Floating Front Rotors: Yes or No? - Page 2 - BMW S1000RR Forums: BMW Sportbike Forum
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Old 11-18-2012, 04:27 PM   #11 (permalink)
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Our rotors freely float. Take the bolts off and you'll see how the bushings are mounted.
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Old 11-18-2012, 06:44 PM   #12 (permalink)
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they float way more than the standard brembo rotors with buttons.
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Old 03-01-2013, 09:13 PM   #13 (permalink)
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I was concerned I had a loose steering head bearing but to my surprise its just the movement in the front rotors, mine move maybe a mill or so when cold, enough to make an audible click when rocking the bike with the front brake on, Or I can just grab the rotor and make it move slightly. All the screws are tight. Glad I read this before taking into the dealer to have them look at it. Thanks. Can anyone else move the rotor like mine? I have an 11 with 9500 miles
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Old 03-01-2013, 11:50 PM   #14 (permalink)
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Quote:
Originally Posted by beemdubu View Post
I was concerned I had a loose steering head bearing but to my surprise its just the movement in the front rotors, mine move maybe a mill or so when cold, enough to make an audible click when rocking the bike with the front brake on, Or I can just grab the rotor and make it move slightly. All the screws are tight. Glad I read this before taking into the dealer to have them look at it. Thanks. Can anyone else move the rotor like mine? I have an 11 with 9500 miles
Mines exactly the same. This is normal.
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Old 03-02-2013, 12:31 AM   #15 (permalink)
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Well Guys,

I'm getting a HP4 and it has Brembo floating rotors, so I won't have to wonder anymore if I have them or not. My understanding of a "floating" rotor, i.e. one on a hat with "buttons" was to allow some left to right movement of the disc, thereby promoting alignment with the fixed calipers on most motorcycles and to allow better radial expansion of the disc to help dissipate heat buildup.

The manner in which the standard rotors on the S1kRR "float" appears to me to be in a forward/rearward manner. At low speeds this sometimes produces a clicking noise, reminiscent of loose steering head bearings. While these may be floating rotors, they do not, in my estimation assist in the benefits of floating rotors as outlined above.

Can't wait to try the HP4

Curtis
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