Three-wheeled motorcycles are called trikes and they are gaining in popularity among older riders who can no longer manage a two-wheeler. Scottish comedian Billy Connolly is a devotee of the trike. They come in various forms with two wheels in front or back. There are customs, roadsters and conversions. There are also the traditional bikes with sidecars, called an “outfit”. MotorbikeWriter road tests trikes and outfits for performance, handling, value, comfort and economy.