Pulsing Brakes - OEM rim defective??

[Tifa]

Take offending disc off, put the wheel back into the bike, and check disc mating surface accuracy of wheel with a dial guage...to confirm tollerances, check the other side also.
While you're at it, I'd check the rim for accuracy too.

Also, do you have access to another wheel to compare?

[TimeBandit]

Ladies and gents, verdict is in …. it was the wheel !!! Could not confirm by measurement (dealer wouldn't measure it), but by process of elimination. I managed to get the dealer where I bought the bike to do a one-for-one rim swap off another barely used orange Tuono. Sadly I had to become "that guy"... you know... the difficult customer who is completely unreasonable. So in the end they appeased my wishes for a rim swap just to make me "go away". Really sad it had to come to that - even more sad I kinda expected it. But every cloud has a silver lining.... I was right! I got the bike home today and re-mounted my new BrakeTech's, repeated the "pencil test", and it hits every spoke on the carrier - aka rotates true and straight to the axel !!!! Here's a follow-up video (2-min) showing the same OEM carrier tracking straight now, followed by my BT's doing the same:




Being right is sweet justice for the hell I've been through - especially this past week arguing with the local dealer - whom did everything to evade measuring or validating the wheel dimensions despite the good measuring advice of the previous posters (thanks everyone). The sad part is that my OEM rotors are indeed verified crap too (as seen in this video - but only the disc, not the carrier) - most likely due to being mounted to an untrue wheel for over 9 months, and thus compounded whenever I removed and remounted them in a different position. Ironically this is part and partial the reason why I had to "fight" so hard with the dealer because their official diagnosis was stead-fast on just being a case of typical warped rotors. And while they were right in that my rotors were warped, they allowed that to blind them of anything else, not able to get past their own tunnel-vision and think outside the box for a moment in that my warped rotors were perhaps a symptom of a greater root-cause being an untrue wheel boss machining. What is more worse, because they still believe I was/am wrong/crazy, you can guess exactly where my "defective" rim is going to end up.

[asb2106]

poor tuono

good news though !

[GreaseSnake]

Good to hear, time to start enjoying your bike! =)

[ZiggyZA]

Ugh!!! , I have exactly the same problem with my 2008 RSV. I am annoyed that I'm going to have to be the guy at my dealership in South Africa that has to go through the whole process before I get another wheel or not. Problem is my bike was bought second hand, and while it was in perfect condition I have no warranty claim on it - even though this didn't help you or anyone else.
Will probably have to buy a new wheel myself.

I intend to do some trackdays with this bike, and when braking hard on the edge, a pulsing brake may cause the front to let go - and this thought is disconcerting.

Thanks for the help in identifying the problem. I would've probably changed the rotors first only to experience the same problem.
Cheers,
Ziggy