I get a high pitch twittering noise from bike at 60 mph

Go to tranny shop and see what they say About it Or the DEALER IS Next Don,t Forget to Say Please Can You Help Me Rember those words Or YA Could Be payin the BIG BUCK<S Ok

harmonic vibration from the wheel wobbling
could be suspension rubbers , failing bearings or the brake rotor vibrating in the callipers

I am having the same issue. Would love to know what resolved it for you?

You had best get the bike to a dealer for repairs. If the bike is making the sounds as you say, is is highly likely the tranny will self destruct at any moment > like at 60 mph in heavy traffic. You are risking your life if you continue to ride the bike.

I don't know what whosing sounds like, but I have a high pitched whirring noise coming from my somewhere in the engine bay, my noise starts when the car starts and continues while driving, goes away at around 60 mph but will come back when I accelerate or decelerate, I have a friend that is a master tech at volkswagen, he suspects the alternator is making the noise, this is my first TDI, I bought it with 150k on it, I don't have any experience with TDI's, but am a Service Advisor, and it has been my general experience that all volkswagens are posessed! :) Always having some sort of electrical issue, Not sure if that will help.... Good Luck!

forget the xbox, yo have tintinnus or tinnitus, you need to see a doctor ASAP i had this and it went away on its own but you can have it the rest of your life and there is no cure

It is at least one of your wheel bearings. I had all four of mine replaced before 40000 miles I hope that it is under warrantee

could be one of the diiferentials probably the rear. might be one of the pinion bearings

this sounds like maybe a U-joint froze in one direction because it only make noise under load

I had a high pitch noise, didn't sound like it came from the "underside". Turns out it was one of fans that had little chips in the blades? My Audi dealer replaced it, and it's fine now.