Just put on new Z8's front and rear and I pumped them up to 42psi per factory bike specs (1300st) and I didn't like the way the bike felt. It wanted to fall into turns way to easy and was not real sure footed on windy days in straight stretches. I lowed the pressure to 38psi front and 40psi rear and it feels way better to me. I'm sure if your driving skill is great, You would love these tires on the twistys. I am still learning the bike and have 1200 miles on the new tires. Can't comment on how they compare to other tires or how they do in the rain yet. So far I like them....will update later
