1991 Bmw M5 Base Sedan 4-door 3.6l on 2040-cars

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Check out the trick way you access the tire valve on this BMW Alpina B6

The wheels are one of the first things you notice when checking out the 2015 BMW Alpina B6 xDrive Gran Coupe. The 20-inch aluminum alloy rollers have 21 spokes that spray out from their hubs, creating one of Alpina's signature design features. But there's also plenty of function to go along with the stylistic form of this hotted-up BMW 6 Series Gran Coupe.
By rotating the Alpina roundel and unlocking the center hub, you gain access to the tire valve and bolts, which are hidden inside. They're literally kept under lock and key, and they protect your Alpina's wheels from the elements and theft. This unique center-fill system employing a hollow spoke isn't a new setup for the favored BMW tuner, but since Autoblog had one in our offices this week, we thought we'd take the opportunity to show the unique mechanism in case you haven't seen it before. Check it out in our brief video below.

Updated BMW X6 spied running the 'Ring in Germany

Following the debut of the X5 earlier this year, it shouldn't come as a shock that BMW is testing an updated X6 in its homeland. The Munich-based manufacturer trekked to the Nürburgring to test the lifted, four-door coupe it calls a Sports Activity Vehicle, while also giving us our first peak as to what the future holds for one of the weirder models in the brand's stable.
Mainly, we can safely expect the next X6 to get the same range of refinements made to its platform-mate, the X5, which debuted earlier this year. If we're lucky, that could mean an X6 sDrive35i, complete with rear-wheel drive with which to fling the big SAV about. Adding a rear-drive option could also broaden its admittedly limited appeal by lowering the cost of entry, which could serve the pricier X6 well. As a point of reference, the X5 sDrive35i is priced at $2,300 below an xDrive all-wheel-drive-equipped model.
The X6's top-flight xDrive50i model should get the same 45-horsepower bump as the X5 xDrive50i, thanks to refinements to its twin-turbocharged, 4.4-liter V8, while the 3.0-liter, turbocharged six-pot should remain unchanged. We wouldn't hold our breath for an X6 diesel to arrive, although weirder stuff has happened. Like the X5, though, this should be a pretty slim refit that improves an already competent package to go along with an expected increase in price.

BMW 4 Series Convertible basks in the sun

The BMW 4 Series Convertible will show its non-camouflaged face sometime later this year, but our spies recently caught this nearly naked prototype out getting some sun. As you'll recall, the droptop 4 Series replaces the 3 Series Convertible in the BMW range, and if our recent stint behind the wheel of the new 435i Coupe is anything to go on, this topless 4er should be quite a fun runabout for sun-drenched motoring.
To no one's surprise, the 4 Series Convertible shares all of its design with the 4 Series coupe, save, of course, the obvious roofectomy. Beyond that, the topless 2+2 will use the same engines and transmissions as the coupe, meaning it should arrive in the US in both 428i and 435i guises, powered by a 2.0-liter turbocharged inline-four and 3.0-liter turbocharged inline-six, respectively. Both six-speed manual and eight-speed automatic transmissions will be available.
The car spied this time around has the full M Sport visual treatment, with the revised (and better-looking) front fascia, larger 19-inch wheels, and attractive Melbourne Red paint. Interestingly, it appears this prototype has the standard xenon headlamp setup, rather than the full-LED option that's also available.