Tyre choice between Pirelli and Michelin

With teams hoping to make a final decision on 2011 rubber in the next few days, having been unable to commit themselves during a meeting at the Monaco Grand Prix, Domenicali has said that Avon Cooper and Bridgestone have now been discounted.

"No decision has been taken yet," said Domenicali. "I think another week and maybe by next weekend hopefully we will be able to find a solution. There are still only two possibilities - Michelin and Pirelli. I don't see any other option."

Although Pirelli had emerged as a clear favourite over the Monaco GP weekend, Michelin's offer - in both technical and commercial terms - is still attractive enough for teams to be unsure about which direction they want to go in.

Further analysis of the terms over the next few days - with clarification from both manufacturers on certain issues - should help teams make their final call and may yet make Michelin the preferred choice.

Renault team principal Eric Boullier said time was now of the essence to get the matter sorted.

When asked by AUTOSPORT if the matter should be settled by the Turkish Grand Prix, he said: "It has to be, because I think there is a technical issue that if we wait too late then nothing will be ready for next year. It has to be done by Turkey."