Let's talk about warped rotors - rear rotor in this case

[atokad]

I know there have been a lot of documented problems and discussions on front rotors, but has anyone ever noticed if their rear rotor is warped?

Had my wheel off to get a new tire on it and while assessing the re-install I was running the bike in first gear on the center stand just to see if everything looked OK and noticed a nice wobble in the rear rotor.  It's very apparent as the rear disc brake can clearly be seen moving in an out about 1 mm.

I meticulously checked the rear axle to make sure it was equally spaced on each side and the wobble is still there.  I have not road tested the bike yet to see if I can actually feel anything, but I doubt it.  It's not like a front wheel where one would feel the wobble through the handlebars.

So questions:

Anyone else encountered this?
Am I headed for "failure" of the rear disc brake if I don't fix it?

I tend to use a lot more rear brake than front (maybe why my fronts have never warped?) since I grew up riding dirt.  13k miles and I have yet to replace the front brake pads but I am almost done with my second set of rear brake pads.

So - let's hear it.

[KuzzinKenny]

Did you feel rear brake pedel judder before you got the raer tyre changed ??

if not, i would think its been done by the tyre fitter with there bead breakin machine !! squashin the disc instead of the rim !! just a thought !!

KK

ps i use the rear brake a lot too !!

pps what mod of Tigger is it ??

[TigerTrax]

Believe it or not . . .  it is the fronts that tend to warp.

Depending on the year Tiger you have. . . Triumph Tiger rotors are a POS.

Before you go to gaagaa, clean the rotor using a very lite emory cloth and cleaner. Residue from the brake pads can 'build-up' on the rotor if
the bike is left to sit while the pads/rotor are still hot. I actually found that on my '06. I dressed up the rotor and removed and cleaned up the pads...
I cleared much of my 'pulsing' on front brake . . . which I was certain the
rotors were warped badly. They are out of spec, but just a hair.

[atokad]

No rear brake shudder or pulsating prior to having the wheel off to fit a new tire.  I thought about the shop possible fudging up the rotor during dis/mounting the new tire, but I really can't believe that would be the case.

They are the Premier wheel/tire shop in Denver and for a thousand miles around.  http://www.woodyswheelworks.com/

So, I've yet to go ride it, since we had 20" of snow here on Weds/Thurs this week, the roads are a bit like rivers yet today with the 65 degree weather and sunshine we are having.  :D

[atokad]

Finally got the bike out for a test run. No pulsating, wobbling, chattering, nothing.

Feels totally normal. Anyone else put theirs on the center stand and run it in gear to watch the rear disc?

[PeteH]

The rear on my 885i is warped - picked up on the roller at MOT time, the only thing I can put it down to is riding while the rear caliper slider was siezed. Still rides ok with no noticable pulsing and the pads last a lot longer with cleaned and lubed sliders.