Porsche 911 GT3 RS

Take a look at the meanest Porsche 911 GT3 RS ever. This roadgoing track-day special has been spied doing some high speed testing at the Nurburgring – and the differences between it and the regular GT3, which was recently revealed at the Geneva Motor Show, are clear to see.

In addition to the new rear lights and LED daytime running lights of the new GT3, the RS version adds wider front wings, deeper side skirts and an enormous rear wing. Aimed at track day enthusiasts, the wing is adjustable and made from carbon fibre to keep weight down.

Other changes over the regular GT3 include a standard-fit roll cage with increased bracing to add even more stiffness to the chassis and a featherweight plastic rear screen. Porsche's adaptive PASM dampers will also come as standard while power will come from the same 429bhp 3.8-litre flat six-cylinder engine as the GT3. Expect 0-60mph in four seconds and a top speed in excess of 185mph.

Expect the 911 GT3 RS to make its public debut at the Frankfurt Motor Show in September with a price tag of around £95,000.