'06 LT Rear Brake Rotor - BMW Luxury Touring Community
 
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post #1 of 20 Old Dec 10th, 2005, 6:15 pm Thread Starter
 
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'06 LT Rear Brake Rotor

Hi, Guys and Gals -

I certainly qualify as the least-informed member here, on LT-related issues, just having bought my first BMW in my life, an '06 LT.

Would someone knowledgable please help me with an answer? My bike still has less than 1,000 miles on it. Today, before going for a ride, I noticed that the rear brake rotor has a small amount of lateral play, all the way around it. I can shake it side to side, and it moves, maybe .025". Is that right? I've never seen a brake rotor installation where the rotor is designed to float.

I also get some brake squeal, which I've noted here as somewhat characteristic, but what about the rotor movement. Do I have a problem?
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post #2 of 20 Old Dec 10th, 2005, 7:08 pm
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Nope, it's designed to float. If you look closely, you'll see that the calipers are mounted solid, so the rotor needs some play to work well. The front rotors float as well, but usually not as much as the rear.

The squealing is annoying, but well documented. Don't baby the rear brake, but use it firmly when needed.

Ken
Pacific NorthWet
'13 Dark Graphite Metallic K16GTLD, 24K miles
'09 Magnesium Beige Metallic K13GT, 63K miles
'03 Anthracite Metallic K12LTC, 66K miles
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#143, IBA# 366, MOA# 111996, SCMA# 24032


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post #3 of 20 Old Dec 10th, 2005, 7:14 pm
 
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Thumbs down

Really disappointing to hear that this problem, which has now been present for at least 6 model years has not been taken care of by BMW.

You should have a lateral play in the rotor, but no squeal. My dealer also informed me that the rotors usually start to rattle at or around 6'K miles, which is in line with what mine does too.

The dealer also replace it and pads promptly under warranty when it does.

Annoying for me, expensive for BMW and I hope it is annoying for them too

Stefan
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post #4 of 20 Old Dec 10th, 2005, 8:00 pm Thread Starter
 
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Quote:
Originally Posted by meese
Nope, it's designed to float. If you look closely, you'll see that the calipers are mounted solid, so the rotor needs some play to work well. The front rotors float as well, but usually not as much as the rear.

The squealing is annoying, but well documented. Don't baby the rear brake, but use it firmly when needed.
Thanks very much for the advice, Ken. It's reassuring to know I'm not faced with a safety issue. I can't get any movement in the front rotors at all. I did check them. I'll use the rear brakes as required.

Quote:
Originally Posted by stefan
Really disappointing to hear that this problem, which has now been present for at least 6 model years has not been taken care of by BMW.
You should have a lateral play in the rotor, but no squeal. My dealer also informed me that the rotors usually start to rattle at or around 6'K miles, which is in line with what mine does too. The dealer also replace it and pads promptly under warranty when it does. Annoying for me, expensive for BMW and I hope it is annoying for them too
Stefan, thanks for the info, although not what I'd rather hear. I'll be keeping a close eye on things, and will bring anything that seems suspect to the attention of my dealer. Thanks again for the input.
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post #5 of 20 Old Dec 10th, 2005, 8:34 pm
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Do not be concerned until you here the rotor rattle. Replace it if the sound bothers you.
Pete
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post #6 of 20 Old Dec 10th, 2005, 11:18 pm
 
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CM, as all have said you have no problem, some rattle a little more than others, no big deal.....

What dealer are you using?? where are you at??..........Regards Pete
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post #7 of 20 Old Dec 11th, 2005, 12:48 am
 
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Exclamation And what pads do we use?!

Repeat after me, "EBC pads in the rear, OEMs up front.".

...and repeat:

EBC pads in the rear, OEMs up front.


...and repeat:

EBC pads in the rear, OEMs up front.

...and repeat:

EBC pads in the rear, OEMs up front.

...and repeat:

EBC pads in the rear, OEMs up front.

...and repeat:

EBC pads in the rear, OEMs up front.

...and repeat:

EBC pads in the rear, OEMs up front.





You'll thank me later.
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post #8 of 20 Old Dec 11th, 2005, 2:00 am Thread Starter
 
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Quote:
Originally Posted by petepeterson
What dealer are you using?? where are you at??..........Regards Pete
I'm near San Antonio, Pete. Dealing with Alamo BMW. Open to alternate suggestions far as who does good work around here, although I'm gonna' need to stay with someone authorized to do warranty-level stuff a while.

Dave P
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post #9 of 20 Old Dec 11th, 2005, 7:56 am
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Joe, was that EBC on the front or rear? LOL

Dave, the floating rotor is normal (supposed to be floating), the noise shouldn't be, but is! Like Joe said...........................

Brett
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post #10 of 20 Old Dec 11th, 2005, 8:20 am
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I believe it was ABC pads on the rear, and DEF pads on the front. Yeah, that's it.

Ken
Pacific NorthWet
'13 Dark Graphite Metallic K16GTLD, 24K miles
'09 Magnesium Beige Metallic K13GT, 63K miles
'03 Anthracite Metallic K12LTC, 66K miles
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#143, IBA# 366, MOA# 111996, SCMA# 24032


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post #11 of 20 Old Dec 11th, 2005, 10:59 am
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Ok Joe, WHICH EBC pads ?:
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post #12 of 20 Old Dec 11th, 2005, 1:38 pm
 
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Exclamation EBC rear pad part number! FA304HH

Quote:
Originally Posted by simoncharles
Ok Joe, WHICH EBC pads ?:
The EBC pads for the rear are part number: FA304HH

(I found that part number by clicking on the "Technical" link above, then "Accessories", then "Service Items". Scroll down to the "Tires, Suspension, & Brakes" section. A very handy tool!)
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post #13 of 20 Old Dec 11th, 2005, 6:35 pm Thread Starter
 
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Are these the ones that have to have the "a la Sayegh" corners ground off, or are they something that fits without alteration?
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post #14 of 20 Old Dec 11th, 2005, 7:04 pm
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Quote:
Originally Posted by CriticalMass
Are these the ones that have to have the "a la Sayegh" corners ground off, or are they something that fits without alteration?
The Ducati pads that you grind the corners off are FA244HH.

Mark Neblett
Fairfax, VA
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post #15 of 20 Old Dec 12th, 2005, 5:26 am
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Thanks.
I was a bit confused about the Ducati pads as well.
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post #16 of 20 Old Dec 12th, 2005, 7:26 am
 
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Don't be confused . . . just don't buy them.
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post #17 of 20 Old Dec 12th, 2005, 7:33 am
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Quote:
Originally Posted by messenger13
Don't be confused . . . just don't buy them.
Why not? If FA304HH's aren't available, a couple quick hits on the corners with a grinder turn the 244's into 304's -- perfectly useful.

Mark Neblett
Fairfax, VA
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post #18 of 20 Old Dec 12th, 2005, 7:45 am
 
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Cool We don't need no stinkin' part numbers!

Yea...I guess my comment is directed to those who actually think ahead and order their pads in advance. But for those who replace their pads on a monent's notice and then find that the "correct" pads aren't available . . . at that point, any port in the storm. Sorry. I should've specified to whom I was speaking.

I guess just about any part would work on any bike if you're willing to 'put the dremel to it' to make it fit.
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post #19 of 20 Old Dec 12th, 2005, 7:50 am
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Quote:
Originally Posted by messenger13
Yea...I guess my comment is directed to those who actually think ahead and order their pads in advance.
Plan head?? -- hey! that's *way* too rational

Just making sure it was clear that the 244's were not an absolute no-go.

Mark Neblett
Fairfax, VA
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post #20 of 20 Old Dec 12th, 2005, 8:38 am
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Quote:
Originally Posted by mneblett
Plan head?? -- hey! that's *way* too rational

Just making sure it was clear that the 244's were not an absolute no-go.
Besides, you only have to grind the corners on one of the 244 pads. I usually just keep a spare set of pads in the garage, because invariably I'll be heading out on a long trip and think "maybe I better check the brake pads, oops."

Ken
Pacific NorthWet
'13 Dark Graphite Metallic K16GTLD, 24K miles
'09 Magnesium Beige Metallic K13GT, 63K miles
'03 Anthracite Metallic K12LTC, 66K miles
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#143, IBA# 366, MOA# 111996, SCMA# 24032


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