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
 
Racewerkz Engineering
Post Reply
 
Thread Tools Search this Thread
      03-11-2012, 09:30 AM   #1
ajvee
Major
 
Drives: None
Join Date: Sep 2009
Location: None

Posts: 1,433
iTrader: (13)

Original pads at 35K and still going strong?

Guys,

My car has over 35K miles and my idrive says that I have 9K miles left on the front pads. I think something is amiss because I've done 6 or 7 HPDE sessions with the car as well. I am at an intermediate stage so I am guessing that I don't brake nearly as hard as some of you, but yet I am confused about how the sensors say I have 9K miles left.

Upon visual inspection, the outer pads look like they are getting low, but haven't seen the inners.

Any thoughts?

Thank you.
ajvee is offline  
0
Reply With Quote
      03-11-2012, 09:35 AM   #2
New_m3
Second Lieutenant
 
Drives: E92 M3
Join Date: Jun 2008
Location: UK

Posts: 237
iTrader: (0)

Mine is on 38k and still on the original pads and disks. The pads have wear sensors on them so when they get too low the idrive will tell you to change them.
New_m3 is offline  
0
Reply With Quote
      03-11-2012, 09:56 AM   #3
arter
collecting toys
 
arter's Avatar
 
Drives: M3 MCB
Join Date: May 2008
Location: rochester, ny

Posts: 736
iTrader: (0)

I would take the front tires off so you can see the thickness of both the outer and inner pad. If you are doing HPDE events, you might want to change the pads if they are less than 6 mm ( about the thickness of the backing plate).
I think the sensor goes off about at the 3 mm thickness. The estimated mileage is made by brake intensity and count, it doesn't know the actual thickness of the pad until the sensor touches....

If you weren't doing HPDE events, then you could go much lower in pad thickness. ( The worry is that in a HPDE event you might go through a pad quicker as the pad gets thinner...)
__________________
2011 e92 M3 Monte Carlo Blue ESS 535
2010 Honda FIT
2006 SLK 55 AMG
arter is offline  
0
Reply With Quote
      03-11-2012, 10:01 AM   #4
PhillyNate
BMWCCA #405750
 
PhillyNate's Avatar
 
Drives: 2011 E92 M3 ZCP
Join Date: Apr 2011
Location: Philadelphia

Posts: 1,825
iTrader: (0)

Garage List
2011 BMW E92 M3  [5.00]
DAMN guys, these pads and rotors may last the life of the car for me then.
__________________

"what I'm driving here...is an ending." Jeremy Clarkson
2011 Alpine White BMW M3 6mt ZCP Coupe
2008 Alpine White BMW 328i 6mt Coupe (retired 06/21/11
)

PhillyNate is offline   United_States
0
Reply With Quote
      03-11-2012, 12:02 PM   #5
1MOREMOD
2014 Track Days - 3|Ridge 1:54:61|Pacific 1:37:36
 
1MOREMOD's Avatar
 
Drives: Race car->
Join Date: Mar 2009
Location: check your mirrors

Posts: 10,787
iTrader: (5)

thats crazy you need to brake harder on your HPDEs. pads only last a couple of events and for some on here just single day especially OEMs. mine melted and left deposits all over my front rotors.
__________________

02 Tiag e46 M3|6MT|GC plates|MCS c.o.|GC bars|GC race control arms|GC bushings & bearings|BW eng. & tran. mounts|subframe kit|BW race shifter|BW Jaffster|Euro header|BW race|K&N c.a.i.|Epic race tune|Rouge race pulleys|Seibon CF hood|CSL bumper|ST-40|SR34|SS lines|half cage|Recaro profi|Profi 2 harness|BMWpedals|Apex studs|
1MOREMOD is offline   United_States
0
Reply With Quote
      03-11-2012, 12:40 PM   #6
bigjae1976
Takes threads off topic...daily
 
bigjae1976's Avatar
 
Drives: 11 E90 M3 Individual
Join Date: Mar 2006
Location: Milwaukee, WI

Posts: 5,067
iTrader: (11)

Garage List
2004 BMW M3  [4.50]
2011 BMW E90 M3  [5.00]
2013 BMW 328i  [5.00]
Are you driving a 6MT? Usually you have choice...beat down your brake pads or beat down you clutch/transmission.
__________________


Sponsored by Momentum BMW #593...We Bleed BMW BLUE!
bigjae1976 is offline  
0
Reply With Quote
      03-11-2012, 12:42 PM   #7
1MOREMOD
2014 Track Days - 3|Ridge 1:54:61|Pacific 1:37:36
 
1MOREMOD's Avatar
 
Drives: Race car->
Join Date: Mar 2009
Location: check your mirrors

Posts: 10,787
iTrader: (5)

i beat my brakes. i brake very hard and shift during but after significant speed is coming off.
__________________

02 Tiag e46 M3|6MT|GC plates|MCS c.o.|GC bars|GC race control arms|GC bushings & bearings|BW eng. & tran. mounts|subframe kit|BW race shifter|BW Jaffster|Euro header|BW race|K&N c.a.i.|Epic race tune|Rouge race pulleys|Seibon CF hood|CSL bumper|ST-40|SR34|SS lines|half cage|Recaro profi|Profi 2 harness|BMWpedals|Apex studs|
1MOREMOD is offline   United_States
0
Reply With Quote
      03-11-2012, 01:39 PM   #8
gallian93
Lieutenant
 
gallian93's Avatar
 
Drives: 11 X6M / X5
Join Date: Jul 2010
Location: philadelphia PA

Posts: 593
iTrader: (16)

Garage List
i'm at 47K miles...
still on original pads... car says another 9k to go....
my service guy says it's because i've got a 6MT and downshift properly...
as usual ... i didn't believe him
but after some searches, i saw that that is not unheard off...
that said never done any HPDE...
gallian93 is offline  
0
Reply With Quote
      03-11-2012, 01:52 PM   #9
ajvee
Major
 
Drives: None
Join Date: Sep 2009
Location: None

Posts: 1,433
iTrader: (13)

Quote:
Originally Posted by bigjae1976 View Post
Are you driving a 6MT? Usually you have choice...beat down your brake pads or beat down you clutch/transmission.

Good point. Lately, I've been easier on the transmission and harder on the brakes. For whatever reason, it is more intuitive for me to downshift progressively rather than slam down to bleed off speed. To alter my patterns, I've started to brake more and downshift less during regular driving as well.

Regardless, Stoptechs are on their way so can start "leaning" on it a bit more.
ajvee is offline  
0
Reply With Quote
      03-11-2012, 01:53 PM   #10
ajvee
Major
 
Drives: None
Join Date: Sep 2009
Location: None

Posts: 1,433
iTrader: (13)

Quote:
Originally Posted by chriszeh View Post
thats crazy you need to brake harder on your HPDEs. pads only last a couple of events and for some on here just single day especially OEMs. mine melted and left deposits all over my front rotors.
LOL! I will strive to have them burned by the end of my next HPDE day!
ajvee is offline  
0
Reply With Quote
      03-11-2012, 02:00 PM   #11
ajvee
Major
 
Drives: None
Join Date: Sep 2009
Location: None

Posts: 1,433
iTrader: (13)

Quote:
Originally Posted by arter View Post
I would take the front tires off so you can see the thickness of both the outer and inner pad. If you are doing HPDE events, you might want to change the pads if they are less than 6 mm ( about the thickness of the backing plate).
I think the sensor goes off about at the 3 mm thickness. The estimated mileage is made by brake intensity and count, it doesn't know the actual thickness of the pad until the sensor touches....

If you weren't doing HPDE events, then you could go much lower in pad thickness. ( The worry is that in a HPDE event you might go through a pad quicker as the pad gets thinner...)
I will make sure that I do this when I get a chance.

On a side note, are you going to the glen track event on the weekend of the 4th? I see that you are in Rochester.
ajvee is offline  
0
Reply With Quote
      03-11-2012, 02:04 PM   #12
arter
collecting toys
 
arter's Avatar
 
Drives: M3 MCB
Join Date: May 2008
Location: rochester, ny

Posts: 736
iTrader: (0)

yeap, I will be at the BMW GVC event may 5&6th at Watkins Glen.
Also will be at Mid Ohio BMW event march 31 & April 1th....


Plus probably something in between....
__________________
2011 e92 M3 Monte Carlo Blue ESS 535
2010 Honda FIT
2006 SLK 55 AMG
arter is offline  
0
Reply With Quote
      03-11-2012, 02:27 PM   #13
bigjae1976
Takes threads off topic...daily
 
bigjae1976's Avatar
 
Drives: 11 E90 M3 Individual
Join Date: Mar 2006
Location: Milwaukee, WI

Posts: 5,067
iTrader: (11)

Garage List
2004 BMW M3  [4.50]
2011 BMW E90 M3  [5.00]
2013 BMW 328i  [5.00]
Quote:
Originally Posted by ajvee View Post
Good point. Lately, I've been easier on the transmission and harder on the brakes. For whatever reason, it is more intuitive for me to downshift progressively rather than slam down to bleed off speed. To alter my patterns, I've started to brake more and downshift less during regular driving as well.

Regardless, Stoptechs are on their way so can start "leaning" on it a bit more.
Yeah, I would definitely use the brakes a lot more at the track. A set of pads is much easier and cheaper to replace than a clutch. I used to be real easy on my brakes until I did the clutch in my E46. It wasn't the worst thing ever but not exactly fun...not looking forward to it.
__________________


Sponsored by Momentum BMW #593...We Bleed BMW BLUE!
bigjae1976 is offline  
0
Reply With Quote
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
Forum Jump


All times are GMT -5. The time now is 05:27 AM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
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