Racer, Valentino Rossi has criticized Bridgestone over its decision to use its hardest-specification rear tyre in the Indianapolis Grand Prix instead of softer onces, as recommended by him.

He said that the requested the type company to choose softer type for the Indianapolis Grand Prix as the newly resurfaced infield section would react better to them rather than harder tyres.

"I already talked to Bridgestone in Mugello to modify the allocation for here because the rubber we have on the harder tyre is completely useless. But they don't modify it so we have to manage with just five or six tyres for the weekend," he said.

The racer said that Ducati has made significant progress with its GP11.1, since it was launched at the Dutch TT in June but he is still struggling with front-end grip.