Casey Stoner kept the pressure on his MotoGP rivals with two dominant practice sessions at Silverstone on Friday.
Winner of three of the five races this year, and now within seven points of title leader Jorge Lorenzo, the Repsol Honda rider proved untouchable in both dry and wet conditions.
Stoner was almost on lap-record pace by the end of the first 45-minutes of track action, when he snatched a 0.659sec advantage over fellow factory HRC rider Marco Simoncelli, then increased his lead to 0.797sec during the drying afternoon session.
"I'm pretty happy with how the day has gone after mixed conditions, we've seen a dry track, a wet track and then a 50/50 track so it's been interesting to have these variants throughout the day, but in general the bike has worked well," said Stoner, who was making major gain during the final sector of the 5.9km Silverstone lap.
"We used both bikes today and in the wet one set up seems to work pretty well, but with wet weather forecast for the rest of the weekend we still have some things we want to improve to make the bike work better giving us some more edge grip and traction.
"The track seems pretty good but some of the older sections are retaining a lot more water which is causing difficulties as in some areas you could be out on slicks but other parts are drenched.
"Looking at the way the wet tyres are working at the moment we shouldn't have too much of a problem though, the track seems to be kind on the Bridgestone tyres and not destroying them and even after this afternoon's session we didn't have a too big a problem with them".
Team-mate Andrea Dovizioso felt much more comfortable in the dry conditions in FP1, when he was fifth fastest, before dropping one place in FP2.
“This afternoon the track conditions were difficult especially because there are different types of tarmac which drain differently," said Dovi. "For example, T1 and T4 were draining very well, whilst it was wet in T2 and T3. It took me a while to find the feeling and we struggled with the traction control set up.
"We worked on the different settings and I think that we can improve tomorrow. It will be important to practice again in dry conditions tomorrow as we did this morning in FP1, but all in all FP2 was also important because we may find similar conditions in the race”.
Team-mate Dani Pedrosa is missing his second event in a row, due to a broken collarbone.