For Alpina, a technology driven company, standstill is a foreign  word. Since the introduction of the B7 Bi-Turbo,  the engineers from Buchloe, Germany, have been continuously working on  the details of the turbo charging and intercooler system.
Consequently,  the all-aluminium V8 power plant now produces 540hp (397kW) at a  moderate 5500rpm, with a maximum torque of 700Nm from 3000rpm. Two  turbo-chargers configured in parallel, each feeding one of the two  cylinder banks, with specially developed large diameter exhaust-turbines  allow this engine configuration to provide both exceptional power  output and an abundance of torque over an especially broad rpm range  while maintaining excellent throttle response at low rpm.
The  comprehensive high-performance cooling system comprises an indirect  inter-cooling system (air-to-water/water-to-air) with short intake  tracts and increased inter-cooler flow. The systems excellent  thermodynamic efficiency is guaranteed by a large-volume low-temperature  inter-cooler radiator, two water-to-air intercoolers placed close to  the engine and additional separate motor oil and water coolers.
High-performance  MAHLE pistons are designed specifically to deal with temperatures and  pressures associated with up to 1.0 bar charging and the engine's 9.2:1  nominal compression ratio. Altogether this results in an impressive  specific output of 122.7hp (90kW) per litre and a mean total compression  of 20.1 bar. Direct injection and Double-VANOS contribute to the B6  Bi-Turbo's class-leading consumption and emission figures: 10.5 (10.6)  l/100km and 244 (247) g/km CO2, Combined cycle, measured according to  ECE Norm (data for Convertible  in brackets).
Adapted and tested in co-operation with ZF, the advanced  SWITCH-TRONIC 8-speed Sport Automatic Transmission sets benchmarks. With  Alpina's philosophy the guiding credo, engineers have spent thousands  of development and test hours ensuring that no other performance  automatic transmission comes close to providing this level of both  comfort and performance.
The blend of eight speeds and plenty of  torque makes for unparalleled comfortable gear changes with no  noticeable interruption to the delivery of power - only the accompanying  acoustics and the dynamic rev counter provide feedback as to the  workings of the transmission. 700Nm of torque means the B6 Bi-Turbo  excels at cruising along at speed in a high gear at minimum rpm,  benefiting both consumption and comfort.
Using the Sport (S) Shift  Mode a completely different character emerges: the transmission is  crisp and unmistakably immediate. The innovative single-cylinder fadeout  (known as 'Einzelzylinderausblendung' in German) enables super quick  up-shifts which take just milliseconds. Depending on the load on the  transmission, the injection of fuel into a given cylinder is interrupted  for a fraction of a second, creating the required reduction in torque  that the automatic transmission needs for the up-shift. The advantages  versus the typical method of timing retardation are noticeably quicker  shifts, improved thermo-dynamic efficiency due to reduced exhaust  temperatures and lower fuel consumption. Each up-shift is accompanied by  a deep back-pressure burble.
The SWITCH-TRONIC buttons, for use  in the Manual (M) Shift Mode, are ergonomically and unobstrusively  positioned on the back of the steering wheel, and allow the driver to  take complete control of the transmission. The system allows for  multi-simultaneous down-shifts in milliseconds, hereby the transmission  will skip several gears depending on engine loads and rpm. In this  manner the 8-speed Sport Automatic Transmission with Alpina  SWITCH-TRONIC reveals itself as extremely multi-faceted, providing the  right shift characteristic for any and all situations.
The  Automatic Up-Shift function means that the transmission will up-shift  into a higher gear once a certain rpm threshold has been passed in the  current gear. In certain driving situations this may not be desired, for  example during especially sporty driving or for example when  encountering multiple tight hair-pin corners. The simultaneous selection  of either Sport, Sport+ or DSC OFF Mode using the Drive Dynamic Control  button and the selection of the M Shift Mode (transmission) will  deactivate the automatic up-shift funtion. The transmission will hold  the selected gear up to maximum rpm's (electronically limited) and will  not automatically up-shift into a higher gear.
The intelligent  coupling of state-of-the-art engine and transmission technologies give  the B6 Bi-Turbo stunning performance figures: 0-100km/h in 4.4s (4.5s),  and a top speed of 320 (317) km/h.
EXHAUST SYSTEM -  Pure-bred, Sonorous, Lightweight
For the first time,  Alpina has collaborated with Akrapovič on the development of a  lightweight exhaust system made from high-strength titanium. Faithful to  the guiding principle of 'form follows function', the entire system is  noted not only for its acoustics and appearance, but also for its  technical refinements. In addition to a weight-saving of 45% compared to  the conventional use of stainless steel, the exhaust system also boasts  impressive technical details. The engineers from Alpina and Akrapovič  have achieved quite a feat, managing to retain a diameter of 2 x 70mm  throughout the entire length of the exhaust system, despite the tricky  'packaging'. In conjunction with further design refinements, exhaust  back-pressure is reduced to an absolute minimum.
In interaction  with the powerful engine, the exhaust system generates a backdrop of  deep, sonorous eight-cylinder sound - powerful, sporty, but never  obtrusive, due to intelligent, controllable exhaust valves. These offer  the driver a special degree of influence over the sound experience, and  can be controlled using the Drive Performance Control. In Comfort+ and  Comfort Mode the valves are closed, opening at 3000rpm, regardless of  the selected gear. In 1st and 2nd gear decisive use of the accelerator  will cause the valves to open (at approx. 60% load) and the B6 Bi-Turbo  to elicit a special symphony from the tailpipes during dynamic bursts of  acceleration. As befits the character of the B6 Bi-Turbo in Sport and  Sport+ Modes, the exhaust valves remain open at all times.
CHASSIS  - Dynamic Comfort
High-performance convertibles and  large grand coupés place special demands on their chassis - requiring  distinct levels of comfort for easy cruising, safe and neutral handling  at high speeds, and light-footed agility for the moments in between. In  order to do justice to this broad spectrum of requirements, the new B6  Bi-Turbo features the latest electronic suspension technologies and  comes with Drive Performance Control (electronically adjustable dampers)  and Dynamic Drive (active roll stabilisation) as standard.
This  system has been artfully calibrated by Alpina and is tied into other  system parameters controlling steering assistance, torque cushioning and  the Dynamic Stability Control system. Featuring pronounced Comfort+,  Comfort, Sport and Sport+ modes, the B6 Bi-Turbo transitions  effortlessly from cultivated luxury convertible to thorough-bred sports  car. Across all variables, the Coupé has been set-up to be more sporting  and dynamic, and features a rear axle with limited slip differential as  standard.
Specific springs, increased front wheel camber and a  subtle adjustment of the toe-in in conjunction with a 20" wheel-tyre  combination all serve to produce a very agile chassis set-up. The  lightweight 20" Alpina CLASSIC wheels, with MICHELIN PILOT SUPER SPORT  tyres in the dimensions 255/35 ZR20 front and 285/30 ZR20 rear,  contribute significantly to the direct handling and precise steering.  Conventional tyres are used to promote ride comfort.
EXTERIOR  DESIGN - Exciting Details, Functional Aerodynamics
The BMW 6-Series is marked by an  elegant and dynamic design as well as excellent aerodynamic properties.  Alpina gives the new B6 Bi-Turbo a unique, powerful appearance which  elegantly underlines the sporty character of this beautiful coupé and  convertible.
The exterior components that influence the  aerodynamic properties of the B6 Bi-Turbo are not just there for  aesthetic reasons - their design is subject primarily to functional  premises and plays a central role in achieving excellent high speed  stability. Take for example the front spoiler with the integrated carbon  fibre front splitter. It causes more air to flow over and around the  vehicle, simultaneously reducing the air masses which flow underneath by  more than 10%. This leads to a noticeable stabilisation of the  front-end at high speeds and plays a role in reducing any tendencies to  understeer. The front spoiler, in conjunction with the rear spoiler,  ensures that the B6 Bi-Turbo is very well 'tethered' overall. Uplift on  the front axle is reduced by 14% and tends towards a value of zero on  the rear axle from a speed of 150km/h. Instead of the rear spoiler, the  Coupé is also available with a rear wing - which despite an impressive  visual impact, fits precisely the contours of the rear area and reduces  drag.
All these components also ensure the effective flow of air  to various cooler groups, such as the inter-coolers and engine cooling  system. One special detail: the high-performance brakes, with a diameter  of 374mm front and 345mm rear, are additionally supplied with cooling  air by a specially constructed NACA air intake on the front underbody.
The  double tailpipes, with a slightly elliptical shape in typical Alpina  style, are designed in titanium and carry small logos that make discreet  reference to the origins of the Alpina exhaust system made by  Akrapovič. The rear valence, which attractively and elegantly frames the  outlet of the tailpipes, additionally integrates the features of a  diffuser.
INTERIOR & EQUIPMENT - Master Craftsmanship,  Exclusive Personalisation
Blue Alpina instruments with  high resolution information display with black panel LCD technology. A  sport steering wheel, hand-stitched in LAVALINA leather. Blue  illuminated entry sills with logo. Or the classic Alpina exotic wood  equipment in myrtle - an exclusive burl wood of the laurel family, which  grows only on the Pacific coast of the USA. These are just some of the  elegant features of the interior that point to the exclusive origins of  the B6 Bi-Turbo - just for connoisseurs.
Naturally, no limits are  set on the personal predilections of customers. From the paintwork to  the interior trims to the colour of the upholstery - everything offered  by the extensive BMW and Alpina equipment range is available. Seldom  does a BMW Alpina leave Buchloe without making use of the virtually  limitless personalisation options offered by the Alpina Manufaktur. Our  philosophy dictates that the customer can design his or her own  individual interior - made by skilled craftsmen in our leather workshop.
The  B6 Bi-Turbo features an extensive range of standard equipment,  including leather upholstery, fully adjustable comfort seats with  heating system, navigation system with preparation for Bluetooth mobile  phone, USB audio interface, Xenon lights and LED fog lights.























