F1's drivers have warned that they will boycott the German Grand Prix this weekend if there is a repeat of the tyre issues that emerged at Silverstone.
The Grand Prix Drivers' Association issued a statement on Thursday evening ahead of the first on-track action of the weekend in which it made clear its feelings about the current tyre situation, which came to a head following multiple failures at Silverstone.
While Pirelli is to bring new Kevlar-belted tyres to the Nurburgring to ensure there is no repeat of the problems faced at Silverstone, the drivers have made clear their feelings by insisting they won't race if further issues emerge.
It raises the serious prospect of a repeat of what happened at Indianapolis back in 2005, when 14 of the 20 drivers – those using Michelin tyres – refused to race after issues emerged with their tyres during Friday practice.
"The drivers of the Grand Prix Drivers' Association wish to express their deepest concerns about the events that took place at Silverstone," a statement issued by the drivers read. "We trust that the changes made to the tyres will have the desired results and that similar problems will not occur during the German GP 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 GP, we shall immediately withdraw from the event, as this avoidable problem with the tyres endangers again the lives of drivers, marshals and fans."