Rear brake rotor loose? - BMW Luxury Touring Community
 
LinkBack Thread Tools Display Modes
post #1 of 9 Old Sep 4th, 2011, 2:15 pm Thread Starter
Member
 
mechanic's Avatar
 
Join Date: Sep 2011
Location: TAMPA, FLORIDA, USA
Posts: 64
Rear brake rotor loose?

Hi guys, just kicked my back tire this morning with my boots and heard a rattle, turns out is coming from a slight side to side play on the rear brake rotor. The rim, abs ring and everything else is tight, is this supposed to be like this? Thanks for your response in advance.
mechanic is offline  
Sponsored Links
Advertisement
 
post #2 of 9 Old Sep 4th, 2011, 2:26 pm
Senior Member
 
gbob's Avatar
 
Join Date: Sep 2006
Location: Nevada, MO, USA
Posts: 461
Re: Rear brake rotor loose?

Hello Mechanic

Yes it is , it is a floating rotor brake system . When it worn out you can replace with an EBC rotor < $ but not so rust resistant as OE , not a functional problem just looks issue after rain or washing .

Bob G
gbob is offline  
post #3 of 9 Old Sep 4th, 2011, 2:30 pm Thread Starter
Member
 
mechanic's Avatar
 
Join Date: Sep 2011
Location: TAMPA, FLORIDA, USA
Posts: 64
Re: Rear brake rotor loose?

Thanks gbob, almost dirty my pants when I saw this play.
mechanic is offline  
 
post #4 of 9 Old Sep 4th, 2011, 2:43 pm
Senior Member
 
AlaskaFish's Avatar
 
Join Date: Apr 2002
Location: Hillsboro, OR, USA
Posts: 3,136
Wink Re: Rear brake rotor loose?

This floating rotor can get loose enough to give you the famous "Cowbell" sound coming from the rear, and it quite embarrassing, but still quite functional. If you search under the "Cowbell" term you should get quite a few hits!

Welcome to our forum!

John

John & Marilyn Fisher
'00 K1200LTC "Katie"
'95 Triumph "Tigger"
'12 Triumph 800XC "Tigger II" (RIP)
'12 Triumph 1200 Explorer "Shadow Tigger"
Hillsboro, Oregon

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
AlaskaFish is offline  
post #5 of 9 Old Sep 4th, 2011, 2:53 pm
Member
 
Harold-NY's Avatar
 
Join Date: Oct 2008
Location: Brookville, NY, USA
Posts: 39
Re: Rear brake rotor loose?

Hi, I have a 2005 LT with 43,000 miles. My rotor made noise since 11,000 miles on the odometer. Two months ago I could no longer take people asking me what the cow bell sound was so I deceided to fix it. I went to the dealer and asked if it was a recall issue. They said no. They quoted me a price of $712.00 to replace it. I ended fixing it myself. I recalled reading that someone tried fixing it with silicone so I removed the rotor, cleaned it up really well. Set it on my shop table and aligned the rotor center on the hub and turned it clockwise so that the rotor was pressing against the rivits. This ensured that when the brake is applied the stopping force would be against the rivits. It is important that the rotor lays flat against the hub. You do not want any wobble (run out) when the rotor rotates or else it will rub against the brake pads. I then filled the gap around each rivit with a drop of GE Silicone. I let it set for 24 hrs. Reinstalled the rotor. 2500 miles later the rotor is still quiet and working great. I am very happy with the results. Harold

'05 K1200 LT
93 R100 gspd
'94 Honda PC800
'76 BMW R75
'76 Suzuki GT500
'69 Benz 280SL
Harold-NY is offline  
post #6 of 9 Old Sep 4th, 2011, 6:28 pm
Senior Member
 
bowdon's Avatar
 
Join Date: Jun 2007
Location: St-Lazare, Quebec, Canada
Posts: 514
Re: Rear brake rotor loose?

Quote:
Originally Posted by Harold-NY
Hi, I have a 2005 LT with 43,000 miles. My rotor made noise since 11,000 miles on the odometer. Two months ago I could no longer take people asking me what the cow bell sound was so I deceided to fix it. I went to the dealer and asked if it was a recall issue. They said no. They quoted me a price of $712.00 to replace it. I ended fixing it myself. I recalled reading that someone tried fixing it with silicone so I removed the rotor, cleaned it up really well. Set it on my shop table and aligned the rotor center on the hub and turned it clockwise so that the rotor was pressing against the rivits. This ensured that when the brake is applied the stopping force would be against the rivits. It is important that the rotor lays flat against the hub. You do not want any wobble (run out) when the rotor rotates or else it will rub against the brake pads. I then filled the gap around each rivit with a drop of GE Silicone. I let it set for 24 hrs. Reinstalled the rotor. 2500 miles later the rotor is still quiet and working great. I am very happy with the results. Harold
Harold-NY;

Did you take pictures of how you did the work? My 2005 has 39,000 and started making the same noise about 3,000 miles ago.
Let me know, I might do the "fix" this week.

Regards,
Bowdon
bowdon is offline  
post #7 of 9 Old Sep 4th, 2011, 8:34 pm
Member
 
Harold-NY's Avatar
 
Join Date: Oct 2008
Location: Brookville, NY, USA
Posts: 39
Re: Rear brake rotor loose?

Sorry, no photo's. It was a pretty simple fix. If is does not work I just saw a EBC new rotor at Beemer boneyard on sale for $155.00. The 3 important things to remember are 1) Turning the rotor clockwise while you hold the hub tight. This sets the rotor against the correct side of the rivits, same side as when you apply the brakes. If you put it against the opposite side of the rivits then the silicone would be forced out when you appliy heavy braking pressure. 2) My rotor had play in 2 directions circular and vertical. When on the bench I measured from the center of the hub to the outside rotor circumfence at 6 differnt points to insure rotor was centered (vertical movement). 3) Make sure rotor to hub surface is clean as possible to insure it lays flat against the hub. This will make the rotor spin true ( as best as it can). Like I said, I had nothing to lose because I was about to buy a new rotor anyway. I am very happy with the results. Good luck with your fix.

'05 K1200 LT
93 R100 gspd
'94 Honda PC800
'76 BMW R75
'76 Suzuki GT500
'69 Benz 280SL
Harold-NY is offline  
post #8 of 9 Old Sep 5th, 2011, 11:13 am
Member
 
Join Date: May 2011
Location: , ,
Posts: 33
Re: Rear brake rotor loose?

Quote:
Originally Posted by mechanic
Hi guys, just kicked my back tire this morning with my boots and heard a rattle, turns out is coming from a slight side to side play on the rear brake rotor. The rim, abs ring and everything else is tight, is this supposed to be like this? Thanks for your response in advance.
The OEM rear disc is junk. Replace it with an EBC and forget about it.

I've done this on 2 k1200's and never regretted it. (And in fact loved the change)

Trying to make the OEM junk work is a waste of time. I just did my new K12LT with only 11000 miles. The OEM disc looks like new but is already getting loose.

Anyone stuck on the OEM disc, I'll sell them mine cheap.

2006 K1200LT Ocean Blue and Gray (current)
2002 K1200LT (totaled)

Italos is offline  
post #9 of 9 Old Sep 6th, 2011, 11:02 pm
Senior Member
 
Motomadman's Avatar
 
Join Date: Jun 2003
Location: Camarillo, CA, USA
Posts: 470
Re: Rear brake rotor loose?

How much for your rotor?

Craig Hutchison
02 Pac Blue (Aka Blue Ox)
34 14 12.63 N
119 01 21.64 W

Why coast through Life when you can Corner it.
Motomadman is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the BMW Luxury Touring Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Lowering the rear brake pedal lemiller K1200LT 14 May 20th, 2012 10:34 am
Rear Brake Creep on 2002 LT beemer02 K1200LT 4 Mar 15th, 2010 12:19 pm
Rear Brake Reservoir Hollywood K1200LT 10 Oct 20th, 2009 12:49 pm
Hot rear brake rotor kamike K1200LT 10 May 1st, 2006 10:18 am
Drilled rear brake rotor???? DRothermel K1200LT 10 Apr 7th, 2006 1:01 pm

Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome