Earlier in the season , a spate of worryingly delaminations -- where the tire layers separate -- had already led to worries the tires were not safe . A new Grand Prix of America is added to the 2014 Formula One calendar . The New Jersey race is scheduled for 1 June but given provisional status . Races in Mexico and Austria are also added to F1 tour . - 24
A new Grand Prix of America is added to the 2014 Formula One calendar . The New Jersey race is scheduled for 1 June but given provisional status . Races in Mexico and Austria are also added to F1 tour . - 24