I experience a "slight" wobble around 45 MPH, and my bike also tends to "weave" around 75 - 80 MPH.
That being said, I've done short spurts of speed, sometimes up to 120 MPH indicated on the GPS, I've noticed the speedo is off by about 9 MPH compared to the GPS, and gets worse the faster you go.
This is my touring bike, not my speedster, until I figure out what is making it wobble and weave, I'll leave the high speed runs to my Buells.