E90Post
 


European Auto Source
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > Need DIY for Brake Rotor Change



Comment
 
Tutorial Tools Search this Tutorial
  Need DIY for Brake Rotor Change
govtec
09-02-2010
I searched but didn't find any post for a diy rotor/disc change. Is it a difficult job? I saw the brake pad change thread on the 335 and it looks fairly simple. Is it just 2 bolts holding the caliper to rotor? We're talking E90 here. I'm looking to order my parts from here:...
  #22  
By parapaul on 06-14-2013, 08:06 AM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
Quote:
Originally Posted by samdaman View Post
Anyone know if it's ok to resurface BMW rotors? I put new EBC ceramic RED brake pads onto my existing rotors without resurfacing them (I also got the spray on disc brake quieter) but they squeal like crazy when I'm braking at slow speed after they've warmed up a little. The car has 55k miles on them and I believe this is the first brake change. The inner and outer edges are pretty high and then sink in a bit where the main pads hit the rotors so I'm thinking that's what's causing the squeal. The EBC Red brakes have an anti-squeal shim on them so I'm assuming the squeal is more coming from the the uneven rotor surface or edges. So my question is...is it too late to try resurfacing the rotors since I've put about 100 miles on the brake pads? (and does BMW even sanction resurfacing rotors or are they simply 1-time use?) OR should I just paste on some anti-brake squeal on the backs of the pads? HELP! The squeal is killing me!!!
Relax

EBC pads tend to squeal pretty badly for the first couple of hundred miles due to their bed-in coating. I wouldn't worry about it until at least then. They definitely DO NOT need any anti-squeal paste of any sort, they have rubber shims on the back from the factory.
Reply With Quote
  #23  
By Amini77 on 07-26-2013, 05:00 AM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
Quote:
Originally Posted by samdaman View Post
Anyone know if it's ok to resurface BMW rotors? I put new EBC ceramic RED brake pads onto my existing rotors without resurfacing them (I also got the spray on disc brake quieter) but they squeal like crazy when I'm braking at slow speed after they've warmed up a little. The car has 55k miles on them and I believe this is the first brake change. The inner and outer edges are pretty high and then sink in a bit where the main pads hit the rotors so I'm thinking that's what's causing the squeal. The EBC Red brakes have an anti-squeal shim on them so I'm assuming the squeal is more coming from the the uneven rotor surface or edges. So my question is...is it too late to try resurfacing the rotors since I've put about 100 miles on the brake pads? (and does BMW even sanction resurfacing rotors or are they simply 1-time use?) OR should I just paste on some anti-brake squeal on the backs of the pads? HELP! The squeal is killing me!!!
I've heard bad stories from resurfacing BMW rotors. Apparently they aren't like "honda or toyota rotors to be so easily resurfaced" according to my mechanic's worker and they're easily warped when resurfaced.
Reply With Quote
  #24  
By danb35 on 08-04-2013, 03:15 PM
Member reviews
Difficulty [ 1 = Difficult ]
60%60%60%
3
Cost [ 1 = Expensive ]
60%60%60%
3
DIY Clarity [ 1 = Not clear ]
60%60%60%
3
Average 60%
Quote:
Originally Posted by Efthreeoh View Post
PB Blaster is okay. If you want a real good penetrating oil, get Kroil from Kano Labs. The stuff is awesome and doesn't smell like skunk piss. You can only get it from Kano Labs on line.
Actually, Kroil is widely available--I've ordered mine from a gunsmith supply house called Brownell's for some years, but I'm sure there are other sources. It does work well.
Reply With Quote
  #25  
By wdeerfield on 03-20-2014, 01:20 PM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
Quote:
Originally Posted by Amini77 View Post
I've heard bad stories from resurfacing BMW rotors. Apparently they aren't like "honda or toyota rotors to be so easily resurfaced" according to my mechanic's worker and they're easily warped when resurfaced.
bmw rotors are already so thin to save weight that after wear, there usually isnt enough to save them by resurfacing. Its best to just do new as you can get a whole brake package for ~$500 from Turner using OEM suppliers for rotors and OEM pads/sensors
Reply With Quote
  #26  
By mweisdorfer on 03-26-2014, 03:15 PM
There are two bolts that hold the caliper to the guide. Then there are two bolts that hold the guide in place. Then there is a small screw that holds the rotor on.

Typically speaking, you can get one change of pads on the Rotors. You should not have to change out the rotors at 55k. I would look into Akebono ceramic pads. On the 2nd change of pads, you will most likely have to change out the rotors.

However, I am wondering about the lip you describe on the current rotor. That is usually a sign the rotor is done and needs to be changed out.

I would not re-surface a BMW rotor. (Zimmerman).
Reply With Quote
  #27  
By Efthreeoh on 03-29-2014, 09:00 AM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
I've done at least 15 brake jobs on BMWs. Early on I tried two or three of them (on different cars) without changing the rotors and found that the original rotors, when they have gone through a full pad set, will not make it all the way through the second set of pads without warping. Machining the old rotor to get it the surface properly flat, which should be done to allow the pads to properly bed with the rotors, makes the rotors too thin to last through the second set of pads. If you are DIYing your brakes, you are saving more in labor than the difference in paying for the old rotors to get resurfaced versus the cost of new rotors, so it just makes sense to start out with fresh pads and rotors. And like I said previously, just get a set of new rotor screws while your at it.
Reply With Quote
  #28  
By 335e92tx on 03-29-2014, 08:54 PM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
Quote:
Originally Posted by Efthreeoh View Post
I've done at least 15 brake jobs on BMWs. Early on I tried two or three of them (on different cars) without changing the rotors and found that the original rotors, when they have gone through a full pad set, will not make it all the way through the second set of pads without warping. Machining the old rotor to get it the surface properly flat, which should be done to allow the pads to properly bed with the rotors, makes the rotors too thin to last through the second set of pads. If you are DIYing your brakes, you are saving more in labor than the difference in paying for the old rotors to get resurfaced versus the cost of new rotors, so it just makes sense to start out with fresh pads and rotors. And like I said previously, just get a set of new rotor screws while your at it.
Good advice there EFth. And considering the price of a good set of rotors now, its a no brainer, see my update to the pad change thread on the current deal from tire rack.

For other 335 owners instead if using a hammer when trying to get the rotors off check #177
http://www.e90post.com/forums/showpo...&postcount=177
Last edited by 335e92tx; 03-29-2014 at 09:01 PM.
Reply With Quote
  #29  
By Kruz on 07-10-2014, 03:06 PM
sub
Reply With Quote
  #30  
By Hops128i on 07-10-2014, 07:29 PM
has anyone used a rotor puller? Do they work?
Reply With Quote
Comment

Bookmarks

Tutorial Tools Search this Tutorial
Search this Tutorial:

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 07:28 PM.




e90post
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