BMW has unveiled the concept for its next-generation Z4 roadster at the Pebble Beach Concourse d’Elegance.

Although the successor to the E89-generation BMW Z4 was been spied undergoing testing on a number of occasions in the past 12 months, technical details regarding the new roadster are scant. The Z4and forthcoming Toyota Supra arethe result of a collaboration (announced in 2012) between BMW and Toyota to each co-develop and build a new mid-size sportscar on the same platform.

BMW appears to have reverted to classic low-slung roadster styling (and a soft top configuration) with the newcomer, which sports, a long bonnet, acutely-angled windscreen, flared wheel arches, a pronounced rear spoiler and slim taillights. The new model also features slim side mirrors and a muscular rear end with large alloy wheels filling the wheel arches. The rollover hoops behind the headrests add a stylish touch to the overall design.

BMW's Senior Vice President of Design, Adrian van Hooydonk, commented: "The concept expresses the new BMW design language from all perspectives and in all details. From the dynamic-looking front to the striking flanks to the clean-cut tail end: a few lines and the subtle interplay between surfaces are enough to generate a sense of power and emotion."

In terms of engine power, the Z4 is likely to employ a 2.0-litre 4-cylinderand 3.0-litre, 6-cylinder turbopetrol engines. Exact detailshave yet to be confirmed. We will keep you updated as soon as more information becomes available, but for now, enjoy the gallery.

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