The Alpina B4 Biturbo made its debut at the Geneva Motor Show. It’s based on the BMW 435i Convertible, featuring an inline six-cylinder engine. But under the F33 Alpina B4 hood you’ll find a heavily modified version of the N55 BMW engine, where a second turbocharger was fitted. The end result is 410 hp and 443 lb-ft of torque, about 30% more than the series model.
The Alpina exterior is characterized by short overhangs, precise, long-drawn-shoulder lines, a wide rear and the metal folding roof. The sporty design of the front spoiler was influenced by functional air intakes and together with the modest rear spoiler improves handling at high speeds. The Alpina Classic 20″ alloys fit seamlessly onto the car, adding style and elegance. It only takes 20 seconds to close the roof, which is possible up to a speed of 18 km/h.Please note that the shape of the roof line differs from the B4 Bi-Turbo Coupé, due to the steeper rake of the rear windscreen, flat boot lid and subtle rear spoiler.
Inside the cabin, the modified car features an extensive list of standard equipment, such as leather upholstery, electrically adjustable heated sports seats, automatic climate control, xenon headlights, rain sensor and cruise control. Passengers will enjoy refined materials and the exclusive ambiance. The door sills, floor mats, emblems in the seat-backs, instrumentation and a hand-stitched sport steering wheel in the finest LAVALINA leather will make anyone feel right as rain. And it is raining..