Depends on which 20" wheels you have. If you have the same as mine, I would not recommend the Yokohama Parada Spec-X as there is ZERO rim protection. The rim juts out beyond the tire. If you have rims like the person posting above me, the Parada Spec-X are great tires.
Here are the rims you DON'T want to put Parada Spec-X on:
(Note these are OEM tires on this view, not the Parada Spec-X)