well its my opinion, and i'm not professional, so sorry if my views are different to yours. Ive picked myself up 2005 R1, OMG so sweet, anyway, the bike has done so little kms that it still has the standard DUNLOP SPORTMAX front and rears. (are they the standards?) Ive been riding my 03 R6 for the past few years and the last few sets of tyres i have been using at the "Pirelli Diablo Corsa III", great tyres, when i ride i just seem to feel that much more stuck to the road, im not the most aggressive rider, but i can easily get my knee down on most corners when i want to, so i use up a fair bit of the whole tyre. now when i have been using the Pirelli's i have never noticed any slip out on cornering (this is in dry conditions) and i reccomend the tyres to anyone, however they are very soft, so you wont get much life out of them. back to the R1, When riding with the Dunlop Sportmax's on a few corners when i have been getting low, i have felt the rear slip once or twice, when i try and get the front up, the rear wheel spins out very easily. I consider my throttle control to be quite good, (but maybe it's not?) I can get the front up on my R6 easily, but using the same technique and speed on my r1, the back just spins. (bad tyres or just the fact that its more powerful?) so i have put it down to the tyres, even though they have heaps of tread left, I'm going to swap them, i think i will just feel safer when riding. like i said, NOT THE BEST RIDER, and when the back starts to slip when powering out of a corner,,,,,,, well, i just don't want it to. So for those with R1's, if i'm not going to get the Pirelli Diablo Corsa III again, what should i get?