To provide a rim free to use a standard type valve body to be used for a bicycle wheel a tire of which has an inner tube by showing a simple and inexpensive structure, making it possible to easily and quickly operate in assembly and guaranteeing tight enclosure of a chamber between the tire and a rim outside peripheral wall.

The two ribs 6, 7 to give a ground for a tubeless tire by extending over the outside peripheral wall 3 is formed as the rim of the bicycle wheel of the tubeless tire includes a radiant direction inside peripheral wall 2, a radiant direction outside peripheral wall 3 and two circumferential side walls 4, 5 to connect the inside and outside peripheral walls 2, 3 to each other. The inside and outside peripheral walls 2, 3 have two holes 8, 9 facing against each other, a medium annular element 10 is equipped within a range of the holes, and the standard type valve main body to be normally used for the bicycle wheel having the inside tube is connected to the medium annular element 10.