Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Lotus Exige S Roadster at 2012 Geneva motor show

Here’s the new Lotus Exige S Roadster, unveiled on the eve of the 2012 Geneva motor show. With a sub-four second sprint to the 60mph mark, it’s Hethel’s quickest soft top ever; we've already seen the Lotus Exige S in coupe guise, but this is the open-top Roadster variant. A hefty 3.5-litre V6 engine lies behind the cockpit which, says Lotus, has received the benefits of its racing technology.

Jeep and Mopar create six concepts

Jeep and Mopar have created six new vehicles in time for the annual Easter Jeep Safari in Moab, Utah, which takes place from 31 March to 8 April. The six concepts join around 30 others developed since 2002 by the brands for the pleasure of Jeep enthusiasts. Jeep Grand Cherokee Trailhawk Concept Finished in Stone White, but with a theme of Mineral Gray – grille surround, mirror caps and rear light bar – and red – tow hooks, the Jeep logos on wheel center caps and bolt holes – visible throughout.

McLaren P1′s Pirelli P Zero Corsas key to performance +video

The new McLaren P1 is shod with custom-made Pirelli P Zero Corsa Tyres specially developed to meet the challenges of a 903bhp supercar. Ron Dennis has already told us that he has driven the P1 round the Top Gear test track at Dunsfold a full 10 seconds quicker than the Pagani Huayra went round, so we know the P1 has huge abilities on tap. But what’s also interesting is that Ron did his Top Gear lap on the P1′s road tyres, specially developed for McLaren by Pirelli, and not on hand-cut slicks like the Pagani Huayra.