Source: BMW
Launching the new M6, BMW M GmbH is proudly presenting the most dynamic and sporting rendition of the 6 Series Luxury Coupé. This makes BMW's large Coupé in the guise of the M6 one of the most beautiful cars in the world - and at the same time the most sophisticated and powerful 6 Series there has ever been: five liters engine capacity, 10 cylinders, 507 bhp (373 kW), 520 Newton-metres (383 lb-ft) maximum torque, and engine speed beyond the 8000 rpm limit.
Together with the outstanding, uncompromising suspension designed and built exclusively for sporting performance, this supreme power unit gives the BMW M6 all the qualities of a thoroughbred supersports. But unlike its competitors usually offering only two seats, the BMW M6 comes with all the space and comfort of a typical 2+2-seater, plus the luxurious features of a typical luxury performance BMW.
The success principle: True power in a discreet package.
The BMW M6 shares its supreme power unit with the BMW M5. Ever since being introduced in the M5, this engine has been acknowledged as the absolute benchmark, just as the M5 is the very epitome of the Sports Saloon.
Now, introducing even more superior performance data, the BMW M6 sets a new standard in the segment of high-performance 2+2-seater luxury sports cars. Creating this unique model, the engineers at BMW M GmbH have focused not only on the sheer power of the engine, but also on the weight
of the body and, as a result, the mass to be accelerated as quickly as possible on the road. Reducing weight to a sensible minimum, the M6 comes with all the driving dynamics required for the race track, while in terms of motoring comfort and equipment it is simply ideal for all roads the world over. Not least, the body design of the BMW M6 modified only discreetly versus the elegant look of the BMW Coupé comes with all the understatement so characteristic of all M Models as their elementary feature.
Interacting with the seven-speed SMG transmission, the magnificent chassis and suspension, the elegant body in innovative lightweight technology, as well as the wide range of luxury equipment, the ten-cylinder high-speed engine gives the customer a brand-new dimension in motoring performance. It is indeed difficult to find any genuine competitors to the M6, since all other more or less comparable cars are either all-out supersports or sports saloons far inferior in terms of agility. So given the car's innovative drive concept, a power-to-weight ratio even better than on the M5, as well as unique handling - and all this with all the everyday driving qualities of a large coupé - the engineers at BMW M GmbH rightly claim that the new BMW M6 truly comes in a class of its own.
V10 power unit running at racing speeds.
Sharing BMW's V10 power unit, the M5 and M6 come with one of the rare high-speed engines in regular saloon and coupé production. Within the entire BMW family, the V10 is indeed the most demanding engine in technical terms and, without doubt, the top performer in every respect.
Power and performance, however, are not everything. Rather, what really counts is a car's acceleration and driving dynamics on the road. And this depends, first, on the weight of a car and, second, on the thrust and power which actually goes to the drive wheels - which, in turn, is a result of engine torque and the overall transmission ratio. BMW's high-speed engine concept allows an optimum gearbox and final drive transmission ratio in all cases, thus guaranteeing impressive thrust and momentum on the road at all times.
From:
http://www.fast-autos.net/bmw/05bmwm6.html 
Finally ! 2005 BMW M6 Officially Unveiled ! 
. The M6 promises to be an even hotter performer than the M5, so they're really on a roll!
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