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Discussion Starter · #1 ·
I'm coming up on 400 miles on my new 2015 V 650 and the brakes occasionally make a groaning sound. That's the best I can describe it. It's like the rotors are rubbing against the pads when not in use. It's intermittent, though. It has done this since new and the dealer said it would go away once the brakes were worn in. Not so sure. Anyone else experiencing this?
 

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I did until about 500 miles. I finally rode up 75 and then romped on the brakes a few times... last I heard of the groan.
 

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Hello,

Try driving the bike for a little bit and toward the end of the ride avoid using the brake in question (if both are making noise then just use 1), once you park & dismount, give the brake rotor that you wern't using a touch...

If the rotor is hot to the touch, you've got problems... if its warm or cool, I wouldn't worry about it.

My 15' LT has a bit of a groan to it also, I really only hear it when decellerating for a light or something, figured it was a little resonence noise from the front sprocket area.
 

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I thought it was coming from the front but when I applied rear braking - the sound disappeared. After using the rear brake a bit more than usual it disappeared until the 600 mile maintenance - it's back now (darn them for adjusting things back to spec!!). I noticed that after a few carefully applied firm rear brakings, it quieted down again.
 

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It's perfectly normal. The piston in the caliper pushes the pads into the rotor, when you release the lever the fluid returns to the master cylinder and the piston retracts just a little bit, but there is no spring to make the pads and caliper return, so they drag on the rotor.
 

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It's perfectly normal. The piston in the caliper pushes the pads into the rotor, when you release the lever the fluid returns to the master cylinder and the piston retracts just a little bit, but there is no spring to make the pads and caliper return, so they drag on the rotor.
I have recorded this for prosperity so you can sue Tod if you have an accident now.
 

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Rear brake caliper, caliper holder, pads, and rotor were changed for 2015... No such problems with 2007 to 2014 models. It is possible to retrograde. Problem does seem to be a warped rotor.

"The rear (brake) on my (2015) test bike made an intermittent annoying whiny squeak when applied, and occasionally when not. When my foot was on the pedal, I could feel an accompanying vibration through it (warped rotor). No doubt it's an issue with the particular bike I rode." :rolleyes:

http://www.visordown.com/road-tests...ki-versys-650-review/26203.html#ixzz3di0nYRk9

2014:



2015:

 

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Discussion Starter · #14 ·
Well, I took the wheel into the dealer and OF COURSE, their response was that they could not find anything wrong with the rotor. LOL!
 

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Did they remove the rotor from the wheel and put it on a flat plate of steel or glass? That will tell the story, any warp can be detected with feeler gauges.

I also wonder, from the sound on the video, if it is something on the rotor itself. Did you clean everything thoroughly with brake cleaner, wipe with a clean rag and repeat? I know the sound of a brake pad rubbing a disc, and it sure doesn't make that sound. Not convinced that the rotor is warped, but explore all possibilities.

I terms of brake performance, does the brake 'grab' or pulsate when applied?
 

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they need to check the brake runout with a caliper while the tire and rotor is mounted on the bike.

here is a video showing how it should be done. (not mine though)

https://www.youtube.com/watch?v=Xg8v7wDvs_w

you can do a rough runout by mounting something on the swingarm against the brake rotor to see visually that it is warped.
 

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to me it sounds like hard un-even rubbing... if you have an extra set of pads paint the contact surface put them in apply the brakes a few times then spin the tire thru its noisy spot over and over then remove pads and it will show you were its rubbing by the removal of the paint
 

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I brought my 2015 650LT in for the same noise. I was told that the brakes were "not properly worn in" and that the pads were "glazed" and that's what was causing the noise. They said that they "cleaned the rotor and pads and properly wore them in". I will be the first to admit that I am mechanically challenged but, this sounds strange to me. What do you folks think?
 

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I brought my 2015 650LT in for the same noise. I was told that the brakes were "not properly worn in" and that the pads were "glazed" and that's what was causing the noise. They said that they "cleaned the rotor and pads and properly wore them in". I will be the first to admit that I am mechanically challenged but, this sounds strange to me. What do you folks think?
I don't know about the noise, but - YES - brakes need to be 'broken-in'. Important to TRY to be gentle w/ them at first, till they 'wear-in' to the discs.
 

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I brought my 2015 650LT in for the same noise. I was told that the brakes were "not properly worn in" and that the pads were "glazed" and that's what was causing the noise. They said that they "cleaned the rotor and pads and properly wore them in". I will be the first to admit that I am mechanically challenged but, this sounds strange to me. What do you folks think?
Hogwash... I think you'll find out your rotor is still warped, and you still have the same symptoms.
 
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