Marlboro Ducati's Valentino Rossi has lent his weight to the call for Bridgestone to bring more tyres to each MotoGP round after he and three other riders, including Casey Stoner, crashed in the opening laps of first practice at the Sachsenring today.

The Doctor once again suffered from a lack of temperature in his front tyre but said that even after seven laps, his rear looked brand new. He called for Bridgestone to bring more soft tyres and increase the amount of choice.

"With our bike we have some trouble finding some good temperature in the front tyre and I lose the front because it was too cold and on the right side if you look at the tyre it looks brand new even after seven laps," said the nine-time world champion

"We have better rubber on the right side of the rear so you can change direction more fast but after that the problem becomes the front. Also, the other guys crash in the same way. I think that we need more tyre. First we need more number of tyres, more quantity, but the bigger problem is we need one more choice.

"One on the front and one more choice on the rear because a lot of times you have to start the practice already with the hard tyre but the temperature is low and it become very dangerous like here and in assen so all the crashes arrive after two or three minutes."