Thread: 1200S Discs...
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Old 29-10-2020, 01:11 AM   #9
utopia
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Join Date: Jun 2010
Location: leicester
Bike: M750
Posts: 4,545
I had the same mild pulsing at slow speed for quite some time on my 750. ...you may have read this before on earlier threads.
I seem to remember getting consecutive mot advisories about the pulsing for two or three years.
I checked them for runout and they were damn near perfect.
The pulsing was eventually cured by basically the method that Gazza described .. though it was a bit more convoluted than that and took me a while longer than it should have.
I was first alerted to the "cure" when I did the UKMOC trackday at Mallory in 2011 during which I gave the brakes a much more serious pounding than I ever do on the road.
Lo and behold, on my ride home the pulsing was dramatically reduced.
Anyway, upshot is that I have the very same discs on the bike to this day (and believe it or not, the same pads too) and there has been no hint of pulsing for the last 20,000 miles or so.

I can definitely recommend giving your existing discs a good workout.
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