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Alpina has revised the top speed of the new BMW 7-Series-based B7 Bi-Turbo, just in time for the model’s UK launch. The final specification of the new super-saloon (and the closest we’ll ever get to a full-blown BMW M7) pushes the top speed to a very impressive 205mph (330km/h), up from the predicted 193mph (310km/h) figure that was announced at the model’s debut at the last Geneva Motor Show. Power comes from a heavily reworked version of BMW’s twin-turbo 4.4-liter V8 which now makes 600hp (608PS) and 590lb-ft (800Nm), courtesy of the specially developed twin-scroll turbos which deliver up to 1.2 bar of boost pressure with minimal inertia. Alpina has also added a new indirect intercooler system (air/water/air), featuring a main intercooler feeding two large and close-coupled intercoolers and additional radiators, to make sure that the twin-turbo V8 will be thermodynamically stable at all times. The ZF eight-speed automatic transmission has also been upgraded with additional...

The new BMW 5 Series just started reaching dealers last month. So it may be a while before the new M5 is ready. But in the meantime, Alpina is filling the void with its new B5 Bi-Turbo. Revealed at the 2017 Geneva Motor Show, the new B5 is Alpina's fastest-accelerating vehicle yet. All it takes is 3.5 seconds to reach 62 miles per hour from a standstill. Keep the throttle pegged to the floor and you'll pass 124 mph in 11.4 seconds, eventually topping out at 205 mph. Just the ticket for a high-speed romp down a derestricted stretch of the Autobahn, in short. And Alpina pulled every trick in the book to make sure it would be. For starters, the 4.4-liter twin-turbo V8 kicks out 600 horsepower and 590 lb-ft of torque. That's slightly more power but significantly more torque than the 30 Jahre edition that was the most potent M5 to date. The new B5 also features all-wheel drive, four-wheel steering, and an eight-speed automatic transmission with Connected Shift technol...

BMW's own M division isn't the only outfit offering performance-enhanced Bimmers. The good folks at Alpina do the same, with their own unique flavor. And they'll be coming to the 2017 Geneva Motor Show this week with even more powerful versions of their core models. The latest versions of the Alpina B3 S and B4 S Bi-Turbo have been fitted with new turbochargers, an enhanced cooling system, retuned suspension, and remapped transmission software. The result is a 7 percent increase in power and 10 percent rise in torque for a total of 434 horsepower and 487 lb-ft. The 3.0-liter twin-turbo inline-six is similar to the one found in BMW's own M3 and M4, but more powerful. The latest Alpinas outgun their M counterparts by a modest 9 hp but a massive 41 lb-ft. Alpina reports that its latest take on the 3 and 4 Series will rocket to 62 miles per hour from a standstill in as little as 4.2 seconds, and top out at 190 mph. Perfect, in short, for crunching miles on the Auto...