2010 2011 BMW 5 Series Forum F10
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
 

2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Wheels / Tires / Suspension / Brakes Rotor Size
Post Reply
 
Thread Tools Search this Thread
      12-31-2023, 10:45 AM   #1
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Rotor Size

I have a 2013 BMW 535i that I recently bought from a private owner who provided me with maintenance paperwork. When I took it in the other day to get an oil change, a BMW super/manager said that the front rotors are the same size as the rear rotors; therefore, being too small. I looked through the paperwork and found that they had installed new rotors in June 2020. I showed him the paperwork and he assured me that they had installed the correct rotors. Later, after I got home and looked at the part numbers, I noticed that the front and rear rotors have different part numbers (Front: 34-11-6-884-301; Rear: 34-21-6-775-287). Are both the rear and front rotors supposed to be the same? Does any one know by looking at the part number if the front rotors are in fact too small? There is no other rotor replacement service anywhere in the paperwork that I've noticed. Is he yankin' my chain, I hope not. TIA!

Last edited by Midwaymonsters; 01-03-2024 at 08:46 PM..
Appreciate 0
      12-31-2023, 12:36 PM   #2
Conserve
Private First Class
180
Rep
125
Posts

Drives: 1976 BMW 2002 & 2015 BMW535i
Join Date: Sep 2023
Location: Ohio

iTrader: (0)

Front rotors are 348x30
rear rotors are 330x20
I am thinking whomever installed them before got the front & rear rotors mixed up. easy way to confirm will be to take one wheel off front & rear and measure thickness.
Attached Images
  

Last edited by Conserve; 12-31-2023 at 12:49 PM.. Reason: .
Appreciate 0
      12-31-2023, 04:29 PM   #3
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Thanks for the information/photos, Conserve!! I'm going to call the 2 shops that the previous owner had taken the car to for tire/brake service to see if they have any information regarding the front rotors. The paperwork I have does not indicate that the rotors had ever been replaced since BMW had put new ones on in 2020. It does seem strange that BMW would accidentally put the incorrect size on the car, but mistakes do happen and that's what I'm trying to find out. Would the rotors have any numbers engraved in them to identify them?

Last edited by Midwaymonsters; 12-31-2023 at 05:06 PM..
Appreciate 0
      12-31-2023, 05:25 PM   #4
Conserve
Private First Class
180
Rep
125
Posts

Drives: 1976 BMW 2002 & 2015 BMW535i
Join Date: Sep 2023
Location: Ohio

iTrader: (0)

I don't think rotors have part# stamped or embossed in them as part of casting. Easiest way would to confirm 100% is taking two wheels off yourself and check rotor thicknesses. Can you post pic of that paperwork.
Appreciate 0
      12-31-2023, 05:45 PM   #5
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Quote:
Originally Posted by Conserve View Post
I don't think rotors have part# stamped or embossed in them as part of casting. Easiest way would to confirm 100% is taking two wheels off yourself and check rotor thicknesses. Can you post pic of that paperwork.
This is from yesterday's invoice.
Attached Images
 
Appreciate 1
      12-31-2023, 06:33 PM   #6
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Quote:
Originally Posted by Midwaymonsters View Post
This is from yesterday's invoice.
These are from the invoice from 2020.
Attached Images
  
Appreciate 0
      12-31-2023, 09:18 PM   #7
Conserve
Private First Class
180
Rep
125
Posts

Drives: 1976 BMW 2002 & 2015 BMW535i
Join Date: Sep 2023
Location: Ohio

iTrader: (0)

Part numbers I wrote down match with your latest posted document. And this is same dealership told you front discs look small for front and you saying they did the job back in 2020. If my understanding is correct then I will take the car back to them and tell them take the wheels off and measure the thickness which is very easy and go from there.

Last edited by Conserve; 12-31-2023 at 09:23 PM.. Reason: .
Appreciate 0
      01-01-2024, 12:16 AM   #8
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Quote:
Originally Posted by Conserve View Post
Part numbers I wrote down match with your latest posted document. And this is same dealership told you front discs look small for front and you saying they did the job back in 2020. If my understanding is correct then I will take the car back to them and tell them take the wheels off and measure the thickness which is very easy and go from there.
Will do, thanks! Happy New Year!!
Appreciate 1
      01-03-2024, 12:20 PM   #9
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Quote:
Originally Posted by Conserve View Post
Part numbers I wrote down match with your latest posted document. And this is same dealership told you front discs look small for front and you saying they did the job back in 2020. If my understanding is correct then I will take the car back to them and tell them take the wheels off and measure the thickness which is very easy and go from there.
BMW sent me a video explaining that the rear rotors are correct but not the front ones. He said that the diameter and thickness are too small. However, he never did state the size of the diameter and thickness, which is what I'm waiting to hear back now from them.
Appreciate 0
      01-03-2024, 08:53 PM   #10
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Apparently, according to BMW, the front rotors are 330x20...WTHeck!
Appreciate 0
      01-04-2024, 08:42 AM   #11
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Quote:
Originally Posted by Conserve View Post
Front rotors are 348x30
rear rotors are 330x20
I am thinking whomever installed them before got the front & rear rotors mixed up. easy way to confirm will be to take one wheel off front & rear and measure thickness.
The photos that you posted are LCI rotors. Since my 535i is a 2013 (pre-LCI), will these fit?
Appreciate 0
      01-04-2024, 07:13 PM   #12
Conserve
Private First Class
180
Rep
125
Posts

Drives: 1976 BMW 2002 & 2015 BMW535i
Join Date: Sep 2023
Location: Ohio

iTrader: (0)

Midwaymonsters Your VIN please

Were you able to get in-touch with the shops and see if they changed rotors post 2020, which was done by BMW dealer per paperwork you showed? If other shop did not change them, I am thinking dealer presumably wrote right part# on paperwork for front rotors, but they grabbed wrong rotors (same as rear ones) and installed for front. This is getting interesting....

Last edited by Conserve; 01-04-2024 at 09:38 PM.. Reason: .
Appreciate 1
      01-05-2024, 06:13 AM   #13
ChiltiCoatl89
Lieutenant
ChiltiCoatl89's Avatar
United_States
1766
Rep
433
Posts

Drives: 2016 F10 BMW 535i M Sport
Join Date: Jun 2023
Location: Nevada

iTrader: (0)

Garage List
Quote:
Originally Posted by Midwaymonsters View Post
The photos that you posted are LCI rotors. Since my 535i is a 2013 (pre-LCI), will these fit?
You can always reach out to ECS tuning or FCP Euro, have a live chat and they will confirm your OEM Rotor measurements
Appreciate 0
      01-05-2024, 09:46 AM   #14
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Quote:
Originally Posted by Conserve View Post
Midwaymonsters Your VIN please

Were you able to get in-touch with the shops and see if they changed rotors post 2020, which was done by BMW dealer per paperwork you showed? If other shop did not change them, I am thinking dealer presumably wrote right part# on paperwork for front rotors, but they grabbed wrong rotors (same as rear ones) and installed for front. This is getting interesting....
One of the two previous shops did not replace the rotors and I'm waiting to hear back from the other. BMW insists that they did not make this error. I'll keep you updated. I don't want to directly ask the previous owner because due to his declining health, I feel it's not appropriate to do so.
Appreciate 0
      01-05-2024, 09:57 AM   #15
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Quote:
Originally Posted by ChiltiCoatl89 View Post
You can always reach out to ECS tuning or FCP Euro, have a live chat and they will confirm your OEM Rotor measurements
Thanks, ChiltiCoatl89. I chatted with ECS Tuning and they confirmed that they're for 2014+.
Appreciate 1
      01-05-2024, 08:34 PM   #16
TZ
Second Lieutenant
51
Rep
227
Posts

Drives: 2011 535i xDrive, 2014 435i CO
Join Date: Mar 2015
Location: NJ

iTrader: (0)

I am recently shopping for my rear rotor. I have a 2011 535iX. I replaced my front rotors with 345/30mm (PN: 34 11 6 884 301) in 2020.
__________________
2011 535i xDrive Black/Black, Michelin PS AS 4
2014 435i RWD Convertible

Service Manual: www.newtis.info
Part: http://www.realoem.com
Appreciate 0
      01-05-2024, 08:58 PM   #17
Conserve
Private First Class
180
Rep
125
Posts

Drives: 1976 BMW 2002 & 2015 BMW535i
Join Date: Sep 2023
Location: Ohio

iTrader: (0)

I did not see your VIN. So I went back and configured pre LCI as followings. With that there are two options for front rotors.

Option 1 is bidirectional rotors

Brake disc, lightweight, ventilated, left 348X36, P/N: 34116785669_OTY 1
Brake disc, lightweight, ventilated, right 348X36, P/N: 34116785670_ QTY 1

Option 2 non bidirectional rotors
Brake disc, ventilated 348X30, P/N: 34116884301 _ QTY 2

So, if 2nd shop did not change rotors then is dealer error. Now if they want to own up to it or not is TBD.
Attached Images
  

Last edited by Conserve; 01-05-2024 at 09:00 PM.. Reason: .
Appreciate 1
      01-06-2024, 09:21 AM   #18
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Quote:
Originally Posted by TZ View Post
I am recently shopping for my rear rotor. I have a 2011 535iX. I replaced my front rotors with 345/30mm (PN: 34 11 6 884 301) in 2020.
Did you install them yourself? If not, may I ask how much it cost you to have them installed? Are you sure they're 345x30? The initial photos above from Conserve has the same PN listed as 348x30.
Appreciate 0
      01-06-2024, 09:58 AM   #19
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Quote:
Originally Posted by Conserve View Post
I did not see your VIN. So I went back and configured pre LCI as followings. With that there are two options for front rotors.

Option 1 is bidirectional rotors

Brake disc, lightweight, ventilated, left 348X36, P/N: 34116785669_OTY 1
Brake disc, lightweight, ventilated, right 348X36, P/N: 34116785670_ QTY 1

Option 2 non bidirectional rotors
Brake disc, ventilated 348X30, P/N: 34116884301 _ QTY 2

So, if 2nd shop did not change rotors then is dealer error. Now if they want to own up to it or not is TBD.
Yes, what you attached is correct. I entered the serial no. of my vehicle on RealOEM.com and that's exactly what it showed. Thanks for your assistance! I'm still waiting to hear back from the other shop. BMW texted me yesterday saying that my "front brake service for your vehicle qualifies for value service pricing. It basically means we can perform that service for approx. 49% off. The front brake service with rotors for your 535i works out to be $611.99 plus tax." Including tax, it comes to $671.66.
Appreciate 0
      01-06-2024, 10:22 AM   #20
TZ
Second Lieutenant
51
Rep
227
Posts

Drives: 2011 535i xDrive, 2014 435i CO
Join Date: Mar 2015
Location: NJ

iTrader: (0)

Quote:
Originally Posted by Midwaymonsters View Post
Did you install them yourself? If not, may I ask how much it cost you to have them installed? Are you sure they're 345x30? The initial photos above from Conserve has the same PN listed as 348x30.
Sorry, it's 348/30mm. I bought here https://www.fcpeuro.com/products/bmw...nn-34116775277 and installed myself
__________________
2011 535i xDrive Black/Black, Michelin PS AS 4
2014 435i RWD Convertible

Service Manual: www.newtis.info
Part: http://www.realoem.com
Appreciate 0
      01-06-2024, 11:38 AM   #21
Midwaymonsters
New Member
6
Rep
22
Posts

Drives: 2013 BMW 535i
Join Date: Dec 2023
Location: Arkansas

iTrader: (0)

Quote:
Originally Posted by TZ View Post
Sorry, it's 348/30mm. I bought here https://www.fcpeuro.com/products/bmw...nn-34116775277 and installed myself
Appreciate 0
      01-18-2024, 07:34 PM   #22
Conserve
Private First Class
180
Rep
125
Posts

Drives: 1976 BMW 2002 & 2015 BMW535i
Join Date: Sep 2023
Location: Ohio

iTrader: (0)

Midwaymonsters , any update? did you hear back from other shop/
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 06:45 PM.




5post
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