Abstract: The invention relates to a run-flat low inflation pressure all terrain vehicle (ATV) tire 10,11, wherein the tire 10,11 has at least one pair of elastomeric inserts 42,46, one insert 42,46 extending radially inward from each tread edge 14,16 toward a bead core 26. The radially inner end of the insert is radially inward of an elastomeric apex 48 located above the respective bead cores 26. The bead cores 26 have a wide substantially flat radially inner base which when the tire 10,11 is mounted on a conventional ATV design rim enable the tire 10,11 to remain seated onto the rim even when operating without any inflation. The preferred tire 10,11 has a unique tread 12. The central portion 13 of the tread 12 has circumferential rows of blocks or lugs 94. The lugs of laterally adjacent rows in a central region 13 of the tread 12 are connected by tie bars 93 which when employed on these run-flat tires keeps the tread lugs 94 in ground contact even when the tire is operated uninflated.

Abstract: The invention discloses a wheel for roller skates, comprising: a tubular central body (1, 15) suited to lodge in its interior one or two bearings (2, 3) inserted in the supporting pivot (4) of said wheel and a toroidal covering layer (5) wrapped around said central body and co-axial with it, made of material suited to allow the rolling of said wheel on the contact surface. Said wheel presents at least one annular element made of shock-absorbing material, said annular element being placed between said central body (1, 15) and said toroidal covering layer (5), such as to permit the out-of-alignment between the central body and the toroidal covering layer, whenever said wheel bumps into the irregularities of the rolling surface.