Originally Posted by cyccommute

Everyone seems to want to find a nefarious reason for sloping top tubes. Often people say "they went to sloping top tubes so that they could offer fewer frame sizes," but the number of frame sizes offered remained the same or actually increased. This one is kind of new but geometry comparisons don't hold up. Sloping top tubes are used to get a little more stand over height with a slightly stiffer frame and a bit of weight savings. Sure, it saves the companies a little money in materials as well but that's not a bad trade-off.