With standard Quattro all-wheel drive and a rigid chassis, the Audi S4 handled the twists, turns, and whoop-de-doos of California Highway 58 without fanfare. Pitch the car into a hairpin at twice the posted speed and there’s a hint of understeer as the 235/40ZR18 Michelin Pilot Sports grapple with all the weight over the front end, but stab the throttle at the apex and the S4 gathers itself up and exits with grace and agility. Around town, the ride is stiff and the Servotronic steering light and effortless, which is not to be confused with numb and senseless. Parking is a snap thanks to a tight turning circle. The brakes are easy to modulate and bring the S4 to a quick and clean stop.