Under the 2007 Audi S8's skin is an impressive collection of sport-oriented hardware, such as a performance-tuned, load-leveling multi-link suspension that can be adjusted on-the-fly for firmness and a ride height lower than the base A8. There's also speed-sensitive rack-and-pinion steering that's 10 percent more responsive than the A8 application and the quattro system, which offers the slight rear-drive bias preferred by enthusiasts. Those folks will also appreciate the 20-inch alloys and 265/35 Z-rated performance tires, behind which is a four-wheel antilock disc braking system using ventilated rotors and bolstered by electronic brake force and electronic brake assistance technology.