I'm 6'5" and about 310 lbs. A few months ago, I bought a mountain bike (Norco Bigfoot 22") and most days I ride 10-15 miles of trails, with a little tricky stuff here and there. I am getting fitter every day. At first, I was nervous about getting a bike, since some years ago I bent a steel frame rear wheel on my way up a hill, but I seem to be able to ride this bike hard. I had to replace the factory spokes with hand-made ones and go to a thick 2.125 tube in the rear wheel, to avoid pinch flats. Other than that, no problems. Now I'm thinking I'd like to try a road bike. Is it possible to get a production (that is, reasonably priced) bike that won't bend or break on me?