It’s good to be the BMW 4 Series these days. It’s only been a few months since the model was released and already, it’s getting a lot of attention from racing teams and aftermarket companies. So it’s no surprise that theGeneva Motor Show was the scene for some tuners to showcase their first offerings for the 4 Series. Technically, BMW tuner extraordinaire Alpina already presented its program for the BMW 4 Series Coupe at the Tokyo Motor Show last year.
But nobody said anything about the 4 Series Convertible , right?
So here it is, ladies and gentlemen: the Alpina B4 Biturbo Convertible.
Befitting its philosophy of tuning sophistication, Alpine put in serious work on the 4 Series Convertible, turning it into one of its own to go with its distinctive B4 Bi-Turbo name.
This all looks and sounds pretty impressive to us, but that’s no shock from Alpina.
Click past the jump to read more about the 2014 BMW Alpina B4 BiTurbo Convertible
BMW Alpina B4 Biturbo Convertible in Detail
Alpina has never been the type to overwhelm its programs with new aerodynamic components and it followed a similar script with the B4 Bi-Turbo program for the 4 Series Convertible. The interior, though,is dressed up with a nice two-tone, blue-and-cream leather finish on the seats, the dash and the door inserts.
Where a majority of the fun stuff happened is under the 4 Series Convertible’s hood. Alpina slapped a pair of turbochargers onto the 3.0-liter straight-six, increasing the sports car’s output from 300 horsepower and 3000 pound-feet to an impressive 401 ponies and 443 pound-feet of torque. With these changes in place, the B4 BiTurbo Convertible now capable hits 62 mph in just 4.2 seconds to go with a top speed of 189 mph — that’s 1.4 seconds faster to 62 mph and a 34-mph increase in top speed over the stock 435i.
BMW Alpina B4 Biturbo Interior Detail