TEST DRIVE: This week we take the Harley-Davidson Sportster Forty-Eight out for a spin. The Forty-Eight Roadster architecture boasts classic Harley Sportster style elements. The fat tires, cast aluminum 16-inch wired wheels and the emblematic, puny, steel peanut tank, chopped front fender and a retro circular speedometer. Short black handlebars with underbar mounted mirrors and a black, low, single seat.