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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.

Submit your questions for Autoblog Podcast #334 LIVE!

We're set to record Autoblog Podcast #334 tonight, and you can drop us your questions and comments via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
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2014 Mercedes Benz S Class

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.