BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Suspension | Brakes | Chassis
 
Mporium BMW
Post Reply
 
Thread Tools Search this Thread
      03-20-2018, 01:30 AM   #45
tlow98
Brigadier General
2163
Rep
4,968
Posts

Drives: 2009 E91, 2014 F15 x35i
Join Date: Aug 2011
Location: Bay Area

iTrader: (2)

Quote:
Originally Posted by Scharbag View Post
What does the used price of a car have to do with maintenance costs? Brakes for an Audi RS7 with the ceramic package are $7,000 per rotor. That will not come down in price as the value of the car depreciates.

If people want a cheap car to maintain, buy a Honda.
Everything with cars gets cheaper over time. Except vintage or rare and popular. People will source them form junkyards or eBay for 30% of original value. Or they'll change to the steel setup.

No one buying a $20k Audi in 8 years has the money for $7k for one rotor. they'll get creative. Or, they'll be offered cheaper than $7k. I'm guessing both.
Appreciate 1
tooloud10699.00
      03-20-2018, 06:47 AM   #46
pbonsalb
Lieutenant General
5179
Rep
10,555
Posts

Drives: 18 F90 M5, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: New England

iTrader: (4)

They will be converting to regular brakes or buying an aftermarket BBK. Already I have seen a set Brembo calipers for ceramic rotors but without the rotors from an M car for sale in our forums.
Appreciate 1
tlow982162.50
      03-20-2018, 12:14 PM   #47
GeorgeA
Major
GeorgeA's Avatar
United_States
755
Rep
1,408
Posts

Drives: E92 M3
Join Date: Jan 2016
Location: Los Angeles

iTrader: (3)

Quote:
Originally Posted by SDPLV View Post
How do we know they're inferior to daily drive aside from not having an OEM price tag? I'd be very surprised if I can notice any difference at all on my daily round trip commute up and down a highway and across 5-10 traffic lights.

Plus, I'm not compromising on the M3 engine. The S65 is what I am in love with on this car. Not the brake rotors. Somewhat the interior (steering wheel, M seats w/ extension & side bolsters). Not even the exterior necessarily (I actually like the F80 look better, but I'm not buying it for looks alone).
If you're only getting to cruise to work, then go for it. BMW does hundreds of thousand miles of testing for these brakes, the M3 has enough power to easily cook solid one piece rotors. The other issue would be the actual quality of the rotors themselves. For an almost 14" rotor to cost 40 bucks, seems a bit sketch to me.
Appreciate 0
      03-20-2018, 12:22 PM   #48
Banana Hammock
Beefcake
Banana Hammock's Avatar
3769
Rep
711
Posts

Drives: NA
Join Date: Apr 2016
Location: Los Angeles

iTrader: (2)

Cutting corners on safety equipment doesn't make sense to me.
Appreciate 1
GeorgeA755.00
      03-20-2018, 12:22 PM   #49
GeorgeA
Major
GeorgeA's Avatar
United_States
755
Rep
1,408
Posts

Drives: E92 M3
Join Date: Jan 2016
Location: Los Angeles

iTrader: (3)

Quote:
Originally Posted by pbonsalb View Post
Why do you think you can’t go fast with these solid rotors? A 335i is easily modded to go just as fast as an M3.

They are almost certainly heavier than the 2 piece stock rotors, but other than that, I think they would be fine for the vast majority of M3 drivers. And some of the hard core ones who track their cars will probably try these because they trash expensive stock rotors. I want to read the reports from them.
The point of 2 piece drilled rotors is to vent the heat. I have ran solid one piece rotors on my G37S which have 14" brakes as well and those would cook very easily, and that is with a 330hp car. Almost every car I've driven with "regular" solid rotors have warped during street driving. On the track the OEM rotor (which has been tested to a completely different level vs the 40$ rock auto one) tends to heat up and fade, and those are 2 piece drilled, imagine how bad the solid ones would be. Are cheaper rotors better for track folks? Yes.. Is is better to save money and lose brakes on your 2nd lap? No. These wouldn't work for those who track, it's actually dangerous.

My point is, you're buying and driving an M3, you knew you had to spend a bit more on maintenance, buy the proper parts. FCP euro parts has a warranty where they give you lifetime replacement for any part. That means buy one set of rotors from them and when they wear, send it back for a new replacements. This alternative is cost friendly and you will be running proper OEM rotors vs gambling with your life every time you drive fast.
Appreciate 0
      03-20-2018, 12:48 PM   #50
pbonsalb
Lieutenant General
5179
Rep
10,555
Posts

Drives: 18 F90 M5, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: New England

iTrader: (4)

Real world driving and track testing will reveal how well or not well these $42 one piece rotors work. I dont think they will fail on the second lap at the track or mean you are gambling with your life every time you drive fast. We will know soon enough.

I personally bought BMW rotors, because they are lighter than one piece rotors and last for years with my driving. But I support people trying the inexpensive one piece rotors and do not subscribe to the theory that because you have a bmw you should spend a lot of money on original bmw parts.
Appreciate 1
tlow982162.50
      03-20-2018, 12:53 PM   #51
deansbimmer
BimmerPost Supporting Vendor
deansbimmer's Avatar
3741
Rep
2,907
Posts


Drives: 2011 E93 M3
Join Date: Nov 2014
Location: DFW, Texas

iTrader: (17)

Garage List
1988 BMW M3  [0.00]
2013 BMW M3  [0.00]
2011 X5M  [0.00]
2011 BMW M3  [0.00]
Quote:
Originally Posted by pbonsalb View Post
But I support people trying the inexpensive one piece rotors and do not subscribe to the theory that because you have a bmw you should spend a lot of money on original bmw parts.
Having operated a shop here for years, I can without a doubt certify that a significant percentage of BMW owners are among the cheapest of car owners, many being in it only for the "fame".
Appreciate 7
SYT_Shadow11421.00
tlow982162.50
Scharbag2617.50
oolas3387.00
BOOF-M34448.50
6ixSpd5996.50
GORDON.M31403.00
      03-20-2018, 01:18 PM   #52
SDPLV
Major
493
Rep
1,003
Posts

Drives: 2008 E90 M3 DCT Silverstone II
Join Date: Aug 2016
Location: Las Vegas

iTrader: (1)

Garage List
2008 BMW M3  [0.00]
Quote:
Originally Posted by deansbimmer View Post
Quote:
Originally Posted by pbonsalb View Post
But I support people trying the inexpensive one piece rotors and do not subscribe to the theory that because you have a bmw you should spend a lot of money on original bmw parts.
Having operated a shop here for years, I can without a doubt certify that a significant percentage of BMW owners are among the cheapest of car owners, many being in it only for the "fame".
Well those are the ones you see selling the car for any little repair (see bro who just sold car because of needing a battery replacement, and new brake pads/rotors).

I don't know what people are doing to warp their rotors on street driving. I feel like I don't even use my brakes that much to begin with as the engine slows itself and I'm not racing redlight to redlight like I'm 18 yrs old.

I have not skimped on my E90 M at all. I've stayed ahead on maintenance, including "lifetime" fluid changes, and also do oil changes every 5k miles. (Just spent $2k on all that and new tires a week ago, without hesitation.) This is more out of low-cost curiosity for me than it is one of purely saving money. If I really wanted to save money on my car, I would have driven a Prius.

If my RockAuto $42 rotor actually cracks while just daily street driving, I know not to buy these again, and would warn everyone on here not to buy them.

The only problem is that my OEM rotors are still holding strong...so I can't justify "downgrading" to these anytime soon. That would actually be throwing money away.
__________________
Current: 08 E90 M3 DCT SSII w/ BE RB Swap, H8 Lux 180s, MS Drop-in AF, CF spoiler, CF diffuser, OEM CF leather trim, CF DCT paddles, Custom DCT flatbottom wheel, MirrorTap 9500ix, RockAuto rotors, Hawk HPS pads, AMS ECU 93 Oct Map Tune, GTS DCT update, Slambo custom undertray
Appreciate 0
      03-20-2018, 01:20 PM   #53
tlow98
Brigadier General
2163
Rep
4,968
Posts

Drives: 2009 E91, 2014 F15 x35i
Join Date: Aug 2011
Location: Bay Area

iTrader: (2)

Quote:
Originally Posted by deansbimmer View Post
Having operated a shop here for years, I can without a doubt certify that a significant percentage of BMW owners are among the cheapest of car owners, many being in it only for the "fame".
Sad but true. Mostly it's the Forum M3 owners that buy OE equipment with pride, much to the chagrin of their wallet.

Some parts I absolutely would buy OE parts bc they're a pain to replace or are mission critical...I'm on the fence with these rotors. I'd probably try them, bc all-in they're cheaper than one OE rotor, but I've been using cheap blanks for years with high quality (OE or OE 'formulated') pads and have yet to have an issue.

For me, I'd buy them and DIY them just to see. Not a lot of skin in the game there. I do, however, wish someone like Centric made them. Would have a lot more confidence in them.

Here's another seller of the same Bendix M3 brake rotor. It actually looks similar to the way a lot of current Mercedes rotors are made. Interesting.
http://www.autoanything.com/brakes/7...xoC16cQAvD_BwE

Last edited by tlow98; 03-20-2018 at 01:26 PM..
Appreciate 0
      03-20-2018, 01:21 PM   #54
///M3Fresh
Lieutenant
United_States
258
Rep
564
Posts

Drives: E90 M3
Join Date: Jun 2011
Location: Las Vegas

iTrader: (1)

Quote:
Originally Posted by deansbimmer View Post
Having operated a shop here for years, I can without a doubt certify that a significant percentage of BMW owners are among the cheapest of car owners, many being in it only for the "fame".
There is a difference between being cheap and being smart/open to the idea of research. That is all he is saying... Plus if they are proven to work, even on the track, would you not want to know that there is a cheap alternative out there?
__________________
2009 E90 M3 DCT IB Slick Top | 2017 911 Carrera White 7MT Slick Top | 2003.5 E46 M3 CB SMG | 2005 Audi A4 USP Black 6MT
Appreciate 1
SDPLV493.00
      03-20-2018, 01:24 PM   #55
SDPLV
Major
493
Rep
1,003
Posts

Drives: 2008 E90 M3 DCT Silverstone II
Join Date: Aug 2016
Location: Las Vegas

iTrader: (1)

Garage List
2008 BMW M3  [0.00]
Note: If I was going to track the car, I would NOT be buying these. That is my eventual plan with the car, when I can afford to and have a 3 car garage. Yet when I go that route I'm going with a BBK and the accompanying rotors.
__________________
Current: 08 E90 M3 DCT SSII w/ BE RB Swap, H8 Lux 180s, MS Drop-in AF, CF spoiler, CF diffuser, OEM CF leather trim, CF DCT paddles, Custom DCT flatbottom wheel, MirrorTap 9500ix, RockAuto rotors, Hawk HPS pads, AMS ECU 93 Oct Map Tune, GTS DCT update, Slambo custom undertray
Appreciate 0
      03-20-2018, 01:25 PM   #56
SDPLV
Major
493
Rep
1,003
Posts

Drives: 2008 E90 M3 DCT Silverstone II
Join Date: Aug 2016
Location: Las Vegas

iTrader: (1)

Garage List
2008 BMW M3  [0.00]
Quote:
Originally Posted by ///M3Fresh View Post
Quote:
Originally Posted by deansbimmer View Post
Having operated a shop here for years, I can without a doubt certify that a significant percentage of BMW owners are among the cheapest of car owners, many being in it only for the "fame".
There is a difference between being cheap and being smart/open to the idea of research. That is all he is saying... Plus if they are proven to work, even on the track, would you not want to know that there is a cheap alternative out there?
This.
__________________
Current: 08 E90 M3 DCT SSII w/ BE RB Swap, H8 Lux 180s, MS Drop-in AF, CF spoiler, CF diffuser, OEM CF leather trim, CF DCT paddles, Custom DCT flatbottom wheel, MirrorTap 9500ix, RockAuto rotors, Hawk HPS pads, AMS ECU 93 Oct Map Tune, GTS DCT update, Slambo custom undertray
Appreciate 1
      03-20-2018, 01:50 PM   #57
deansbimmer
BimmerPost Supporting Vendor
deansbimmer's Avatar
3741
Rep
2,907
Posts


Drives: 2011 E93 M3
Join Date: Nov 2014
Location: DFW, Texas

iTrader: (17)

Garage List
1988 BMW M3  [0.00]
2013 BMW M3  [0.00]
2011 X5M  [0.00]
2011 BMW M3  [0.00]
Quote:
Originally Posted by ///M3Fresh View Post
There is a difference between being cheap and being smart/open to the idea of research. That is all he is saying... Plus if they are proven to work, even on the track, would you not want to know that there is a cheap alternative out there?
I know that's what he was saying, that's why I didn't say it's 100% of owners lol. People learning about their car like us forum folk are the minority.

Quote:
I don't know what people are doing to warp their rotors on street driving.
I don't think many people are actually warping their rotors. I suspect most street drivers are discarding their rotors due to pad deposits. Many techs haven't even heard of that term, and they automatically diagnose it as warped rotors since they feel similar under operation.
Appreciate 1
SDPLV493.00
      03-20-2018, 02:09 PM   #58
oolas3
Captain
387
Rep
876
Posts

Drives: BMW
Join Date: May 2015
Location: United States

iTrader: (0)

Quote:
Originally Posted by deansbimmer View Post
Having operated a shop here for years, I can without a doubt certify that a significant percentage of BMW owners are among the cheapest of car owners, many being in it only for the "fame".

Your location is also where the original "$30,000 Millionaire" originated.
Appreciate 2
NoHedge67.50
      03-20-2018, 02:14 PM   #59
spiderspider
Captain
312
Rep
657
Posts

Drives: E90 M3 DCT, 991 C4S, E46 330i
Join Date: Dec 2014
Location: Danville, CA

iTrader: (0)

there's warping and then there's 'warping'. i just assume people are talking about pad deposits. only time i've had issues with rotors was due to improper bedding procedure or getting grease on the rotor or pad during installation. but i don't track.
Appreciate 0
      03-20-2018, 02:24 PM   #60
SDPLV
Major
493
Rep
1,003
Posts

Drives: 2008 E90 M3 DCT Silverstone II
Join Date: Aug 2016
Location: Las Vegas

iTrader: (1)

Garage List
2008 BMW M3  [0.00]
Quote:
Originally Posted by spiderspider View Post
there's warping and then there's 'warping'. i just assume people are talking about pad deposits. only time i've had issues with rotors was due to improper bedding procedure or getting grease on the rotor or pad during installation. but i don't track.
You mean the "warping" where the local chain is trying to convince you that you MUST replace all 4 corners pads and rotors for $1000-1400 or your car is going to flip over when trying to stop at the neighborhood stop sign.
__________________
Current: 08 E90 M3 DCT SSII w/ BE RB Swap, H8 Lux 180s, MS Drop-in AF, CF spoiler, CF diffuser, OEM CF leather trim, CF DCT paddles, Custom DCT flatbottom wheel, MirrorTap 9500ix, RockAuto rotors, Hawk HPS pads, AMS ECU 93 Oct Map Tune, GTS DCT update, Slambo custom undertray
Appreciate 1
BOOF-M34448.50
      03-20-2018, 04:40 PM   #61
burtonsbs5114
Major
burtonsbs5114's Avatar
United_States
366
Rep
1,198
Posts

Drives: 2021 F87 M2c. LBB, 6mt
Join Date: Nov 2014
Location: Fort Lauderdale, FL

iTrader: (0)

Garage List
Quote:
Originally Posted by oolas3 View Post
Your location is also where the original "$30,000 Millionaire" originated.
I always thought that was Phoenix/Scottsdale...
__________________
2021 F87 M2c. Long Beach Blue over black with blue stitching. 6mt, executive package, slick top.
Appreciate 0
      03-20-2018, 08:02 PM   #62
BOOF-M3
Brigadier General
BOOF-M3's Avatar
United_States
4449
Rep
4,014
Posts

Drives: 2011 M3
Join Date: Nov 2014
Location: South Pasadena Florida

iTrader: (1)

Quote:
Originally Posted by Inflame View Post
Looks like rockauto has added more rotors for the E9x chassis, $42 a rotor...

Anyone try these yet? I run the $35 e46m3 rotors but centric on my E36 (bbk), with no issues.

http://www.rockauto.com/en/catalog/b...hub,rotor,1896

I'm tempted to buy and try them out!
I figured why not go right to the source. I contacted Bendix via email and hope to share their response if they are willing to play along. My email below.

Hello, there is an interesting discussion going on in M3Post about your Bendix PRT6345 rotors (1 of the 4 corners just to give you an idea). The question is can an aftermarket rotor that sells for $42 be reliable on an 2008-2013 E9X series BMW M3 and specifically for street and track use. There is some general interest in your product and I think that a response from your company on real world testing and any data you would like to share could go a long way with potential customers looking to save a substantial sum of money on a safe and reliable alternative to OEM rotors. I look forward to your response which I plan on posting on the M3Post forum with your permission as my question to you is being posted and members will hopefully be looking forward to your response also.
Yours truly, BOOF-M3
Appreciate 4
SDPLV493.00
TimmyM56241.50
Transfer5242.50
SoCalRPM885.50
      03-20-2018, 08:17 PM   #63
SDPLV
Major
493
Rep
1,003
Posts

Drives: 2008 E90 M3 DCT Silverstone II
Join Date: Aug 2016
Location: Las Vegas

iTrader: (1)

Garage List
2008 BMW M3  [0.00]
Quote:
Originally Posted by BOOF-M3 View Post
Quote:
Originally Posted by Inflame View Post
Looks like rockauto has added more rotors for the E9x chassis, $42 a rotor...

Anyone try these yet? I run the $35 e46m3 rotors but centric on my E36 (bbk), with no issues.

http://www.rockauto.com/en/catalog/b...hub,rotor,1896

I'm tempted to buy and try them out!
I figured why not go right to the source. I contacted Bendix via email and hope to share their response if they are willing to play along. My email below.

Hello, there is an interesting discussion going on in M3Post about your Bendix PRT6345 rotors (1 of the 4 corners just to give you an idea). The question is can an aftermarket rotor that sells for $42 be reliable on an 2008-2013 E9X series BMW M3 and specifically for street and track use. There is some general interest in your product and I think that a response from your company on real world testing and any data you would like to share could go a long way with potential customers looking to save a substantial sum of money on a safe and reliable alternative to OEM rotors. I look forward to your response which I plan on posting on the M3Post forum with your permission as my question to you is being posted and members will hopefully be looking forward to your response also.
Yours truly, BOOF-M3
Who invited the logical/adult in here? :
__________________
Current: 08 E90 M3 DCT SSII w/ BE RB Swap, H8 Lux 180s, MS Drop-in AF, CF spoiler, CF diffuser, OEM CF leather trim, CF DCT paddles, Custom DCT flatbottom wheel, MirrorTap 9500ix, RockAuto rotors, Hawk HPS pads, AMS ECU 93 Oct Map Tune, GTS DCT update, Slambo custom undertray
Appreciate 0
      03-20-2018, 08:24 PM   #64
BOOF-M3
Brigadier General
BOOF-M3's Avatar
United_States
4449
Rep
4,014
Posts

Drives: 2011 M3
Join Date: Nov 2014
Location: South Pasadena Florida

iTrader: (1)

My 11 year old has had my phone all day, what trouble did he get me into now?
Appreciate 2
SDPLV493.00
      03-21-2018, 10:40 AM   #65
nolaman1970
Private
United_States
57
Rep
90
Posts

Drives: 2011 BMW M3 E93
Join Date: Feb 2018
Location: Marrero, LA

iTrader: (0)

Garage List
2011 BMW M3  [0.00]
Rotors and Brakes

I just bought my rear Rotors and Pads from FCP Euro, and when they wear out I get them replaced for free just ship the old ones back, sticking with the OEM or Zimmerman or rebranded by BMW. This works for me.
Appreciate 0
      03-21-2018, 11:10 AM   #66
pbonsalb
Lieutenant General
5179
Rep
10,555
Posts

Drives: 18 F90 M5, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: New England

iTrader: (4)

Most people won’t still own their M3 by the time they wear out their second set of rotors. I replaced my originals at 90k miles and the car was 10 years old. I have had it for 8 years and 60k of those miles, but won’t still have it when it is 20 years old and has 180k miles. I might keep it another 5 years.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 02:45 PM.




m3post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST