Not happy with the available options list for the range-topping 911 Turbo? It is common knowledge that Porsche’s additional options list is one of the biggest (and most expensive) across the auto industry. With some models, you can add an additional 50 percent or more to the price with Porsche’s factory-fitted optional extras.

Don’t believe me? Try loading up optional extras on your dream Porsche on the ‘Porsche Configurator’ and check out your final cost.

Now, to add to the list, Porsche is offering new 19-inch RS Spyder wheels exclusively for the 911 Turbo - another costly, but, yes, desirable option among a range of highly specialised, customised features.

What makes this wheel cleverly unique is the newly-developed central locking mechanism.

Instead of the central wheel nuts generally used in motorsport wheels, these very special wheels come with wheel bolts fastening them firmly and safely on to a standard wheel bearing, but still looking like a central wheel nut motorsport wheel. Don’t get it? Study the pictures.

The innovative security mechanism on the wheel bearing is made up of a cartridge fitted to the wheel hub with spring-mounted eloxy-plated security bolts.

The special look to the new wheels is derived from Porsche’s hugely successful race car - the RS Spyder.

The new wheel will be available as an option on the 911 Turbo as of January 2009, selling at a base price in Europe of Euro 2,950 that’s $5762 AUD at current exchange rates.

What I don’t understand though is this: surely the track-focused GT3 and GT2 models (particularly the GT3 which borrows many Porsche race car components) are more functionally suited to the new wheels than the Turbo 911 (the rich man’s toy). Opinions on a postcard please.