I just replaced my stock front and rear pirellis after 2400 miles . I was amazed as to how much better this bike rides now . It was so much smoother and easier to ride . I was amazed as to how much more comfortabe and precise the turning is. I scrubbed in the new set of pirelli’s and almost cleared the entire rear tire from edge to edge on day one and I wasn’t even trying . I decided to put a new front tire in as well but I still had some life left in it .... very happy I did . I would recommend def changing tires in sets . It has made a huge difference .....It was extremely easy to get the bike to turn in again. It was like having a brand new bike again. I think most will agree after you gain some seat time and get a new fresh of rubber this bike justs gets better and better !