The K16GT comes with Z8 tyres, which really suit the bike. Dead stable at speed and really sticky in the curves. They have done 3,000 miles and still look good but they are prone to going down to the canvas in the centre while the rest looks good. I am off to Colditz Castle soon and don't think I can trust them. I am pretty gutted, but have just ordered a set of Pireli Angel A spec for the trip.