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Join Date: Mar 2010
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Unhappy 1100RT rear brakes

HI all, new user here,, just found the site. having a problem with rear brake pads,,, original set lasted 70k miles, put in new set with a new rear mastercylinder, it was leaking,, cleaned and purged total brake system front and rear and abs. everthing worked great but new pads only lasted 6k miles ?? not draging or hanging.. another new set of pads,, this time lasted 6.2k miles. both sets oem from local dealer,, they dont have a clue either ?? not my first bike have 8 others and been doing my own maintainence since my first NSU in 1960 (anyone out there ever have one ??) anyone have any ideas on this,, or better pads ?? i ride 369 days a year .never had this problem before ?? thanks in advance for reading and any help !!
Old 03-03-2010, 09:29 PM
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Location: Bellevue WA
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With the bike on the center stand, how's the rear brake drag? If you go for a ride and don't touch the rear brake, is the disc hot when you stop? Was the new rear master cylinder stock? Why was it changed? Did it change the "unpressed height" of the rear brake pedal such that either the pedal range limit stops or perhaps even your own foot is constantly keeping the rear brake slightly applied?

70K rear brake pad life is out of bounds high (someone who almost never touches the rear brake) and 6K is very low (consistent with an over-user of the rear brakes - not terribly uncommon with many riders who drag the rears into corners as a security crutch). I'd think you might just be overusing the rear except that is inconsistent with the 70K. Did you put on these 70K?

- Mark

Last edited by markjenn; 03-04-2010 at 10:42 AM..
Old 03-04-2010, 10:38 AM
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Everything Mark said and questioned; ditto.

I actually went through them that fast in the early years of monster ownership, before I go the chassis well sorted and realized the rear wasn't going to do much for me anyway. 6k is very low, but not so low I'd expect much dragging to be involved.
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Old 03-04-2010, 11:14 AM
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Is there free play between the brake lever and master cylinder?
If not, the rear brake can drag.

As Mark asked...if the brake pedal height has changed......you might be unknowingly pushing the pedal down with your foot.

Try not to use the rear brake during a ride.....then check to see if the disc is warm/hot after the ride. If it is, you have a problem with the pads dragging.

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Last edited by Droptarotter; 03-04-2010 at 12:41 PM.. Reason: spelling
Old 03-04-2010, 12:40 PM
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Old 03-04-2010, 12:40 PM
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