I agree with Chuckie, Thats what we run on our z400 and they have been great tires, even found a nail in one that I patched and its still holding air and perform like a champ, slide when you want it and hook up on anything when you need it. I have been thinking that I should run a little taller tire just because the 400 does slide the rear skid plate in some areas and my lt 250 doesent have a rear skid yet (and its not quite running either)