VIDEO: BMW X6M 555HP V8 Turbo on the Race Track

Here's some new video footage of BMW's M-badged X6 SAV on the race track. Like its X5M twin, the X6M comes with a new 4.4-liter twin - turbo V8 engine delivering a maximum output of 555 horsepower and a peak torque of 680Nm or 501-lbs/ft. Power is distributed to all four wheels through a six-speed automatic transmission with the Bavarian firm claiming that it's high-performance crossover accelerates from zero to 100km/h (62mph) in just 4.7 seconds. Hit the jump to watch the video or click here to read more about the X5M and X6M.

New BMW X6 xDrive35i and xDrive50i M Sport Packages Include Significant Power Upgrades

This fall will see the introduction of a new M Sport package for the BMW X6 xDrive35i and xDrive50i turbocharged gasoline models. What's interesting about this package is that, unlike other M Division kits that comprise mainly of styling upgrades and quite often slightly more aggressively tuned suspension and different wheels and tires, this one actually adds much in the way of performance.

More specifically, the M Sport Package sees the X6 xDrive35i gaining the same tweaked version of the 3.0-liter twin-turbocharged inline-six found on the 740i that produces 326HP at 5,800 rpm and 450Nm of peak torque from 1,500 to 4,500 rpm. That's an additional 20HP and 50Nm of torque compared to the standard X6 xDrive35i.

The X6 xDrive50i (damn those marketing folks at BMW and their over-complicated naming systems...) gets an even greater power boost as the 4.4-liter twin-turbo V8's output is lifted from 408HP to 446HP. In comparison, the new X6 M model's 4.4L V8 turbo makes 555 horsepower.

If we translated the German press release correctly (if not, we'll be much obliged if our German readers could take a look at it below and make any necessary corrections or/and additions), the M Sport Package for the X6 SAVs will also include a body kit, 20-inch alloy wheels and a sportier interior trim.

For the record, the vehicle pictured above is the 555HP X6 M variant as the Bavarian automaker did not disclose any photographs of the X6 with the M Sport Package.

BMW X5M and X6M with 555HP V8 Priced from $86,225 in the U.S.

BMW has put a price tag on its all-new M Division X5 and X6 sport crossovers that were revealed for the first time at this month's New York and Shanghai motorshows respectively. When the X5 M and X6 M arrive in BMW's U.S. dealerships this fall as 2010 model vehicles, they will retail for $86,225 and $89,725 respectively. The first ever X-Series M models are powered by a twin-turbocharged 4.4-liter V8 engine producing 555HP that accelerates both models from 0 to 60mph in 4.5 seconds. For more details and high-res photos, click here.

Video: BMW X5M and X6M Hit the Track and the Road

Time to get a taste of BMW's new X5M and X6M in action with the first official video clips of the sporty crossovers that are powered by a new 4.4-liter twin-turbocharged V8 engine producing a maximum output of 555 horsepower from 5,750–6,000 rpm. The X5M and X6M videos include driving footage on the road and on the track as well as beauty -well, at least not in the literal sense of the word...- shots of the vehicles' interior and exterior.

BMW X5M and X6M Officially Revealed: 73 High-Res Photos of 555HP V8 Crossovers

It's the moment power-hungry crossover lovers have been waiting for; Munich has officially swiped the covers off its first ever M-prepped "X"models, the X5M and the X6M. Without any doubt, these are the most divisive models ever to wear the M badge. However, BMW vows that both crossovers feature all the typical sport characteristics one would expect from an M-badged model. Under the hood, this translates to an all-new 4.4-liter twin-turbocharged V8 engine that cranks out 555HP at 6,000 rpm and a whopping 680Nm or 501-lbs/ft of peak torque available between 1,500 and 5,650 rpm.

Those figures put to shame the M5's and M6's 5.0-liter naturally aspirated V10 that generates 507HP and 520Nm or 383-lbs/ft of peak torque. But no need to worry as from what our sources tell us, the new twin-scroll turbo V8 will replace the V10 in the next generation M5 and M6 models.

For the first time in a BMW M model, the X5M's and X6M's V8 is matted to a six-speed automatic transmission with shift paddles on the steering wheel. Both models retain BMW's intelligent xDrive all-wheel-drive system, though it has been revamped to distribute more power to the rear wheels.

In terms of performance, both M models accelerate to 100 km/h (62mph) from a standstill in 4.7 seconds and reach an electronically limited top speed of 250km/h (155mph) or 275km/h (171mph) with the optional "M Driver's Package".

BMW's M division engineers have also performed upgrades on the X5's and X6's suspension setup as well as on the Dynamic Performance Control, the Servotronic steering system and the brakes which now combine four-piston fixed calipers at the front with floating calipers at the rear, with internally-vented and larger discs.

Cosmetic changes are common for both models. On the outside they include a new bodykit that consists of new front and rear bumpers, rocker panels, side gills, quad exhaust tail pipes and 20-inch alloy wheels. Inside, the X5M and X6M feature the usual M-branded sport steering wheel and leather seats as well as a revised instrument panel.

BMW X5M PHOTOS

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BMW X6M PHOTOS