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
 
do88 Performance
Post Reply
 
Thread Tools Search this Thread
      07-14-2016, 10:09 AM   #1
jritt@essex
BimmerPost Supporting Vendor
jritt@essex's Avatar
United_States
86
Rep
248
Posts


Drives: Cadillac CTS-V
Join Date: Aug 2009
Location: Charlotte, NC

iTrader: (0)

When should you replace your iron brake discs? Article inside.

Gents,
I wrote a short article the other week on iron brake disc replacement. Our customers are constantly asking us this question. Please check it out on our blog. It has some nice pics of discs in various states of wear. Thanks.

When is it Time to Replace My Iron Brake Discs?





Appreciate 2
      07-14-2016, 02:38 PM   #2
roastbeef
Brigadier General
roastbeef's Avatar
United_States
457
Rep
3,007
Posts

Drives: E92 M3
Join Date: Nov 2010
Location: Orange County, CA

iTrader: (1)

thanks for the good info. in the top picture, there is a little metal caught in the top of the J hook. is this indicative of needing replacement?
__________________
Appreciate 0
      07-17-2016, 10:09 AM   #3
bigjae1976
Major General
bigjae1976's Avatar
197
Rep
6,305
Posts

Drives: 11 E90 M3 Individual
Join Date: Mar 2006
Location: Wichita, KS

iTrader: (14)

Garage List
2004 BMW M3  [4.50]
2011 BMW E90 M3  [5.00]
2013 BMW 328i  [5.00]
I like the part where you mention to not forget about checking the backside of the disc. Especially if you retain the OE splash shield, I would think the rear side is subject to higher temps.

I learned my lesson on a set of PFC DD rotors. I was doing something else, removed the rotor disc and the backside of the disc looked absolutely terrible. I wouldn't have felt comfortable driving on the track with it. Never would have known if I did not pull the rotor off. Probably something to be aware of on calipers with removable bridges...need to crawl under and inspect the backside. I RARELY have an opportunity to pull the rotor off since I have the removable bridge.

I do think the front side will not look vastly different from the backside unless you have a problem. Probably not worth checking the backside of a relatively new rotor. But a periodic check early in its service life with more frequent checks as the rotor is used makes sense.
__________________
2015 F34 328iX GT Glacier Silver
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red
Appreciate 0
Post Reply

Bookmarks

Tags
brake, crack, disc, replace, rotor

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 -4. The time now is 02:36 PM.




m3post
m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, 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