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Formula 1 teams are set to be asked once again to approve a tweak to next year's tyre regulations, so Pirelli do not have to take wasted sets of rubber to every race.

Pirelli has made a push to change the tyre allocation numbers for 2012, because after every race weekend each driver is left with an unused set of the harder compound rubber.

With these tyres already having been mounted on hubs pre-event, once they have been removed on Sunday night they have to be destroyed.

As previously reported, teams have been reluctant to accept that change so far - but Pirelli motorsport director Paul Hembery has vowed to make another effort to convince teams of the need to alter the rules.

"They would like us to take 2,500 tyres around the world all year and not use them..." said Hembery about the teams, when asked by AUTOSPORT on the status of the 2012 rule change push.

"There is no movement on it yet, and I will have a go with the teams again. We need to go with the team principals and give them all the facts from the season so far, and say; maybe we can use them on Friday, so teams have an extra set on Friday morning.

"They do a lot of development work on a Friday so maybe that is a way of doing it. I am sure common sense will prevail."

Pirelli is devoting a lot of effort to thinking about next year's tyre situation and, with the title fight set to be finished after this weekend's Japanese GP, Hembery has suggested his company may go ultra aggressive with its tyre choice for the rest of the campaign to see what impact it has on the racing.

Already he thinks Pirelli has opted for a radical choice for Korea - to see if that will force teams to racing on the harder compound choice - which will be the 'soft' there.

"We want to push people to running on the soft, and try and see what happens," he said. "It might be a four stop, but we have said all along that we are aiming for two or three. We have had quite a few twos, we had one or two fours in a season, and it averages out.

"We don't have testing so sometimes we are going to push things, and it will make it easier if the championship is decided. We need to understand that for next season to make our choice aggressive again."