335d w/ Brembo brakes bedding procedure

ssN52 · 04-19-2019, 02:20 PM

So I recently bought myself some Brembo brake pads and rotors, and I've been wondering, what is the proper bedding procedure for these pads, considering the 335d's weight comparing to other trims of E90?

335dlci · 04-19-2019, 05:41 PM

Drive it.

Persian Whisperjet · 04-20-2019, 07:53 AM

Quote:

Originally Posted by 335dlci

Drive it.

That's helpful.

Mik325tds · 04-20-2019, 09:19 AM

I find this an interesting question. It looks like the bedding procedures for brake pads have changed in recent years.
I learned the "old school" bedding procedure was to drive at least 500 miles with as light braking as possible in order to mate the pads with the disc friction surfaces with as little scarring as possible.
The new bedding procedures recommend warming up the brakes with 10 repeated brakes (without coming to a complete stop) from about 40 to 10mph with medium brake pressure. Then do 5-10 repeated brakes from around 50mph down to 10mph with hard braking to deposit a friction surface from the pads onto the discs. It's important not to come to a full stop during these stops in order to prevent hot spots on the disc. Cool down the discs gradually by driving at least 10 minutes with as little braking as possible.
When I tried this procedure on a set of R1 concept performance pads they actually went soft during the hard brakes so I'm not really convinced about this method.
I do like what Carid has to say about bedding procedures for Brembo brakes:
https://www.carid.com/brembo/info/bedding-guide.html
This makes sense to me.

RL18 · 04-20-2019, 10:16 AM

Quote:

Originally Posted by Mik325tds

I find this an interesting question. It looks like the bedding procedures for brake pads have changed in recent years.
I learned the "old school" bedding procedure was to drive at least 500 miles with as light braking as possible in order to mate the pads with the disc friction surfaces with as little scarring as possible.
The new bedding procedures recommend warming up the brakes with 10 repeated brakes (without coming to a complete stop) from about 40 to 10mph with medium brake pressure. Then do 5-10 repeated brakes from around 50mph down to 10mph with hard braking to deposit a friction surface from the pads onto the discs. It's important not to come to a full stop during these stops in order to prevent hot spots on the disc. Cool down the discs gradually by driving at least 10 minutes with as little braking as possible.
When I tried this procedure on a set of R1 concept performance pads they actually went soft during the hard brakes so I'm not really convinced about this method.
I do like what Carid has to say about bedding procedures for Brembo brakes:
https://www.carid.com/brembo/info/bedding-guide.html
This makes sense to me.

This is what I did when I did pads and rotors

robnitro · 04-20-2019, 01:32 PM

Pads going soft is a good thing, you outgassed them. The factory sometimes uses an oven to do it but not always. I think these breeding procedures are a safeguard for people who never drive hard. They may never get the pads hot enough.

BB_cuda · 04-23-2019, 03:51 PM

Can we use our ovens instead of bedding them? Not sure if we are talking 250F, 500F, or 1000F (our ovens can't go that high)? I'm sure spouses of us are not happy with my question

Mik325tds · 04-23-2019, 06:25 PM

Quote:

Originally Posted by BB_cuda

Can we use our ovens instead of bedding them? Not sure if we are talking 250F, 500F, or 1000F (our ovens can't go that high)? I'm sure spouses of us are not happy with my question

Yeah. They stink rather unpleasantly when they get hot. But I honestly have no idea on how hot it would need to go.

robnitro · 04-24-2019, 07:39 AM

Bedding also involves transferring pad material to the rotor and heat cycling them which is harder to do in an oven.

Owen81 · 04-26-2019, 11:42 AM

There is a good paragraph about the method and reasoning for the bed in process in this StopTech white paper, Page 5:
https://www.apcautotech.com/getmedia...c-8-2018_1.pdf

They also talk about how it is good for new discs as well, this needs to be done on the car.

I have had slight braking rotor vibrations start and a couple good hard stops like this bedding procedure always seems to solve it, which they do talk about at the bottom of Page 6 in the white paper.

04-19-2019, 02:20 PM	#1
ssN52 New Member 3 Rep 18 Posts Drives: 2011 BMW 328i xDrive E90 Join Date: Jan 2019 Location: New York iTrader: (0)	335d w/ Brembo brakes bedding procedure So I recently bought myself some Brembo brake pads and rotors, and I've been wondering, what is the proper bedding procedure for these pads, considering the 335d's weight comparing to other trims of E90?
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04-19-2019, 05:41 PM	#2
335dlci Lieutenant Colonel 277 Rep 1,575 Posts Drives: 335d Join Date: Apr 2014 Location: Socal iTrader: (0)	Drive it.
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04-20-2019, 09:19 AM	#4
Mik325tds Major 806 Rep 1,191 Posts Drives: 335d M-Sport Join Date: Jul 2014 Location: Greater Detroit iTrader: (0)	I find this an interesting question. It looks like the bedding procedures for brake pads have changed in recent years. I learned the "old school" bedding procedure was to drive at least 500 miles with as light braking as possible in order to mate the pads with the disc friction surfaces with as little scarring as possible. The new bedding procedures recommend warming up the brakes with 10 repeated brakes (without coming to a complete stop) from about 40 to 10mph with medium brake pressure. Then do 5-10 repeated brakes from around 50mph down to 10mph with hard braking to deposit a friction surface from the pads onto the discs. It's important not to come to a full stop during these stops in order to prevent hot spots on the disc. Cool down the discs gradually by driving at least 10 minutes with as little braking as possible. When I tried this procedure on a set of R1 concept performance pads they actually went soft during the hard brakes so I'm not really convinced about this method. I do like what Carid has to say about bedding procedures for Brembo brakes: https://www.carid.com/brembo/info/bedding-guide.html This makes sense to me.
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04-20-2019, 01:32 PM	#6
robnitro Captain 160 Rep 803 Posts Drives: x5 35d e70 2011 Join Date: Sep 2016 Location: NYC area iTrader: (0)	Pads going soft is a good thing, you outgassed them. The factory sometimes uses an oven to do it but not always. I think these breeding procedures are a safeguard for people who never drive hard. They may never get the pads hot enough.
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04-23-2019, 03:51 PM	#7
BB_cuda Brigadier General 765 Rep 3,556 Posts Drives: 2011 335D Msport, 2013 X5D Join Date: Nov 2011 Location: Clear Lake, Texas iTrader: (0)	Can we use our ovens instead of bedding them? Not sure if we are talking 250F, 500F, or 1000F (our ovens can't go that high)? I'm sure spouses of us are not happy with my question
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04-24-2019, 07:39 AM	#9
robnitro Captain 160 Rep 803 Posts Drives: x5 35d e70 2011 Join Date: Sep 2016 Location: NYC area iTrader: (0)	Bedding also involves transferring pad material to the rotor and heat cycling them which is harder to do in an oven.
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04-26-2019, 11:42 AM	#10
Owen81 Lieutenant 83 Rep 432 Posts Drives: 335d, 17/22 TDI Join Date: May 2015 Location: Alberta, Canada iTrader: (0)	There is a good paragraph about the method and reasoning for the bed in process in this StopTech white paper, Page 5: https://www.apcautotech.com/getmedia...c-8-2018_1.pdf They also talk about how it is good for new discs as well, this needs to be done on the car. I have had slight braking rotor vibrations start and a couple good hard stops like this bedding procedure always seems to solve it, which they do talk about at the bottom of Page 6 in the white paper.
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