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Sportster Models 883, 883 Custom, 1200 Custom, 883L, 1200L, 1200S, 1200 Roadster, XR1200, and the Nightster.
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  #1  
Old 02-09-2012, 12:05 AM
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Default When to change the Brake rotors

1200 Custom. Its time to change my pads out. Whats the difference between Lyndall gold and the z pads? One more Q how do you know when you need new brake rotors? Has about 18500 miles.
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Old 02-09-2012, 12:34 AM
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Yes, I wouldn't mind knowing that myself.
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Old 02-09-2012, 02:47 AM
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The answer about rotors is that they should be replaced when they get below a certain thickness. That thickness is usually engraved on the rotor, so you should be able to see it on your bike's. In almost 40 years of riding disc brake bikes the only one's I have replaced because they needed replacement was due to a serious crack or being warped, not getting too thin. So you probably have a long long way to go yet!
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Old 02-22-2012, 12:52 PM
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Just take a look at them and see. Check for cracks, warping, pitting and anything else that shouldn't be there. Also if the brake rotor is excessively grooved it should probably be replaced as well.
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Old 12-30-2012, 07:40 PM
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Quote:
Originally Posted by grbrown View Post
The answer about rotors is that they should be replaced when they get below a certain thickness. That thickness is usually engraved on the rotor, so you should be able to see it on your bike's. In almost 40 years of riding disc brake bikes the only one's I have replaced because they needed replacement was due to a serious crack or being warped, not getting too thin. So you probably have a long long way to go yet!
Wait, are you saying you went below minimal thickness with no problems? Personally, with the recession STILL GOING ON in my venue, I'm kinda loathe to replace my rear that is .05" below minimal limit. Some grooving, but normal looking, no warp or cracks.
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Old 12-30-2012, 07:43 PM
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Wait, are you saying you went below minimal thickness with no problems? Personally, with the recession STILL GOING ON in my venue, I'm kinda loathe to replace my rear that is .05" below minimal limit. Some grooving, but normal looking, no warp or cracks.
If your pads still make proper contact with the rotor then you're fine. I'd replace 'em soon, though, personally.
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Old 12-30-2012, 08:02 PM
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Pads are reasonably new, sintered bronze for less dust (and I loved 'em on dirt bikes) which give me some grooving, but these are the 3rd set in 36k - we ride pretty hard at times, hit the twisties a lot. I was surprised to mike the rear tonight at .197
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Old 01-02-2013, 05:59 AM
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Quote:
Originally Posted by Quadancer View Post
Wait, are you saying you went below minimal thickness with no problems? Personally, with the recession STILL GOING ON in my venue, I'm kinda loathe to replace my rear that is .05" below minimal limit. Some grooving, but normal looking, no warp or cracks.
Whoa. No I didn't say that! The only rotors I have replaced, because I needed to, didn't get to minimum thickness, they cracked before they got there.
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Old 01-02-2013, 06:24 AM
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Thickness and grooves, cracks...i changed mine at about 55000 miles because the double sintered pads really ate the rotors up...it made a big positive difference...
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Old 01-02-2013, 07:49 PM
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Um, okay, but dirt bikes got me to believing in sintered pads, but we had mud as an escort. So, what pad have you settled on as your best? I still do stuff that requires heating up the discs and even a couple times the fluid to vanishing point. Oddly, no cracks, just grooves.
Excyooz the highjack.
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Old 01-02-2013, 07:49 PM
 
 
 
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brake, break, change, changing, davidson, front, harley, replace, replaced, replce, rotor, rotors


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