Despite his concerns however, Coulthard insisted that tyre wear wasn't the only reason why some drivers were struggling on track – arguing that some teams were simply doing a better job than others with the situation as it currently is.
“Vettel complained after the race on Sunday that he was not driving to the limit of the car; he was driving to the limit of the tyres,” DC insisted. “The problem with that argument is that he had the same tyres as Alonso and Raikkonen, and they went faster. So trying to argue that it is all down to the tyres just does not stack up.
“The regulations are very tight, but different teams are having different problems - for example, Red Bull's limitation in Spain was the left front tyre; Mercedes' was the left rear. The bottom line is that under the regulations as they are, and on the same tyres, Ferrari
and Lotus - and particularly Alonso and Raikkonen - did a better job in Spain than Red Bull