I’ve just been out on my Thruxton 1200 with a new Pirelli Diablo on the front, immediate improvement, steering has more feel, drops into corners easily and generally feels more precise, the original tyre had done 3k miles so you have to factor some of this being that the original tyre had wear but I think that the sharper profile of the Diablo has more to do with the improvement, certainly regarding the improved drop in on cornering, anyway that’s my 5p worth, I’d definitely recommend Diablo’s at your next tyre change.