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Vorsteiner BMW M4 GTRS4 shows how to do a widebody at SEMA

Part of the joy of the SEMA Show is that all of the best tuners in the world are competing to show off their wares, and the challenge often pushes the companies into some absolutely insane directions. Case in point: Vorsteiner and its ludicrous GTRS4 wide body kit with the BMW M4.
According to Auto Evolution, the kit reportedly adds 4 inches in the front to fit 10.5-inch-wide wheels and a massive 7-inches more in the rear to snug in 13.5-inch-wide wheels, but spinning around the BMW in these images makes the changes look even more extreme. Beyond just the extra room in the fenders, the lower air intakes are ready to suck in huge volumes of cool air, and there's a front splitter to keep things planted. The front and rear extensions are joined by side sills that grow the farther back they go. Finally, at the rear, the M4 gets a reworked diffuser with mesh inserts.
This is just the type of automotive craziness that makes SEMA interesting. Take a lot at it for yourself in the gallery.

2015 BMW M4 Convertible will give the best bad hair days

BMW officially unveiled the 2015 M4 Convertible at the Javits Center in New York this morning. The droptop, which will slot in next to the M4 Coupe in BMW's performance line, offers infinitely more headroom, fresh air and sunshine for those that want a little more great outdoors and tousled hair with their M experience.
Visually, the M4 convertible is similar to the coupe, and carries on the hardtop's athletic stance with a long wheelbase, short front overhang, aerodynamic mirrors and in the case of this showcar, optional yellow-painted brake calipers. The car's expressive, angry face is perhaps the most notable aspect of its styling, screaming "get the hell out of my way!" with its signature twin-bar kidney grille, trio of air intakes and squinty LED headlights. Inside, the convertible employs three-temperature neck warmers (for chilly top-down days), an absurd amount of "M" logos and a wealth of luxury and technology features.
The rear-wheel-drive convertible uses the same engine as the coupe: a high-revving, twin-turbocharged 3.0-liter inline six producing 425 horsepower and 406 pound-feet of torque, mated to either a six-speed manual or a seven-speed M dual-clutch transmission. BMW says the car can make a 0-60 sprint in just 4.4 seconds when equipped with the manual.

Tesla in talks with BMW about batteries, charging collaborations

With Toyota and Daimler no longer holding Tesla shares, the electric vehicle company might be looking for a new partner – possibly a Bavarian one. In a new interview with Germany's Der Spiegel, CEO Elon Musk confirmed that he has had talks with BMW execs about future collaboration. "We are talking about whether we can collaborate in battery technology or charging stations," Musk said in the interview, according to Reuters. However, a Tesla spokesperson has tempered things by saying no formal agreements are in place at the moment. In the same interview, Musk reportedly praised BMW's use of carbon-fiber-reinforced plastic in its i sub-brand offerings, and said he would like to have a battery factory in Germany in the next five or six years. The possibility of technological cooperation between Tesla and BMW has been a hot topic this year. In June, Musk reportedly met with BMW execs, and the two companies were also rumored to have met with Nissan to discuss charging technology. When Daimler sold off its shares, there was talk of it opening the way for possible collaboration between the two automakers, as well.