I got my black pcx 150 about 2 weeks ago. It's my first motorcycle or scooter - I bought it as a second vehicle just to goof off on - take to the gym (12 mile trip) and to work now and then. As of right now I am not comfortable going over 55 miles an hour on it - at that speed or any faster it doesn't feel safe, the wind really buffers you around and maybe it's just me getting used to the bike but I am definitely not comfortable going any faster than that right now. I have gotten it up to about 65 but that was for a brief time only. I am 5' 8" and 180 lbs. I only have 200 miles on it because it's been so damn hot and when it's not hot as hell it seems to be raining. Hopefully with more miles I can get more comfortable and give you a little more feedback I am really happy with the miles per gallon I seem to be getting about 70 miles per gallon right now which isn't bad, as I break in the engine I'm hoping to get near 100 which he claims to get.