The 4-seat Aston Martin DB9 is the ultimate luxury GT, both in coupe and convertible Volante form. Underlying its many attributes is a chassis that delivers incredible stiffness. The car is also incredibly well-balanced, with weight distribution of 51/49 percent front to rear. The independent suspension features 3-stage adaptive damping, with Normal, Sport and Track modes providing corresponding levels of performance depending upon driver preference and driving conditions. Incredible stopping power comes courtesy of ventilated carbon ceramic brakes. The DB9 rides on 20-inch 5-spoke alloy wheels, with Z-rated Pirelli tires providing the grip. The DB9 Carbon rides on 10-spoke 20-inch wheels and includes exclusive exterior and interior carbon fiber accents, as well as premium leather upholstery with contrasting stitching. Other touches include brake calipers in yellow, red, gray or black. All DB9s are powered by an aluminum 6.0L V12, which produces 510 horsepower and 457 lb-ft of torque. The big engine is mated to a 6-speed automatic transmission with a limited-slip differential and delivers quite athletic performance, with 0?60 mph coming in just 4.6 seconds and a top speed of 183 mph. Standard equipment in the DB9 includes a full-grain leather interior with walnut and graphite accents, heated mirrors, automatic HID headlights, automatic temperature control, satellite navigation and satellite radio, front and rear parking sensors, a rearview camera, a premium audio system and a trunk-mounted umbrella. Optional equipment can take the DB9 to another level. This includes appearance features such as carbon fiber exterior accents and a range of 20-inch wheels, or interior pleasantries like a 1000-watt Bang & Olufsen stereo, exotic wood trims, a leather headliner, special seat embroidery, personalized sill plates and much more.