Petrov told to lose weight

Renault has told its rookie driver Vitaly Petrov to lose some weight. The German publication Auto Motor und Sport said Petrov, who is bringing €15 million to the team in 2010, is significantly heavier than his teammate Robert Kubica. Kubica and Petrov are both among F1's tallest drivers but the report said Petrov weighs 10 kilograms more than the slight Pole.