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

Porsche makes £14k on every car it sells, Bentley makes £12.7k

Porsche made £14k on every car sold in 2013 If you need an illustration of how much more profitable high-end sports and luxury cars are than mainstream cars, VW Groups sales figures demonstrate it perfectly. At the extreme ends of the profit per car spectrum, Porsche made an enviable £13,931 for every car it sold in 2013 and VW made just £615 (although SEAT actually lost £330 on every car it sold) . In fact, although you might expect the higher-priced Bentley range to make more per car than a Porsche, Bentley only managed a creditable second place on VW Group’s profit per car table, turning in £12,700 profit for every car it turned out (11,000 of them in 2013).

Porsche 918 Spyder details emerge in leaked document

Rennteam.com forum member Rossi has posted what looks to be leaked details of the Porsche 918 Spyder hybrid. We know much of the information, but we're psyched to learn that it only comes in left-hand drive. Other surprises include the quick charger that reduces charge times about 30 minutes and the inclusion of Sail Mode, which decouples the transmission from the engine to conserve fuel.

Optima Sports pushes two new tire innovations

WITH VIDEO -- If John Scott has his way, every car on the road will be shod with tires featuring built-in camber. Scott is the owner of Wisconsin-based Optima Sports, a small automotive-engineering firm, and inventor of Camber Tires--tires with a constantly decreasing diameter. According to Scott, his tires offer multiple benefits, including enhanced handling, increased stability, reduced tread noise, improved fuel economy and better safety by reducing rollovers.