Front Brake Caliper Bolt On Piece

Blacky · 06-09-2008, 10:04 PM

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

MattD · 06-10-2008, 05:49 AM

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

Blacky · 06-10-2008, 07:00 AM

THanks

Lester · 06-10-2008, 07:25 AM

Quote:

Originally Posted by Blacky

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:

larryn · 06-10-2008, 07:40 AM

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:

ikos · 06-14-2008, 01:07 PM

I don't think that the brakes are made by Brembo!!

does anyone actually know who they're made by??

Red135 · 06-14-2008, 01:33 PM

They are made by Brembo.

Terp1 · 06-14-2008, 01:44 PM

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.

m3bs · 06-14-2008, 08:30 PM

I'm tempted to remove them and see what happens. My guess would be to lower resonant frequency for noise reduction.

blklacker · 06-14-2008, 11:16 PM

Quote:

Originally Posted by Lester

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

adc · 06-16-2008, 11:05 AM

In the meantime, can someone please post even a rudimentary DYI for changing pads?

RobLS · 06-16-2008, 11:48 AM

Maybe it just gives the breaks a bigger appearance. To me they look pretty good, just as good as w/o them on.

ElTonillo · 06-02-2015, 02:36 AM

Did anybody find out whta those pieces are for?

Solo_M_Tech · 06-02-2015, 02:50 AM

I am interested too. If they are not required, you could save a pound or so on each wheel in unsprung weight.

Elsabor67 · 06-02-2015, 04:49 AM

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.

e82passion · 06-02-2015, 05:08 AM

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?

Solo_M_Tech · 06-02-2015, 05:25 AM

Quote:

Originally Posted by Elsabor67

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!

slonik · 06-02-2015, 05:32 PM

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.

ElTonillo · 06-02-2015, 08:37 PM

Quote:

Originally Posted by Elsabor67

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?

e82passion · 06-02-2015, 09:57 PM

Quote:

Originally Posted by slonik

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.

Elsabor67 · 06-03-2015, 01:30 AM

Quote:

Originally Posted by ElTonillo

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.

06-09-2008, 10:04 PM	#1
Blacky Lieutenant 14 Rep 472 Posts Drives: Join Date: Mar 2006 iTrader: (0)	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 Attached Images
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06-10-2008, 05:49 AM	#2
MattD Legend 12 Rep 158 Posts Drives: Join Date: Apr 2008 iTrader: (0)	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, 07:00 AM	#3
Blacky Lieutenant 14 Rep 472 Posts Drives: Join Date: Mar 2006 iTrader: (0)	THanks
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06-10-2008, 07:40 AM	#5
larryn Lieutenant General 2146 Rep 10,176 Posts Drives: '97 332ti, '21 X5 45e, '16 GT4 Join Date: May 2005 Location: Seattle iTrader: (2)	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, 01:07 PM	#6
ikos Enlisted Member 10 Rep 32 Posts Drives: subaru wrx sti Join Date: Aug 2008 Location: toronto, ontario iTrader: (0)	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, 01:33 PM	#7
Red135 La Flama Blanca 27 Rep 1,545 Posts Drives: 1-series Join Date: Mar 2008 Location: Abq, NM iTrader: (1)	They are made by Brembo. Attached Images __________________ AMS, Berk Technology, aFe, ER
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06-14-2008, 01:44 PM	#8
Terp1 Private First Class 23 Rep 193 Posts Drives: '01 BMW 325Ci Join Date: Apr 2008 Location: Dayton, OH iTrader: (0)	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, 08:30 PM	#9
m3bs Captain 62 Rep 657 Posts Drives: 95 S54 M3, X5, GT4, GR Corolla Join Date: Feb 2008 Location: North Augusta, SC iTrader: (1)	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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06-16-2008, 11:05 AM	#11
adc Major General 2750 Rep 6,759 Posts Drives: 2018 F80 M3 ED Join Date: Sep 2006 Location: MD/DC iTrader: (12)	In the meantime, can someone please post even a rudimentary DYI for changing pads? __________________ 2018 F80 Santorini 2019 Z4 3.0i 2022 X2 M35i
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06-16-2008, 11:48 AM	#12
RobLS Major 29 Rep 1,193 Posts Drives: M3 Coupe Join Date: Aug 2007 Location: Near Perpetual Rain iTrader: (0)	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, 02:36 AM	#13
ElTonillo Private 2 Rep 92 Posts Drives: 2011 135i Join Date: Aug 2013 Location: San Francisco iTrader: (4)	Did anybody find out whta those pieces are for?
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06-02-2015, 02:50 AM	#14
Solo_M_Tech Brigadier General 1688 Rep 3,140 Posts Drives: 2014 M5 6MT Join Date: Nov 2013 Location: Massachusetts iTrader: (7) Garage List 2014 BMW M5 [0.00]	I am interested too. If they are not required, you could save a pound or so on each wheel in unsprung weight. __________________ 2014 M5 6MT
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06-02-2015, 04:49 AM	#15
Elsabor67 aiming for 450..... 303 Rep 2,910 Posts Drives: Totaled :-( Join Date: Feb 2009 Location: Louisiana iTrader: (28) Garage List 2009 135i [10.00]	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. __________________ Quote from Ezeedee regarding car mods: "you're only done when you sell the car "
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06-02-2015, 05:08 AM	#16
e82passion Enlisted Member 2 Rep 35 Posts Drives: 2008 M3 MT Coupe Join Date: May 2014 Location: Hong Kong iTrader: (0)	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? __________________ 2008 135i 6MT \| Alpine White \| Coral Red Leather \| Sport \| BMW Performance Brakes \| BMW Performance CF Spoiler\| BMW Performance CF Rear Diffuser \| BMW Performance CF Mirrors \| MTech CF Front Lip \| Blackline LCI Tail Lights \| Black Kidney Grilles \| 18" BMW Performance 269 \| Michelin PSS \| Bilstein PSS10 \| BMW Short-Shifter \| BMW Performance Steering Wheel \| BMW Performance Exhaust \| JB4\| //M3 Front & Rear Control Arms\| ECS Trailing Arms
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