i know what you are talking about. i have the same tire on my 916 right now. the bike has magnesium rims on it and it still doesnt want to corner like my ss with a 160 and stock rims. once it is leaned over it feels like it is on rails, but when i have to lean over a little more to sharpen a corner it wants to fight me. the ss seems to just fall into a corner but is a lot less stable. i am going to try pirelli's on the 916 with a 180 rear soon. i notice the front just doesnt feel right when going into a corner either, it wants to slide with no warning. the super corsa's on the ss have never done this and seem to not need the warming the pilot sports do. for the street they seem to be a better tire. i also read a tire study and found that the pirelli is much lighter than some of the other brands. as much as 2lbs in some cases. when you calculate the rotating mass, by changing tires it is like getting a free set of magnesium rims. if you already have mags, going with a heavy tire can defeat the gains you get with the mags. i think the heaviest were the dunlop then the michelin, then bridgstone, then pirelli was the lightest. just somthing to think about when going with a new set or rubber.