Repsol Honda's Casey Stoner has again hit out at at the performance difference between the MotoGP prototypes and CRT machinery, saying that on all of his fast laps he was help up by slower machinery.

Despite setting second-fastest time and going underneath his own outright lap record at the track, the forthright Aussie was disappointed not to bag pole position and doesn't yet know which tyre he will use in the race.

“I'm disappointed as I think we definitely had the potential for pole position. We spent most of the session with the hard tyre trying to improve our pace. We've been struggling with it all season when the temperatures aren't high enough to get it working and we had made a few steps and weren't too far off the pace," said Stoner.

"Then we put on the soft tyre and unfortunately we never got a clean lap. There was always a CRT bike in the way and considering we're three, four seconds a lap quicker than them, you come up on them pretty quick, no matter how big a gap you give them.

"Every lap was spoiled, which is very frustrating as I really feel we could have been on pole, but we'll have to settle for where we are. Tyre choice for the race will depend on the weather conditions tomorrow. I think we have the pace and longevity in the tyre for the soft, but if it's hot then we may have to try and make the hard work.”