Narain Karthikeyan ends single seater career, joins Jenson Button in sports car racing

India's first Formula 1 driver Narain Karthikeyan on Friday made a full-time switch to sports car racing, ending a two-decade old singe seater career after securing a drive in Japan's Super GT series.

The 41-year-old will be competing with the likes of former Formula 1 world champion Jenson Button, who made his Super GT debut last year. Karthikeyan's decision to switch to sports cars comes after spending five seasons in Super Formula. He last raced in Formula 1 back in 2012.

The Indian was convinced about the quality of a Super GT car after a successful test with the Honda-backed Nakajima Racing squad in Sepang last month.

However, a Super GT car is drastically different to drive than a single seater, particularly through corners.

"The weight difference between a single seater like a Super Formula car and a Super GT is quite significant," said Karthikeyan.

He spent four days working closely with the Dunlop tyre engineers, testing multiple tyre constructions on the Nakajima Honda ...