Aftermarket Tuning News

Alpina’s newest B5 BiTurbo Exposed

Alpina B5 BiTurbo

For those that just can’t wait for the new F10 M5.

Based on the new sixth-generation BMW 5-Series, the new Alpina B5 BiTurbo embodies the classic blend of sport and refinement unique to Alpina models. Featuring the same BiTurbo V-8 found in the B7 BiTurbo, a first-class interior, and revised suspension and bodywork, the latest B5 BiTurbo adds more excitement and luxury to the latest 5-Series sedan.

Under the hood of the new B5 BiTurbo is the same 4.4-liter V-8 that made its debut in the BMW Alpina B7 BiTurbo. The twin-turbocharged V-8 is fitted with new, larger turbochargers from Honeywell-Garrett with a more efficient inter-cooling system help to achieve improved throttle response and a broader torque curve. Additionally, new pistons developed in conjunction with Mahle have been installed in order to withstand the increased boost pressure and 9.2:1 compression ratio. Although the V-8 packs 507 hp and 517 lb-ft. of torque, it still retains a class-leading 26.2 imp. mpg and 252 g/km CO2.

Alpina B5 BiTurbo

To handle the increased power and provide enhanced performance and refinement, engineers at Alpina have subjected the ZF eight-speed automatic to extensive testing. Coupled with the V-8, the transmission allows for effortless and uninterrupted gear changes. Switching to Sport Mode results in quicker up-shifts and employs Alpina’s single-cylinder step-down (EZA), which interrupts the fuel supply to a given cylinder to attain the reduction in torque required for quick shifts. In Manual Mode, the driver can change gears using the Switch-Tronic buttons behind the steering wheel without having to worry about mandatory up-shifts. With the updated transmission, the B5 BiTurbo can sprint to 62 mph in just 4.7 seconds and reach a top speed of 191 mph.

In the new Alpina B5 BiTurbo, Alpina’s goal was to create a neutral and balanced handling setup by modifying the suspension and adding new wheels. Special suspension arms and shorter, but progressive springs create more front camber, while an electronically adjustable suspension system (Variable Damper Control) alloys for adaptable handling characteristics. Newly developed Michelin Pilot Super Sport tires provide superb high-speed stability and are fitted to 20-inch Alpina Classic wheels measuring 8.5 x 20 at the front axle and 9.5 x 20 at the rear.

The exterior of the newest Alpina exudes confidence and class with functional bodywork. The front features a new bumper with a large air intake and splitter, while the rear sports a new trunk spoiler and wears a new valance with an integrated diffuser. The new aerodynamic bodywork results in a 30 percent front and 60 percent rear reduction in lift for high-speed stability.

Alpina B5 BiTurbo

Inside, the Alpina BMW B5 BiTurbo is features an elegant and satisfying cabin. New adjustable comfort seats are dressed in a rich leather, while Alpina burled Myrtle wood graces the dashboard and trim. Precise driving is guaranteed with the hand-stitched Lavalina leather Switch-Tronic steering wheel and blue Alpina gauges with black-panel LCD technology.

Pricing and availability for the B5 BiTurbo has not been released, but expect a near-$100k price tag.

BMW Alpina B5 BiTurbo Gallery

BMW Alpina B5 BiTurbo Specifications

Displacement: 4.4-liters
Number of Cylinders: V-8
Aspiration: Twin-turbocharged
Maximum Boost Pressure: 1 Bar (14.5 Psi)
Compression Ratio: 9.2:1
Bore: 89.0 mm
Stroke: 88.3 mm
Maximum Horsepower: 507 at 5,500 RPM
Maximum Torque: 516 lb-ft. at 3,000 to 4,750 RPM

Type: ZF 8-speed Sport automatic with Switch-Tronic
Drive: Rear-wheel

Acceleration 0-62 mph: 4.7 seconds
Top Speed: 191 mph

Wheels and Tires:
Wheels: 20-spoke Alpina Classic light alloy wheels
Front Wheels: 8.5 x 20
Rear Wheels: 9.5 x 20
Tires: Michelin Pilot Super Sport
Front Tires: 255/35 ZR20
Rear Tires: 285/30 ZR20

Source: Alpina

Which would you rather have: the new M5 or the B5 BiTurbo? Leave a comment and let us know!


Fan Faves

To Top