Abstract: A tire has a first and second beads mounted on a rim. A first sidewall extends upward from the first bead to a first edge of a horizontal tread face located substantially directly above the first bead. A second sidewall extends upward from the second bead and curves toward a second edge of the tread face such that a curved tire surface is provided between the second bead and the second edge of the narrow tread face. Two tires are mounted on a rear motorcycle axle such that a gap is defined between first sidewalls of the right and left tires, and a drive extends through the gap to the axle. When the motorcycle is leaned in a curve, one of the wheels is above the ground surface, and the motorcycle is supported on the curved tire surface of the other tire.

Abstract: A foreign matter removing device which is capable of reliably removing foreign matter from between a double tire includes at least one foreign matter removing member interposed in a space of at least one double tire. A dimension in a width direction of the foreign matter removing member in a vicinity of a tip end portion thereof is larger than a dimension in a diameter direction from an outer peripheral portion of a hub, on which the double tire is fitted, to an outer peripheral portion of a rim of at least the one double tire.

Abstract: A heavy duty dual tire assembly (10) for mounting on dual rims (2) is disclosed. The assembly has a pair of tires (14) and a pair of separate removable annular tread belts (12) for mounting over both tires (14) the pair of separate removable annual tread belts (12) bridge the gap between the tires (10) when they are laterally adjacent and coaxially aligned by mounting on a dual rim. In one embodiment there is a separated tread belt spacer (9) that is interposed between tread belts (12) to, in combination with the tread belts, bridge the gap between the tires.