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

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.

Porsche 911 GT2 RS leaks

The Porsche GT2 RS leaks from a private viewing in Leipzig Not literally, you understand, but the details of the new Porsche 911 GT2 RS have found there way on to the interweb from that font of high-end help – Teamspeed. The 911 GT2 RS – the last of the current generation (997) 911s to surface before we get an all new 911 in 2010 – was previewed for dealers and valued clients in Leipzig. Which probably means that at least one of Teamspeed’s members were at the event, hence the phote above and some gen on what the GT2 RS has to offer.

July 15: Bars and potholes

Last night I wound up leaving the office around midnight. With traffic finally cleared off the Santa Monica Freeway I flew down the road at between 105 and 115 km/hr. That's 65 to 71 mph.