And it’s on a high-speed road where the BMW is a consummate cruiser. It’s refined, the engine is hushed (it drones a little when it’s worked hard, but no more so than the S90’s motor) and the eight-speed automatic transmission is snappy and smooth. You almost never feel like it’s in the wrong gear for the situation. The car’s chassis balances performance, comfort and refinement similarly well. With the dampers in their softest setting, the BMW is smooth and controlled, absorbing cracks and crevices in the road with a relatively deft touch.