The trial of the new Alternative Tyre Allocation rules at this weekend's Hungarian Grand Prix has prompted some debate about whether or not the move to improve sustainability is the right direction.
For the Hungaroring weekend, F1 has reduced the number of dry tyre sets available to drivers from 13 to 11, with teams also forced to use the hard, medium and soft compounds in the three qualifying segments.
It is understood that the reduction of tyres needed for the weekend saves a total of 17 tonnes of equipment being shipped to each race.
While the tweaks appeared to spice up the battle for pole position on Saturday, there were criticisms from some drivers about how the lack of available tyres limited track action in practice on Friday.
Lewis Hamilton was one of many who reckoned that things could be improved, and questioned the sustainability push because of what he thought happened with wet tyres that never got used.
"I think when we're talking about sustainability, just taking one set of tyres or two sets of tyres away is not enough," he said. "Each weekend there's a lot of wet tyres that get thrown away, every single weekend."
Ferrari's Carlos Sainz added: "There's a lot of wet tyres they throw away on the weekend, and that's what we need to figure out. How can we do better there, rather than reduce the entertainment for the fans."
But Pirelli has explained how the drivers' claims over the wet tyres are wrong because unused wet weather tyres at European races are kept in play for following races.
Source: Autosport