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

Customers less satisfied with run-flat, low-rolling resistance tires

In non-April Fool's news, customers who buy cars shod with run-flat tires are nearly twice as likely to have to replace them as people with more conventional tires, according to a J.D. Power and Associates study. The poll also found that customers are also less satisfied with low-rolling resistance tires.

Spyker Supercar & Spyker ’911′ at Geneva 2013

It seems that Victor Muller is planning not just a Spyker ’911′ for Geneva, but a Spyker ‘Supercar’ with oodles of power too. We discovered last year that Victor Muller has picked up the reins at Spyker once more, dragged in some investment from China and was working on the return of the Spyker D8 Peking-Paris super SUV (that started life as the D12). But, as this is Victor Muller, there are more grandiose plans in play.

Top 5 most important cars at the 2013 Frankfurt motor show

The five most important memorable cars in attendance at the world’s biggest motor show Nothing is as controversial as irritating your core enthusiasts, and the Audi Sport Quattro concept risks doing just that. Its name and styling riff off one of the most iconic cars in Audi’s back catalogue – and in WRC history – yet the new yellow version unveiled at the 2013 Frankfurt motor show has abandoned the five-cylinder engine, manual gearbox, and respectable kerbweight of the 2010 Quattro concept. In its place, we’ve an RS7-based coupe with the power of a Lamborghini Aventador (691bhp), twice the claimed economy of a Golf GTD (113mpg), but only because of a twin-turbo V8 mated to a hefty hybrid powertrain, and that means this new Sport Quattro weighs as much as a Bugatti Veyron Super Sport (1845kg).