Theophilus Posted February 22, 2007 Share Posted February 22, 2007 I have a 2000 R1100RT, bought in October 2006. Clock currently shows approximately 34k. This is my first bike, and has been a joy (and sometimes a handfull) thus far. After being told by my friendly BMW service manager that my front brake rotors were thin and needed replacing, I measured them myself at several locations and found that I was much closer to 5 mm (the new thickness) than to 4.5 mm (the minimum, or limit, thickness) on both front rotors. My bike is an R1100RT, so it has the floating rotors with bobbins. When I told him the rotors were not thin, he said they were loose and said the only fix for that was to replace the entire rotor assembly, and that the bobbins were "press-fit" at the factory or some such explanation. After reading the myriad posts here regarding bobbin replacement, I am less than happy with the information I am getting from the BMW man. When I pointed out that the bobbins are indeed replaceable, he then said that none of his mechanics would do the job because it would be a potential safety hazard. Apparently, the claim is that the carrier wears as well as the bobbins, and the right thing to do is replace the whole assembly. Since I have lost almost no meat from my rotor wear surfaces, I am reluctant to do this and am considering replacing the bobbins myself, although I have never wrenched on a motorcycle in my life. This newbie would be interested in any insight regarding the potential safety aspects; I have already read enough posts to know that the job is very do-able, where to order the parts, what to expect, etc. What I did not find was a safety-based discussion, and that is my particular interest in this case. Link to comment
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