I love my Ricksons!
for long-lasting smooth ride with, primarily, pavement as the surface, I cannot say enough nice things about the Goodyear Unisteel 159's (I call'em my schoolbus tires)
They've been on for a little over 80K, and still have some tread left before I need a regroove. (they can be regrooved, I guess, one time. I'd be surprised, but happy as a clam, if they could do it twice) Oo.
They're steel belted, but not just in the tread, the steel fabric goes from bead to bead, up both sidewalls, and they weigh about 120lb each, with those big-ol' wheels... .
I also use them for mild trail use, when I go out shootin' in the desert. Sharp rocks don't bother them at all.
They also corner better than the stock Michelins, and give about another 1-1/2 inch of ground clearance...
I like'em!
