To enhance gripping force to the road surface of pressed snow road with grounding piece by exhausting snow/water outside of grounding surface through a space between supports supporting grounding piece by absorbing snow/water on the road to a plurality of cutouts between grounding pieces provided grounding surface side of tire main body with reducing grounding area to the road surface.

This tire has a plurality of pairs of supports 2 erected on a grounding surface of a tire main body 1 at predetermined intervals, and a plurality of pairs of grounding piece 3 each pair of which are integrally formed on the ends of the pair of supports and contact each other via a slit 4 to form a large space H between the supports and a cutout 5 between the grounding piece 3 at the position where the slit 4 is and they are opposite to each other, the neighboring pair of grounding piece 3 having a gap between them.