Bicycle rim

A bicycle rim 24 includes side portions 50 with an outer portion 52 extending between the side portions 50 to form a pair of outer comers 62a, and a spoke attachment portion 54. The outer portion 52 includes a pair of ridges 62c spaced from the outer corners 62a. The ridges 62c preferably divide a pair of inclined surfaces 62b, 62d. The side portions 50 preferably include a pair of ground braking surfaces 60a with a pair of sloping surfaces 60c extending from the braking surfaces 60a to a pair of outer side surfaces 60d. A tubeless bicycle tire 26 is mounted on the rim 24 and includes a tread portion, a pair of sidewalls and a pair of beads 27c. Each bead 27c has an inner foot surface supported on one of the ridges 62c. Preferably, each bead 27c has a reinforcement member 29 with a center axis C1. Each ridge 62c is preferably located between one of the center axes C1 and an inner edge of one of the inner foot surfaces.