When the race direction permits the use of rain tyres on the grid, it usually means a nerve-wracking start for the drivers of the Porsche Sixt Carrera Cup Deutschland. That was certainly the case on Saturday at Circuit Zandvoort.When the race direction permits the use of rain tyres on the grid, it usually means a nerve-wracking start for the drivers of the Porsche Sixt Carrera Cup Deutschland. That was certainly the case on Saturday at Circuit Zandvoort.