-13-2008, 04:53 PM | #6 |
Not a Newbie
1
Rep 173
Posts |
The big advantage is the caliper is fixed to the knuckle, not floating like all over Bimmer brake calipers. This offers a fantastic firm pedal with excellent feel; superior feel to a floating caliper. They're also lighter!
__________________
[SIGPIC][/SIGPIC]
|
Appreciate
0
|
01-13-2008, 05:07 PM | #7 |
Lieutenant
18
Rep 524
Posts |
I'm still not convinced that there is enough rotor for hard track use (but I love 6-piston calipers).
__________________
1973 Porsche Carrera RS 2.7 Carbon Fiber (240hp & 1,890 lbs)
|
Appreciate
0
|
01-13-2008, 05:22 PM | #8 |
Not a Newbie
1
Rep 173
Posts |
The rotor is 338x26mm, which is probably fine for HPDE's where you're doing 20 minute sessions. It will probably be a while before someone releases a decent brake pad that will last that long though!
__________________
[SIGPIC][/SIGPIC]
|
Appreciate
0
|
01-13-2008, 05:23 PM | #9 | |
Major General
903
Rep 9,034
Posts |
Quote:
As for any real advantage of 2 pistons vs. 8 piston's, it doesn't really matter. It really depends on the piston surface area. The main advantage of a big brake kit, is better heat handling and dissipation. |
|
Appreciate
0
|
01-14-2008, 06:04 PM | #10 |
Banned
583
Rep 1,170
Posts
Drives: M2 Competition, E30 M3 DTM
Join Date: Apr 2006
Location: Country where the taxes are too high!!
|
i race with a bmw 130i cup we use 4 piston brembo calipers on original 330mm discs with carbon metallic 01 compound pads no problem discs last 4 race weekends.
135i discs are even bigger. Just use good race pads on track. |
Appreciate
0
|
01-15-2008, 03:32 AM | #11 |
First Lieutenant
14
Rep 333
Posts |
Hey Advevo, I see you still list yourself as driving a 130i. When are you getting into your 135i?
__________________
"But don't be surprised if you completely forget about your passengers when driving this car. You will be mesmerised by the feel of the fat, well-weighted steering wheel in your hands, the sound from the specially tuned exhaust, and the in-gear acceleration that will have you grinning like a loon...." TopCar magazine (SA)
|
Appreciate
0
|
01-15-2008, 04:26 AM | #12 |
Banned
583
Rep 1,170
Posts
Drives: M2 Competition, E30 M3 DTM
Join Date: Apr 2006
Location: Country where the taxes are too high!!
|
I still have my 130i 3 doors next to my 135i the wifey drives de 130i. Tommorow my registration for the 135i will be there. So one more day and then drive.
|
Appreciate
0
|
01-15-2008, 04:36 AM | #13 | |
First Lieutenant
14
Rep 333
Posts |
Quote:
I really don't know how you held out for so long, knowing that the car was there, seeing it, sitting in it but not driving it. I know I would not have been able to hold out for 3 weeks as you have, but then again you did get to go on an extended test drive. Me, I have to rely on feedback over the net and look at pictures as there are no 1er coupes here to even look at nevermind drive.
__________________
"But don't be surprised if you completely forget about your passengers when driving this car. You will be mesmerised by the feel of the fat, well-weighted steering wheel in your hands, the sound from the specially tuned exhaust, and the in-gear acceleration that will have you grinning like a loon...." TopCar magazine (SA)
|
|
Appreciate
0
|
01-15-2008, 06:42 AM | #14 | |
Colonel
842
Rep 2,411
Posts |
Quote:
I think its going to take a serious pad on there to withstand hard lapping. Even then, rotor or pad life won't be the same a with a BBK of that diameter, but with a wider rotor. Not complaining, but these aren't quite the brakes they appear to be at first glance. |
|
Appreciate
0
|
01-15-2008, 11:08 AM | #15 |
Private First Class
4
Rep 118
Posts |
As been stated the real advantage is in having fixed calipers and not floating calipers. This can be achieved without 6 pistons and has been done for a long time with 4. Besides for the "cool" factor, the only advantage to 6 pots is more even distribution of the brake force to the pad leading to more even pad wear.
If the brakes can lock up the tries they are adequate for the vehicle. As long as they remain fade free. |
Appreciate
0
|
01-15-2008, 02:51 PM | #16 |
New Member
0
Rep 29
Posts |
Another advantage of ditching the floating caliper is no more uneven pad wear! Hooray. I'm so sick and tired of replacing the front brake pads on my MINI. Outer pad is at 70% or more, while the inner pad is closer to 30.
|
Appreciate
0
|
01-15-2008, 03:04 PM | #17 |
Lieutenant Colonel
326
Rep 1,805
Posts |
Apparently BMW is only putting the 6-piston calipers on the 135i because of fitting issues with the single caliper floating system.
__________________
-Nick
2018 BMW 440i - M Sport, Exec Glacier Silver Metallic/Coral Red Dakota Retired: '00 323i, '06 325Ci, '09 135i, '06 Z4M Roadster, '93 525i, '76 2002, '14 X1, '14 M235i, '16 X4, '16 435i |
Appreciate
0
|
01-15-2008, 03:31 PM | #18 |
Colonel
842
Rep 2,411
Posts |
Why aren't you pulling off the useless tab and swapping sides? You should be able to get a full life cycle out of them doing this.
|
Appreciate
0
|
01-15-2008, 03:41 PM | #19 |
New Member
0
Rep 29
Posts |
It's so cheap to just buy new pads rather than swapping tabs and putting them back in place, that I just switch them out to all new stuff. It's not the money, it's just the wastefulness and the hassle of changing them out.
|
Appreciate
0
|
01-15-2008, 04:10 PM | #20 |
Freude am Fahren
17
Rep 388
Posts |
oh well. Their engineering problem is our gain
__________________
"Oversteer is best because you don't see the tree that kills you" -- Richard Hammond |
Appreciate
0
|
01-16-2008, 12:26 AM | #21 |
Major General
903
Rep 9,034
Posts |
What fitting issues?
And BMW has signed a deal with Brembo for future brakes, so we may be seeing more fixed caliper, multi-piston calipers in the future. |
Appreciate
0
|
01-19-2008, 05:38 PM | #22 |
Major
84
Rep 1,075
Posts |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|