Nico Rosberg finished fastest in an opening practice session for Sunday's Chinese Grand Prix that was overshadowed by three separate tyre failures. Felipe Massa encountered two problems with the rear left of his Williams, while the Renault of Kevin Magnussen also suffered the same issue. Pirelli, Formula One's sole tyre manufacturer, insisted that Massa's problem was not a puncture, rather an issue with his car, while an investigation into Magnussen's blow-out is ongoing. The early suggestions are that the Dane's tyre failure, which occurred on the back straight of the Shanghai International Circuit where the cars approach speeds of up to 200mph, was caused by on-track debris. 'The...
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