2-new Bf Goodrich Rugged Terrain T/a 31x10.50-15 Tires on 2040-parts.com

One Lap of the Web: Porsche 959s, the Alfa Romeo 4C and the Mercedes-Benz A45 AMG vs. the BMW M135i

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- When initially produced to satisfy FIA homologation requirements in 1986, the Porsche 959 was the world's fastest street-legal production car.

BMW i3 Range Extender engine adds 10% to the price

BMW i3 Range Extender engine adds 10% to the price The BMW i3 – BMW’s first foray in to a world of electric cars – was officially revealed in July – and due on sale in 2014 – and seems, by electric car standards, to be almost affordable. At a starting price of £30,680 – £25,680 after the taxpayer bribe for EV buyers – it’s no more expensive than other electric cars and does come with some clever technology – and the BMW badge – that will help it move out of showrooms. But as we reported as far back as 2011, the BMW i3 is to get a range-extender option – a small petrol engine that kicks in to recharge the batteries when they get low – which will make the i3 a much more practical proposition.

Mazda MX-5 Miata

For only the fourth time since the first was introduced 25 years ago - when it reignited the small sports car market - there's a new Mazda MX-5 Miata. Mazda's aim this time was to strip away much of the bulk that had accumulated over the years, recapturing the essence of a compact, light and affordable roadster. The subtext is that the MX-5 Miata has become a car more often bought by women in their 60s, rather than the young males it was originally intended for.