The ROADSTER S will be a maturation of the Z4, decidedly more powerful, and with most agile handling and increased levels of riding comfort. As its qualities become ever more clear, whether due to its exterior presentation, whether driven by its dapper interior – the BMW ALPINA ROADSTER S will offer, in short, a more capable form of luxury in every sense of the word.
Let’s talk power: the ROADSTER S contains the ALPINA straight-six cylinder engine with 3,4 litres and 300 bhp, a well-known friend from the 3 Series. It’s quite happy to rev to 7200 rpm, but is renowned for its high levels of torque – 362 Nm at 4800 rpm. With this level of power, and a kerb weight of 1320 kg (DIN), the weight-to-power ratio is a scant 4,4 kg/bhp, one of the lowest in the entire BMW and ALPINA programme.
The almost pre-programmed results are exceptional driving pleasure and a purist’s dynamic – 0-100 kph in 5,3 s – yet the ROADSTER S is more than capable of relaxed cruising at 60 kph in sixth gear, exhibiting stellar fuel economy across the performance range.
We understand automotive competence to reach beyond the drivetrain. Vehicle dynamics must also be defined in terms of negative acceleration, in other words, the braking system must be, and is, more than up to the task of meeting the ROADSTER S’ high-performance challenge.
The ROADSTER S rolls, as did the BMW ALPINA ROADSTER V8, on stunning ALPINA wheels in DYNAMIC design. The 19“ wheels are 8,5“ wide in the front, and 9,5“ wide in the rear. We made a conscious choice not to use Run-Flat but conventional tyre technology, offering better rolling comfort and reducing unsprung weight, this being good for one’s driving enjoyment whilst allowing tyre and pavement to better mingle. Instead we’ve Michelin Pilot Sport tyres – other tyre brands aren’t to be found at ALPINA – 235/35 in the front, 265/30 at the rear.
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