BMW/ALPINA B5

BMW/ALPINA B5 Touring

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*This document is written in German.

The BMW E60 and the 4.4-liter BMW N62 engine from the 545i serve as the basis for the Alpina B5. Compared to the E60, the B5 has larger brakes, a new suspension with Electronic Damper Control, a stainless steel silencing system with polished double tailpipes and the typical Alpina changes to the interior and exterior.

The B5 was made from February 2005 to September 2007 and the B5 S was made from September 2007 to May 2010.

Drivetrain

The N62B44’s output is increased by means of a centrifugal supercharger. The supercharger is made by the company ASA, and is also called “Turbessor” because it is able to combine the advantages of turbocharger and supercharger. At low speeds, it spontaneously responds as a conventional displacement compressor, but it can also immediately provide the thrust of a turbo. It also reaches speeds of more than 100,000 revolutions per minute. As compared to the 545i performance has increased from 245 kW (333 PS; 329 hp) to 368 kW (500 PS; 493 hp), torque was increased from 450 N⋅m (332 ft⋅lbf) to 700 N⋅m (516 ft⋅lbf). The power is transmitted to the rear wheels by means of a six-speed automatic transmission (6HP26). As usual with Alpina, this was refined and has “Switch-Tronic”.

BMW/ALPINA B5 S

BMW/ALPINA B5 S Touring

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*This document is written in German.

The Alpina B5 (E60) is the first generation of the Alpina B5 high performance executive car manufactured by German automobile manufacturer Alpina from 2005 to 2011. Based on the BMW 5 Series (E60), the car was available in saloon and wagon bodystyles. The car succeeds the Alpina B10.

Engine

The motor’s combustion process was optimized by changing the camshaft. This resulted in a significantly lower exhaust gas temperature, which is the basis for the performance increase. The power of the 4.4-liter V8 was thus increased by 22 kW (30 PS; 30 hp) to 390 kW (530 PS; 523 hp). The torque increased by 25 N⋅m (18 ft⋅lbf) to 725 N⋅m (535 ft⋅lbf). The B5 S takes the sprint to 100 km/h (62 mph) in 4.6 seconds; The top speed increases to 317 km/h (197 mph).

Transmission

One innovation is the ZF six-speed Sport-Switch-Tronic transmission. The switching time was reduced by 50% compared to the predecessor. The reaction time is 1/10 s. In manual mode, the driving feeling is similar to the shift dynamics of a dual clutch transmission.

Chassis

A further feature is the EDC suspension tuning with the company Sachs Race Engineering.

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*This document is written in German.