Jolyon Palmer says a change of floor on his Renault Formula 1 car for Russian Grand Prix qualifying has solved the problems that caused his 'catastrophic' loss of form.The British rookie described the previous race in China as the worst weekend of his motorsport career, as he finished last and...

Jolyon Palmer fears he and the Renault Formula 1 team might be unable to fix his oversteer problems during the Russian Grand Prix weekend.The 25-year-old described the Chinese GP two weeks ago as "maybe my worst ever as a racing driver" after battling with car problems that the team has...