Formula One drivers have threatened to boycott the German Grand Prix this weekend if a repeat of the problems at Silverstone are experienced.

Four drivers suffered blown tyres during a dramatic British Grand Prix on Sunday at Silverstone, forcing Pirelli to revert to Kevlar-belted tyres for this weekend’s race at the Nurburgring. They will also be introducing a new tyre for the remainder of the season.

Although Pirelli are confident that bringing back the Kevlar-belted tyres this weekend will ensure that a repeat of the Silverstone fiasco is not suffered, drivers are not fully satisfied and the Grand Prix Drivers’ Association, which represents the majority of drivers, said its members wanted to express their “deepest concerns”.

In a statement following a meeting of the GPDA on Thursday evening, a statement was issued stating that should similar problems occur during the German GP weekend, they would withdraw from the event in the interest of safety.

The statement read:

“The drivers of 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 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.”

Fernando Alonso spoke earlier on Thursday about the dangerous situation he found himself in behind Sergio Perez who suffered a blow out. “I committed to overtake Sergio on the left,” he said, “I was lucky because maybe if I chose the right, everything would hit my helmet. There are pieces of steel coming at 300kph so it would be like a bullet or a knife.” He added, “Pirelli made some changes. We trust them. We think they solve the problem.”

Pirelli issued a statement on Tuesday blaming the failures on the teams but Jenson Button said following the GPDA meeting that “We followed all of Pirelli’s guidelines – on both cars.”

Pictures have been posted on the Internet showing that tyre swapping was taking place but no further comment has been made about this by the drivers.