For those who don't know, the history of Bmw M sport division starts back in 1985 when engineers placed the snarling, race-bred inline-6 engine from the M1 supercar into the production Bmw 5-Series sedan, reworked the suspension and brakes, and created the first M5.
Since then, several sports car wearing the M badge were produced and everything could continue smooth and easy but the German manufacturer wanted to change all this and decided to build the Bmw X5 M and X6 M, the first all-wheel-drive models to offer the remarkable performance, dynamic driving experience and athletic design. Both of the models will carry under the hood the newly-developed 4.4-liter V8 M capable to deliver 555 hp at 6,000 rpm and 500 lb-ft of torque (680 Nm) from 1500 to 5,650 rpm.
According to the manufacturer the new M engine is the world's first with a pulse-tuned exhaust manifold encompassing both rows of cylinders combined with high-performance twin-scroll twin turbo technology, so expect a new revolution in the car industry. The new vehicles can sprint to 60 mph from a standstill in 4.5 seconds and feature impressive delivery of power from the V8 twin-turbo engine which provides maximum torque of 500 lb-ft from 1,500 and 5,650 rpm.
The exterior design reflects the purpose of the vehicles: outstanding potential of both models is communicated clearly in their looks and design, their performance-bred heritage presented convincingly by the common design of the front end with its large air intakes. As you may know already the hood, front air dam, and headlights are virtually identical on the X5 M and X6 M.
Both vehicles feature now the special gills in the front fenders (a characteristic of the M division), as well as model- specific 20-inch light-alloy wheels. Also the rear reflects the athletic character of each model: rear diffuser on each model communicates a particularly powerful presence, and the quad tailpipes of the exhaust system are again a signature of Bmw M's masterful work. The first modern turbocharged M engine: twin scroll twin turbo technology with a patented exhaust manifold.
Using BMW's innovative, 4.4L reverse-flow V8 engine with High Precision Direct Injection and twin turbochargers as a basis, the new M engine introduces twin-scroll twin turbochargers and patented exhaust manifold technologies to achieve outstanding thrust and pulling force, while preserving the most compact dimensions possible. Two low-mass twin-scroll turbochargers are positioned together with the catalytic converters in the section between the two banks of cylinders. By reversing the flow of gases through the engine from traditional arrangements, the intake and exhaust ducts are shortened and widened. The result is that pressure losses on the exhaust side are minimized.
The goals: virtually eliminate turbocharger lag while maximizing combustion efficiency and power output. Tremendous power and performance are delivered by the engine in the BMW X5 M and BMW X6 M through a new design and construction principle. The new M V8 engine with twin-scroll twin turbo technology uses a single exhaust manifold with tuned-length runners, incorporating both cylinder banks and connecting cylinders in carefully-selected pairs.
This configuration, patented by BMW M and known as Cylinder-bank. The X5 and X6 feature the M Sports Automatic and M shift paddles on the steering wheel. A premiere is also the 6-speed M Sports Automatic transmission, featured for the first time on a Bmw M model which offers the driver not only the Drive mode, but also Sport and M Manual modes for absolute control of gear selection The suspension developed specifically for the BMW X5 M and BMW X6 M with its double-wishbone front control arms and integral four-link rear axle offers M- specific geometry and damping. This is accomplished through optimized control arm and A-arm bushings at the front, as well as stiffer axle support mounts at the rear.
Of course, the vehicles must stop in time and this is guaranteed by the high-performance M brake system, which combines giant four-piston fixed calipers at the front with floating calipers at the rear, combined in each case with large, internally-vented lightweight brake discs. The brake rotors themselves measure 15.6 in diameter at front and 15.2 at rear. They feature a riveted connection to join the aluminum rotor hats with the cast-iron rotor discs. As we said at the beginning of the article, the vehicles come with 20-inch light-alloy wheels fitted with high-performance tires in sizes 275/40 R 20 at the front and 315/35 R 20 at the rear M-specific cockpit and sophisticated driver assistance systems for even greater ability at the wheel.
The BMW M philosophy naturally continues into the design and configuration of the driver's office.Both of these all-wheel-drive high-performance sports vehicles come with a special M cockpit with the instrument cluster featuring a variable redline, specific vehicle function displays, and white display backlighting. Both the BMW X5 M and the BMW X6 M feature power, heated front M sport seats, an M sport leather steering wheel, M door sills, and driver's footrest. Infotainment functions, standard on-board Navigation with Real-Time Traffic data and communication functions are all controlled by BMW's 4th-generation iDrive. The standard HiFi audio system features 12 loudspeakers and a 230 watt amplifier.
In addition, both the BMW X5 M and the BMW X6 M may be equipped with a Head-Up Display programmed specifically by BMW M. This option enables the driver to customize the type and scope of data projected onto the windshield through settings available in the M Drive menu. Innovative driver assistance systems are fitted as well, with both models featuring standard Dynamic Cruise Control, Rain Sensor, Auto-Dimming Mirrors, Park Distance Control, and BMW's Xenon Adaptive Headlights. The list of optional features includes a Driver Assistance Package which includes High-Beam Assistant, Head-Up Display, and Rear View Camera with the spectacular new Top View feature. Top View provides the driver with an birds-eye view of the vehicle on the iDrive control screen, using input from a camera on each side of the vehicle and the traditional rear-view camera. Top View provides the driver with additional confidence for tight parking scenarios.