Mechanics for the Caterham-Renault Formula One team check tyres in the paddock for the Chinese Grand Prix on April 11, 2012. Formula One looks set to come under fresh pressure to shelve Bahrain’s grand prix this week in China, where preparations have been rocked by ongoing protests and a hunger strike in the desert state. AFP PHOTO/Peter PARKS (Photo credit should read PETER PARKS/AFP/GettyImages)