Porsche creates aerodynamically enhanced roof box

Porsche Tequipment and design consultant Studio FA Porsche have jointly created an all-new roof box with aerodynamic efficiency and performance unmatched by its rivals.

Tested in Porsche Development Centre's wind tunnel in Weissach, Porsche's accessories arm says its latest roof box has been thoroughly tested at speeds of up to 200km/h to ensure it can withstand the toughest conditions.

Sadly, there's no word on how fast a roof box-equipped Porsche can be driven at, nor if the car-maker attempted a Nurburgring lap record with the boot-extender mounted up top.

Curiously, testing for the new roof box, which adds a useful 480 litres of carrying capacity, was carried out on both the road and track.

Developed to carry up to 75kg, the new roof box measures 2120mm long, 920mm wide and 445mm high.

Helping secure the load are three heavy-duty straps and a quick-fastening system that enables it to be opened from either side.

The standard colour is High Gloss Black, with the side blades available in Dolomite Silver metallic, Carrera White metallic or Volcano grey metallic.

That said, the new roof box can also be matched to whatever colour you've had your Porsche painted.

Other options include Porsche crest stickers and two pairs of gloves to help you load.

On sale in Germany now, the new Porsche roof box is priced from €1150 ($A1780), with the coloured side blades available for an extra €350 ($A540).