Known as The Original Muscle Car Wheel, the S/S line is our most popular custom wheel design. Since its creation by Roy Richter in the 1960s, its iconic style revolutionized the wheel industry. These unique, timeless wheels are the classics that started it all. CONSTRUCTION: 2-Piece Composite – Steel Rim with Aluminum Center. FIT: Direct Fit. OFFSET: RWD. CAP: Included.