I re-weighed the OEM brakes - M3 Forum 2010 2009 BMW M3 2008 BMW M3 BMW E90 M3 E92

badfish · 09-14-2008, 05:28 AM

I was moving my OEM brakes when I was able to find my Pelouze postal scale. So I figured I what the heck, why not weigh them to verify the numbers that OC kid came up with. Well, I was in for a bit of a surprise. The numbers I came up with were quite a bit less than what was previously thought.

Front caliper previously thought to be 15.2 pounds was actually 14.5 pounds with pads and OEM rubber line attached.

Rear caliper previously measured at 12.1 pounds I measured it at 11 pounds with pads and OEM rubber line.

Front rotor previously measured at 26.6 pounds I measured at 22.7 pounds.

Rear rotor previously measured at 22.8 pounds I measured at 19.7 pounds.

So then the question I had was just how accurate is the little Pelouze scale. I grabbed a 25 pound dumbbell to find out. It weighed in at exactly 25 pounds.

So these numbers are pretty accurate and might make the stock brake guys happier.

I believe OC kid used a bathroom scale to weigh the brakes before so that could be the reason for the difference.

schnell325 · 09-14-2008, 12:19 PM

Very nice post. Thank you.

ArsenalFC · 10-02-2008, 06:51 PM

So is there an advantage in weight over the Brembos?

!Xoible · 10-02-2008, 06:53 PM

why are you weighing toyota breaks?

badfish · 10-02-2008, 08:18 PM

Quote:

Originally Posted by Arsenal

So is there an advantage in weight over the Brembos?

Brembos would be lighter but I'm not sure how much. Someone should take an accurate measurement of the Brembo kit to be sure.

Radiation Joe · 10-02-2008, 10:58 PM

Quote:

Originally Posted by ///Mantis

why are you weighing toyota breaks?

Mantis!
One of these days ....
To da moon!

lucid · 10-02-2008, 11:26 PM

What makes you think that dumbbell indeed weighs 25lbs?

Sorry I couldn't resist, but you get my drift.

Also, global ban on OC Kid for using bathroom scale!?

Bob@BPS · 10-04-2008, 03:00 AM

Quote:

Originally Posted by Arsenal

So is there an advantage in weight over the Brembos?

Even if there was no weight advantage, you still gained superior heat dissipation and stopping power.

ArsenalFC · 10-14-2008, 03:23 PM

Quote:

Originally Posted by Bob@BPS

Even if there was no weight advantage, you still gained superior heat dissipation and stopping power.

True when the brakes get hot, when they are cold the stopping power isnt all that great. Also I have noticed noise when the brakes are cold. Have you had these problems?

OC kid · 10-14-2008, 08:33 PM

Quote:

Originally Posted by badfish

I believe OC kid used a bathroom scale to weigh the brakes before so that could be the reason for the difference.

Quote:

Originally Posted by lucid

Also, global ban on OC Kid for using bathroom scale!?

My testing was never purported to be anything more than what I said it was; unofficial. I did what I could with what I had at the time, my figures were averages taken from a plain-old bathroom scale. I think I even posted pictures with the brakes on the crappy scale...

lucid: You didn't have a problem with my less-than scientific scale back in May, or whenever it was, when I weighed the brakes...

oh well...

good-bye cruel world...

lucid · 10-14-2008, 08:36 PM

Quote:

Originally Posted by OC kid

My testing was never purported to be anything more than what I said it was; unofficial. I did what I could with what I had at the time, my figures were averages taken from a plain-old bathroom scale. I think I even posted pictures with the brakes on the crappy scale...

lucid: You didn't have a problem with my less-than scientific scale back in May, or whenever it was, when I weighed the brakes...

oh well...

good-bye cruel world...

Oh, come on OC, I was pulling your leg man! I was being sarcastic.

Your numbers are not that off, and they served us well as a reasonable estimate.

Now, please don't blow your head off man.

How are those Brembo's working out for you btw?

lucid · 10-15-2008, 08:41 AM

Badfish, do you have accurate weight specs on the Brembo kit in your car? I want to update the numbers here with the numbers you posted on this thread:

http://www.m3post.com/forums/showthr...ngs+benchmarks

But I'll stick to OC's numbers since whatever error his scale might have had is at least applies to both the stock and the Brembo systems, so the weight difference should be relatively accurate. If I use your numbers, I can't use OC's numbers for the Brembos.

Thanks for taking the time weigh these things guys.

badfish · 10-15-2008, 11:56 AM

Quote:

Originally Posted by lucid

Badfish, do you have accurate weight specs on the Brembo kit in your car? I want to update the numbers here with the numbers you posted on this thread:

http://www.m3post.com/forums/showthr...ngs+benchmarks

I have the Stoptech kit and they weighed the brakes on a scale much more accurate and expensive than the one I have. The figures were given in hundredths and even thousandths of a pound.

Quote:

But I'll stick to OC's numbers since whatever error his scale might have had is at least applies to both the stock and the Brembo systems, so the weight difference should be relatively accurate.

I don't have the numbers for the Brembo kit but I would be willing to be that they do.

lucid · 10-16-2008, 08:11 AM

Quote:

Originally Posted by badfish

I have the Stoptech kit and they weighed the brakes on a scale much more accurate and expensive than the one I have. The figures were given in hundredths and even thousandths of a pound.

Thanks for the reference. I forgot about that thread.

m_parade · 10-16-2008, 02:42 PM

Brembo performed extremely well under excessive amount of hard braking. I was very impressed with them. Take a picture of the Brembo BBK and a pic of stock brakes then compare with them side by side, you guys will know why.

09-14-2008, 05:28 AM	#1
badfish Captain Drives: E92 AW M3 Join Date: Feb 2008 Location: SoCal Posts: 962 iTrader: (0) View badfish's Garage	I re-weighed the OEM brakes I was moving my OEM brakes when I was able to find my Pelouze postal scale. So I figured I what the heck, why not weigh them to verify the numbers that OC kid came up with. Well, I was in for a bit of a surprise. The numbers I came up with were quite a bit less than what was previously thought. Front caliper previously thought to be 15.2 pounds was actually 14.5 pounds with pads and OEM rubber line attached. Rear caliper previously measured at 12.1 pounds I measured it at 11 pounds with pads and OEM rubber line. Front rotor previously measured at 26.6 pounds I measured at 22.7 pounds. Rear rotor previously measured at 22.8 pounds I measured at 19.7 pounds. So then the question I had was just how accurate is the little Pelouze scale. I grabbed a 25 pound dumbbell to find out. It weighed in at exactly 25 pounds. So these numbers are pretty accurate and might make the stock brake guys happier. I believe OC kid used a bathroom scale to weigh the brakes before so that could be the reason for the difference. __________________

09-14-2008, 12:19 PM	#2
schnell325 Major Drives: '92 325i/4 & '08 M3 Join Date: Aug 2007 Location: BC Posts: 1,186 iTrader: (1)	Very nice post. Thank you. __________________ 2008 M3 Coupe SG 6MT: AA equipped H&R springs Michelin Cup tires 2011 335xi coming soon

10-02-2008, 06:51 PM	#3
ArsenalFC Second Lieutenant Drives: \| DCT \| AW \| M3 \| Join Date: Sep 2007 Location: \| LV \| CA \| Posts: 244 iTrader: (0)	So is there an advantage in weight over the Brembos? __________________ Arsenal F.C. - Gooner 4 Life \| Dixis Titanium Exhaust \| GruppeM Intake \| Rdsport Springs \| Brembo BBK \| OZ Ultraleggera HLT \| EVERYTHING FOR SALE. PM IF INTERESTED.

10-02-2008, 11:26 PM	#7
lucid Major General Drives: Z4M coupe; E30 M3 track Join Date: Apr 2007 Location: USA Posts: 7,591 iTrader: (0) View lucid's Garage	What makes you think that dumbbell indeed weighs 25lbs? Sorry I couldn't resist, but you get my drift. Also, global ban on OC Kid for using bathroom scale!? __________________ Track vids: http://www.youtube.com/user/nhmse92m3#p/u

10-15-2008, 08:41 AM	#12
lucid Major General Drives: Z4M coupe; E30 M3 track Join Date: Apr 2007 Location: USA Posts: 7,591 iTrader: (0) View lucid's Garage	Badfish, do you have accurate weight specs on the Brembo kit in your car? I want to update the numbers here with the numbers you posted on this thread: http://www.m3post.com/forums/showthr...ngs+benchmarks But I'll stick to OC's numbers since whatever error his scale might have had is at least applies to both the stock and the Brembo systems, so the weight difference should be relatively accurate. If I use your numbers, I can't use OC's numbers for the Brembos. Thanks for taking the time weigh these things guys. __________________ Track vids: http://www.youtube.com/user/nhmse92m3#p/u

10-02-2008, 06:53 PM	#4
!Xoible Banned Drives: .... Join Date: Nov 2006 Location: . Posts: 1,669 iTrader: (4) View !Xoible's Garage	why are you weighing toyota breaks?

10-16-2008, 02:42 PM	#15
m_parade Private First Class Drives: 08 Jet Black M3 Coupe Join Date: Apr 2008 Location: Vancouver, Canada Posts: 126 iTrader: (0)	Brembo performed extremely well under excessive amount of hard braking. I was very impressed with them. Take a picture of the Brembo BBK and a pic of stock brakes then compare with them side by side, you guys will know why.