60 MPH will be no problem for you downwind, downhill, and even maybe on the flat. It won't happen uphill, or into the wind. Also, I would say that at your height, the bike may seem a little small. I am only 5'10" and it seems a little small to me, but I really like that on some of the rocky trails I ride here in AZ. However, I do notice that an ache develops in my knees when I am riding on the highway due to my old age and the lack of highway bars on the TW. Others will have to give you the dimentions you are asking for as I am off to rehab.