I am using the Desser 850x6 (22") smoothie tires for the reasons stated by airlina and jiott. I don't think there is anywhere I would go that these tires wouldn't be sufficient. They hold up very well with landing on pavement which is over 50% of my landings.
I run them from 11-14 psi and have experienced a little slippage. I put slippage marks on tire and have gotten 1/4 to 3/8" movement in the course of a year (I fix it at the annual inspection). Like others have said . . . watch the valve stem.
BTW I got rid of the normal 8.50x6 tires that came with my plane (I bought mine as an unfinished project). Again, this was at the recommendation of others on this forum. They were very heavy and stiff.