I have a 2007 Ultra with 29k miles. On the highway(I95) bike rides normal at 70-75 mph but going at 80 or more bike becomes squirrelly and on decel it starts to wobble. Replaced the tires thinking they were the issue.New rear tire less than a month old(Shinko 777) and new front tire(Mich Cmdr)days old. Same problem. Checked brake pads and rotors were fine. Took to dealer and was diagnosed as steering nut needs to be adjusted($200) Also was told tire was mounted wrong meaning the tread direction was correct but the valve stem is on the left instead of the right. Was told not a safety issue but not standard. Since I took off the wheel and had another dealer install prior to this service, they were not going to correct it free of charge. No mention if the wheel bearings were bad. Ok, I get on the freeway and accel to about 80 83 mph the bike started the dancing again and roll off the throttle it got worse. Got home and took off wheel to take back to dealer to correct the tire mounting and will see what happens on a 150 mile ride... Any ideas or solutions to this problem??

 

Wobble help?

Don't drink so much.

 

Check steering head bearing tension and motor mounts.

 

Look up True Track frame stabilizer. I put one on my 2008 EGU that had that same problem and solved the problem and rode like a new bike with no wobbles. That death wobble was very prominent on '07's and '08's. Good luck.

 

My first thought was motor mounts.

 

Steering head is what the dealer said. What is wrong with that advice? Since you are taking the wheel off anyway check the front wheel bearings.

 

No problem, change rear tire, now wobble problem...and the tire wasn't mounted correctly?

I'd start there first. Just say'n...

 

 

I like the Kiss method,
start at the rear. Less guessing.
Swing arms are a known issue (bushings)

 

Did you have the steering head adjusted, or just stop at the diagnosis?