I'm trying to buy a road bike, but I look at the tires and see them as too skinny, is there a weight limit on the tires, and is it harder to control than a mountain bike, I usually ride montain bikes offroad, but now that I'm in a city I need to get a road bike, I'm looking at bontrager type wheels since I see them on every bike in the store, but my questions were asked, is there a weight limit, and is it harder to control/balance on a road bike because of the skinny wheels, thanks.