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The 2014 Alpina B4 Bi-Turbo Cabrio powers up luxury and speed

The BMW specialists at Alpina know how to exploit a niche when they see one. With the BMW M4 still not technically official, it saw the need for a higher performance four-seat convertible than the 435i 'vert. Enter the new B4 Bi-Turbo Cabrio that is debuting at the Geneva Motor Show.
The European-exclusive model takes BMW's 3.0-liter, twin-turbocharged inline-6 and massages it up to 410 horsepower and 442 pound-feet of torque, which is less power but more twist than the M4 would give buyers. Alpina's tend to be built more as quick, luxurious grand tourers, and the B4 Bi-Turbo gets is no different with an adaptive sport suspension and an eight-speed automatic. Plus it wears the classic pinstripes and 21-spoke wheels that are the brand's design hallmarks.
While the added weight for the convertible means that the Cabrio takes 4.5 seconds to reach 62 miles per hour, about a half-second slower than the coupe, at the moment it is the only way to get this kind of performance in a BMW convertible. Orders for the convertible open in March in Europe and prices in Germany start at 74,800 euros ($102,878 at today's conversion rates).

Ford, GM still doing new business with Takata amidst airbag crisis

Lengthy vehicle development times make it difficult for automakers to cut and run from the supplier. You might expect automakers to be fleeing any connection with beleaguered supplier Takata in the wake of the company's exploding airbag inflator crisis. After all, with a Senate hearing, pending lawsuit, plummeting stock value and demand for a national recall, the tier-one supplier isn't at its strongest right now. However, years of cooperation mean that automakers are standing by Takata, and necessity may be playing a role, as well. About 39 percent of Takata's business comes from airbags, and seatbelts make up another significant chunk of the operation too, says Bloomberg. The long-term relationships and lengthy vehicle development times make it difficult for automakers to cut and run from the supplier. "Takata has so much product breadth that I don't really see that they could just disappear," said AutoPacific analyst Dave Sullivan to Bloomberg. For example, Takata helped develop the unique front center airbag with General Motors in models like the Chevrolet Traverse and Buick Enclave. Outside of safety tech, it is also a partner with Ford on the adaptive steering system available on the upcoming 2015 Edge. These long-lasting partnerships make change difficult now that there's a problem. According to Reuters, automakers claim it would take a year or longer to set up with a different supplier for replacement airbag inflators. Switching to a completely different part for the repairs might not be a viable option either, because of the engineering time needed. BMW is taking action, though. According to Reuters, the Bavarian brand is working with the supplier to move inflator production from Monclova, Mexico, to a Takata factory in Freiburg, Germany. The Mexican plant may be the source of some of the faulty parts. News Source: Bloomberg, ReutersImage Credit: Jens Meyer / AP Photo BMW Ford GM Safety Takata airbag recall

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.