We just installed these 21/800-6 4-ply AERO CLASSIC tires on our speedster IV.

Click here to see image (taken at 18psi): https://www.dropbox.com/s/qe9gag89c0knlt1/18psi.jpg?m

A friend who has a similar pair on his Rans7 recommended 18psi on pavement and around 10 for off-road. He said it gets squirrely above 20psi in terms of ground characteristics since the aircraft is 1000 lbs (not 1500+ like other draggers).

Dresser (where we got them) said 25-30, but when we had them at 25 earlier today they looked quite full.

Has anyone had these or similar on the kitfox, and if so what do you recommend for psi on pavement/dirt?

Thx!