I just got some brand new tires on my '02 500r (Only has 5000 miles on her) and the other day just random I let go of the handlebars while cruising at around 45-50mph. I remember when I first got it that was fine, it would keep going straight as if I was still holding on.

This time, it started shaking, small at first, but growing with each shake so it scared me after about 2-3 seconds.

AW CRAP!!!

I did take the front and rear wheels off myself and took them in for new tires / balancing. I'm pretty competent with taking things apart and I'm sure I didn't do anything stupid like leave a part out, although I didn't have a manual or anything so I just put everything back on the way it came off and made sure things were "tight"

Any ideas on what is causing this head shake? If I hold on to the handlebars there's no discernable shake, but if I let go for a second or 2 it really starts shaking bad.

 

Wheels could not be balanced right. Tire could be out of round. I had a new one like that once. Take it back to the shop and have them check.

 

[sm=exactly.gif]good place to start.

 

To add some more info about this, it only seems to happen at speeds between 30mph - 45 mph... get it 50+ and the handlebars don't do it... so weird...

 

i'm sure it's out of balance then if it's only doing it at certian speeds.