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      06-09-2008, 11:04 PM   #1
Blacky
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Front Brake Caliper Bolt On Piece

Hey
Does anyone know what the 2 bolt on piece at each end of the front calipers is for?
This looks very different from the typical Brembo OEM calipers i.e. Porsche or similar and looks out of place (if I could say ugly).
Does it have some function?
Thanks
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      06-10-2008, 06:49 AM   #2
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Check this thread

http://www.1addicts.com/forums/showthread.php?t=8433

No one seemed to have a real idea of what they could be
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      06-10-2008, 08:00 AM   #3
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THanks
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      06-10-2008, 08:25 AM   #4
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Quote:
Originally Posted by Blacky View Post
Hey
Does anyone know what the 2 bolt on piece at each end of the front calipers is for?
This looks very different from the typical Brembo OEM calipers i.e. Porsche or similar and looks out of place (if I could say ugly).
Does it have some function?
Thanks
I hadn't even noticed it until you mentiond it - Thanks!

It is probably a brake dust sprayer, to cover the wheels evely....:thumbup:
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      06-10-2008, 08:40 AM   #5
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Yep, I posted that other thread about a month ago. The Sedona Red 135i in all of the brochures shows the same front caliper, except they do not have those ears bolted on them. :iono:
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      06-14-2008, 02:07 PM   #6
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I don't think that the brakes are made by Brembo!!

does anyone actually know who they're made by??
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      06-14-2008, 02:33 PM   #7
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They are made by Brembo.
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      06-14-2008, 02:44 PM   #8
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The OP question has yet to be answered. Aren't there any tech's that can answer this? Maybe Dan can pass this on to the tech's at his dealership. If memory serves me those pieces are also on the BMW Performance BBK.
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      06-14-2008, 09:30 PM   #9
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I'm tempted to remove them and see what happens. My guess would be to lower resonant frequency for noise reduction.
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      06-15-2008, 12:16 AM   #10
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Quote:
Originally Posted by Lester View Post
I hadn't even noticed it until you mentiond it - Thanks!

It is probably a brake dust sprayer, to cover the wheels evely....:thumbup:

LOL
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      06-16-2008, 12:05 PM   #11
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In the meantime, can someone please post even a rudimentary DYI for changing pads?
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      06-16-2008, 12:48 PM   #12
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Maybe it just gives the breaks a bigger appearance. To me they look pretty good, just as good as w/o them on.
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      06-02-2015, 03:36 AM   #13
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Did anybody find out whta those pieces are for?
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      06-02-2015, 03:50 AM   #14
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I am interested too. If they are not required, you could save a pound or so on each wheel in unsprung weight.
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      06-02-2015, 05:49 AM   #15
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Talk about a thread revival from 8 years back......LMAO!!!!!!!!!!!!!!!!!!!

Anyways, those 2 pieces on the ends of the front caliper are weights for harmonic balancing of the caliper. If you remove them they will cause vibration in the front of the suspension due to the caliper being unbalanced.

I found this out 2 ways. It was informed to me by a BMW tech and I also tried it myself. Never doing that again.
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      06-02-2015, 06:08 AM   #16
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The caliper is unbalanced? Is this a design flaw? I've never seen these on other Brembos. Is this to say that other Brembo calipers are balanced?
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      06-02-2015, 06:25 AM   #17
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Quote:
Originally Posted by Elsabor67 View Post
Talk about a thread revival from 8 years back......LMAO!!!!!!!!!!!!!!!!!!!

Anyways, those 2 pieces on the ends of the front caliper are weights for harmonic balancing of the caliper. If you remove them they will cause vibration in the front of the suspension due to the caliper being unbalanced.

I found this out 2 ways. It was informed to me by a BMW tech and I also tried it myself. Never doing that again.
Wow i didn't even check the dates! hahahah!
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      06-02-2015, 06:32 PM   #18
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Quote:
The caliper is unbalanced? Is this a design flaw? I've never seen these on other Brembos. Is this to say that other Brembo calipers are balanced?
try to check vag 8 pot brembos, which fits on rs4/5/6 phaeton etc.
on some models this caliper has similar balancers, like on this 135 calipers.

i think it needs only on some specific configurations, where caliper can make resonance.
i've fitted this bmw 135 brembo caliper on 365mm rotor (another car), and all works excellent without this balancing.
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      06-02-2015, 09:37 PM   #19
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Quote:
Originally Posted by Elsabor67 View Post
Talk about a thread revival from 8 years back......LMAO!!!!!!!!!!!!!!!!!!!

Anyways, those 2 pieces on the ends of the front caliper are weights for harmonic balancing of the caliper. If you remove them they will cause vibration in the front of the suspension due to the caliper being unbalanced.

I found this out 2 ways. It was informed to me by a BMW tech and I also tried it myself. Never doing that again.
haha yeah I noticed it was from a while back but I couldn't find any info about it, but thanks for the comment, did you feel the vibration? or what did you feel after taking them off?

Last edited by ElTonillo; 06-03-2015 at 12:50 AM.
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      06-02-2015, 10:57 PM   #20
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Quote:
Originally Posted by slonik View Post
try to check vag 8 pot brembos, which fits on rs4/5/6 phaeton etc.
on some models this caliper has similar balancers, like on this 135 calipers.

i think it needs only on some specific configurations, where caliper can make resonance.
i've fitted this bmw 135 brembo caliper on 365mm rotor (another car), and all works excellent without this balancing.
Thanks for the explanation. Makes sense as I've heard a story about a Porsche with aftermarket brembos which hum at highspeeds.
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      06-03-2015, 02:30 AM   #21
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Quote:
Originally Posted by ElTonillo View Post
haha yeah I noticed it was from a while back but I couldn't find any info about it, but thanks for the comment, did you feel the vibration? or what did you feel after taking them off?
It was a humming vibration that when you apply the brakes you will feel that vibration transfer to the steering wheel. Feels like the front wheels are riding rough.
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