The V8 Supercars Commission will allocate an additional set of practice tyres for each car at all remaining SuperSprint events, and the Castrol EDGE Townsville 400.

The Commission added the extra sets during a specially convened meeting at the NP300 Nissan Navara Winton SuperSprint which begins today, and Dunlop has agreed to increase its mid-season production schedule to accommodate the requirements.

"Dunlop have proven to be a great partner by negotiating with their Japanese plant to make it happen," V8 Supercars Director of Competition Damien White said this morning.

"Not only will this give drivers and teams more valuable set-up time ahead of all SuperSprint events, it provides a sensible form guide for the fans before we hit qualifying on Saturday."

As with the 2014 rules, and to ensure the teams don't reserve them for the following day, the tyres will be returned at the conclusion of each Friday practice. They are returned to teams post-event to be added to each teams overall tyre bank.

"The Friday hand back philosophy ensures the teams don't save them for the following day and Friday will absolutely deliver a meaningful outcome," White explained.

"By getting them back after the event they can use them in practice at the following event, along with another new 'Friday' set. This means over time teams will build a very useful bank of Friday tyres."

While the Commission voted in favour of extra rubber to improve the quality and intent of Friday practice, it made no change to the Saturday race formats.