Formula 1 drivers have warned that they will boycott the German Grand Prix if there is any repeat of the Silverstone tyre problems over the weekend.
"The Grand Prix Drivers’ Association wish to express their deepest concerns about the events that took place at Silverstone.
“We trust that the changes made to the tyres will have the desired results and that similar problems will not occur during the German Grand Prix weekend.
“We are ready to drive our cars to the limit, as we always do, and as it is expected by our teams, sponsors and fans.
“However, the drivers have decided that, if similar problems should manifest themselves during the German Grand Prix, we shall immediately withdraw from the event, as this avoidable problem with the tyres endangers again the lives of drivers, marshals and fans.”