Bmw: Z4 3.0i on 2040-cars

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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.

BMW invests in carbon fiber for use beyond i and M models

The immense amount of resources BMW has poured into its i brand program hasn't stopped, and recent developments indicate it's likely to pay off for BMW and BMW buyers outside the i brand. The i8 has already sold out its first year run, the i3 racked up 10,000 orders before it even went on sale and is already the subject of public discussion about being stretched into an i5, and a new investment in carbon fiber production has the automaker talking about CFRP use in non-i and non-M models.
BMW and SGL Group got together to form SGL Automotive Carbon Fibers (ACF), and the joint venture produces all of the CFRP for the i3 and i8 on two production lines at its plant in Moses Lake, Washington. After already investing $100 million to increase capacity, BMW has announced that another $200 million will add four more production lines, tripling production from 3,000 tons per year to 9,000 tons. When the expansion is complete in 2015, BMW says the Moses Lake facility will be the world's largest carbon fiber plant.
That's a lot of weave and the long view is that it will find its way into core models, with BMW exec Dr. Klaus Draeger saying, "As part of an intelligent mix of materials, we will apply carbon also beyond our BMW i and BMW M models in the future," and be able to do so "at competitive costs and in large quantities."

Alpina bringing new B4 Bi-Turbo Cabrio to Geneva

Interested in picking up a new BMW 4 Series with a turbo six? You've got options: you can get the 435i with 300 horsepower or spring for the M4 with 425 hp. But if it's the convertible model you want, we're afraid you'll be limited to the latter as the M division can't help you (at least not for the time being). But that's where Alpina comes in.
The aftermarket tuner closely associated with BMW offers the B4 Bi-Turbo (at least in Europe) with that same 3.0-liter twin-turbo inline-six massaged up to 410 horsepower that starts to pose a threat to the M4. What's more is that the Alpina's 442 pound-feet of torque eclipses the M4's 406 lb-ft, to say nothing of the 435i's 300.
Best of all, Alpina just confirmed via Facebook that it'll offer the B4 in convertible form, bringing the resulting BMW Alpina B4 Bi-Turbo Cabrio to the Geneva Motor Show. We'd expect the weight penalty to knock it slightly off the coupe's quoted 4.1-second 0-60 time, but not by much. If only BMW were to bring this one Stateside like it does with the B7 sedan.