Originally Posted by rdnakx250
I did a 150 mile round trip on my 600 Sunday. I was mostly going 65mph touching 70 once in a while. With 15/50 gears I got 53mpg. I have to sit waaay back on the seat to get it to ride stable at the highway speeds. Sitting close to the tank will produce some intermittant headshake.
Are your tires balanced? Mine was pretty rough at 65 until I put dynabeads in the tubes, now it's rock solid up to 70 or so and starts getting unstable above that.