To allow a pressure adjusting tool to be connected on either side of a disk section by providing air injection ports on both sides across the disk section.

An air injection ports 4, 5 are provided on both sides across a disk section 2. When either one on the surface side is used within air injection ports 4, 5 provided on both sides of this vehicle tire 1, pressure can be easily adjusted with the tire 1 stored and fixed in a trunk. A pressure gauge can be connected to the air injection port 4 to confirm air pressure, or the discharge port of an air compressor can be properly connected to the air injection port 4 by an air hose to inject air. When the tire l is mounted on a workbench or on the floor surface of a work place and the pressure gauge is connected, such consideration is not required that the tire 1 is set to direct one specific side of the air injection valves 4, 5 upward, and the work is facilitated.