Bentley ‘s second generation Continental GTC convertible will make its global debut at next month’s Frankfurt show.

Order books are open and first customer deliveries will begin in late 2011. The car is based on the updated GT coupe launched last year and replaces a model launched in 2006.

New manufacturing techniques produce aluminium front wings without seams or welds. Twenty-inch wheels are now standard with three styles of 21-inch wheel, a first for the GTC, optional.

The four-seater luxury convertible has a hand-crafted cabin, with soft-touch leather hides, an extensive range of wood veneers, cool-touch metals and deep-pile carpets. There are 17 standard hide colours with six colour split combinations, complemented by a range of seven veneers.

The tailored, multi-layered fabric hood is complemented by acoustic glass and under-body panels, for optimum noise isolation.

The cabin offers additional rear legroom, new storage and innovative features such as touch-screen infotainment, automatic seat-belt presenters and a Bentley-designed neck warmer.

A wider track, sharper steering and retuned suspension improve the drive. The all-wheel drive system features a new 40:60 rear torque bias (compared with 50:50 of the original GTC) minimising understeer during hard cornering and allowing the driver to manage the car’s line and balance via precise throttle control.

There is a more powerful six-litre, twin-turbocharged W12 engine as well as a new QuickShift transmission enabling faster gear changes. Power output is raised from 560PS to 575PS (567bhp/423kW) and torque has been increased by a further 50Nm to 700Nm (516lb ft).