Don't let your weight keep you from biking. As others have said, plenty of people are overweight (me included). I have foot, knee and shoulder problems that prevent me from doing most common forms of exercise, which is why I started biking. I'm heavier than you are, I ride a Trek 1500, and I put on my Lycra shorts (that make my legs look like sausages!) and head out to the bike paths. I am in deplorable physical shape, but I can ride my bike for an hour on a beautiful day, enjoying the beauty of the bike path and have a glorious time. Even when I seriously over exert and think I won't make it back to the car, I still love my bike! The beauty of biking is that those of us who are not athletes or have "issues" can still enjoy riding a bike. For me it is more about the enjoyment of the ride. The exercise from the experience is an added bonus. Get out there and enjoy yourself!