+1 - I wouldn't rely on the fact that the dealer was supposed to do this adjustment at the 1K service. It is part of the 1k service, but it's probably the most time consuming procedure on the list and the most likely to be skipped if they're in a hurry or not though.

 

Very good point. If it wasn't correct from the factory, that is a procedure a dealer might skip over. As I sit in a bar next door to a Harley dealer that seemed to have screwed up more than they fixed on my Ultra. It's under warranty, or that would be happening in my garage.

 

I bought it used at 1400 miles so I have no idea if it even had its 1k service. My tires were under inflated and that seemed to help it a bit. It sure rolled easier. I took it up to 90 again both before and after inflating the tires and [thankfully] didnt have any issues, but it seemed better once the pressure was up.

I could check the fall away, but Im not sure how exact I would be, I have only seen it done once. Still not sure about the steering head bearing, but I could adjust that if some can point me to a video or the like. Thanks

 

Invest in a steering damper

 

Tire might be out of balance,have the spokes if it is spokes been checked also,haven't read everyones responses.....

 

Sounds like under inflated tires was the problem. They do get a bit unstable at high speeds. The Sporty isn't designed for high speed. Mine never got unstable until around 105, but it get's pretty shaky at 105. I rarely exceed 80 on the Sporty, and it hits the rev limiter at 114.

 

2 days ago I had this same problem, or @ least sounds like the same symptoms. Only difference between it not happening 4 days ago & it happening 2 days ago is a new helmet. Could it really be the problem? I haven't had time to check it out yet. I have 1K miles. Thanks.

 

need to know more about the bike and its condition. but...

rear wheel bearings were a cause of a 90mph wobble on my bike. once.
swingarm bearings were the cause of an 85mph wobble on my bike. once.
high stiction in one fork tube were the cuase of a 75mph wobble on my bike. once.
new-looking bad front tire was the cause of a 70mph wobble on my bike. once.

if you're bike is stored outside, suspect your bearings.

 

If your new helmet is causing more noise, then yes it could be the cause. Noise is a much greater problem than is widely recognised and causes tension. That in turn makes us grip the bars tighter and can cause steering problems. Try wearing ear plugs to protect your hearing and if the problem goes away, you know that is the cause.

 

That would be foolish IMO.
A Sporty should not have front-end wobble at 70, 80 or even 90 MPH.
Installing a damper would at best, just mask the real problem.