Red Bull Racing is to make changes to its pit-stop procedures following the German Grand Prix last weekend, where Mark Webber’s right-rear wheel flew off and injured an FOM cameraman.

In the aftermath of the race at the Nurburgring, the Milton Keynes-based squad launched an investigation, the results of which have now been circulated to the teams and the FIA, the sports governing body.

The issue occurred on Sunday when the mechanic on the right-rear went to remove a cross-threaded wheel nut and put on a replacement. As he did so the wheelgun slipped in his hand and he accidentally triggered the 'go' signal to the front jack man. The car then left, even though the right-rear wheel was not properly secured.

To prevent a repeat, Red Bull will now revise its wheelguns to ensure the 'go' signal cannot be triggered by such a mistake.

The front jack man has also been told that if there is a problem, he should not let the car go until given clear signals all is ready.