A bicycle wheel rim used for mounting a plurality of spokes thereon includes spaced left and right annular tire retaining walls adapted for retaining a bicycle tire therebetween, and an annular spoke mounting wall. Each of the tire retaining walls has an inner edge proximate to a central point of the wheel rim, and an outer edge distal to the central point of the wheel rim. The spoke mounting wall interconnects the inner edges of the tire retaining walls, and has a central bridging portion with left and right terminating edges, a left corner block which interconnects the inner edge of the left tire retaining wall and the left terminating edge of the bridging portion and which is formed with a set of left spoke fastening holes, and a right corner block which interconnects the inner edge of the right tire retaining wall and the right terminating edge of the bridging portion and which is formed with a set of right spoke fastening holes that are staggered with respect to the left spoke fastening holes.