Mercedes have insisted that Lewis Hamilton's early stoppage during Practice Two for the United States GP was merely precautionary – but admitted that unreliability remains an ongoing concern. For the 14th time in 17 Practice Two sessions this season, Hamilton topped the close-of-play Friday timesheets at the Circuit of Americas by a mere three-thousandths of a second ahead of team-mate and title rival Nico Rosberg. But of greater concern to Hamilton will have been the hydraulic issue which meant he had to miss the final fifteen minutes of the session and limited him to just a couple of laps in race simulation mode."There was fluid on the floor, a leak of some kind, but I don't...
Full Story »