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Alpina, the tuning BMWs for years, has partnered with a competitor to the new M5. It develops the same amount of electricity, at 60 km / h in 4.7 seconds and a top speed of 195 km / h - Alpina not believe in 155 mph limiters for cars. As a result, it argues, is the world's fastest production sedan - and not many people would argue.

Heart of the BMW ALPINA B5 - based on the 5-series, like the M5 - BMW is 4.4 liters of V-8. BMW M division is not without turbos and super chargers. Alpina not they have a centrifugal compressor engine, to increase performance throughout the speed range and the same performance as the original BMW V-10.

Bu the system has a regular turn. At idle and when driving at low speed, the compressor does not work, so gas mileage is pretty good. A throttle plate before the compressor cuts off and according to load.

Mighty with a powerful 500 hp

This is a more powerful engine, at 2,500 rpm it develops 200 hp, and ramps up to 500 hp at just 5500 rpm, so that the character of the engine is quite different from that of BMW's V-10. Thanks to the compressor, there is massive torque over a wide area, with the maximum of 516 lb ft from 4250 to 5250 rpm - great mid-range power.

The engine drives through a ZF six-speed automatic transmission and the brakes, wheels and tires are all updated. The tires are Michelin Pilot Sport 2s, 245/40ZR 19 on the front and 275/35ZR 19 on the back - these are just a bit narrower than on the M5. The Alpina is well over 200 kg lighter than the M5 at 3790 lbs not a copy, a different approach to the introduction of comparable performance. Prefer joy turning to 8,000 rpm or a solid thump on the back at 4,000-5,500 rpm?

If you fancy something more portable, try the BMW Alpina B3 S Coupe. It is used by BMW straight six, bored to 3.3 liters. It is the churn 305 hp at 6300 rpm. Well 168 km / h and a 0-60 mph time of 5.4 seconds. A true competitor for many sports.

John Hartley is editor of http://www.fast-autos.com, an online magazine for fast cars and Supercars. He has many of the world's leading car magazines and has written many books about cars and the automotive industry, including the suspension and steering committee Q & A "and" The revolution in the automotive electronics industry. "

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