A cycle wheel with an axis of rotation and having a median plane perpendicular to the axis, the wheel comprising a rim and a pneumatic tire, in which: the rim includes an upper bridge and at least one left lateral flange extending from the upper bridge and extending radially outward so as to move away from the axis, the upper bridge including a stop positioned on the same side as the left lateral flange in relation to the median plane, so that the left lateral flange and the stop demarcate a left channel, the left channel having, along a radial plane, an opening having an amplitude, a length greater than the opening, the pneumatic tire comprising a casing and at least one non-deformable left bead which, along a radial plane, has a length, a thickness less than the length of the bead, the length of the bead being greater than the amplitude of the opening, the thickness of the bead being less than or equal to the amplitude of the opening; the surface area of the bead cross section being less than the surface area of the channel cross section, and the bead having a transverse modulus between 50 Mpa and 2000 Mpa.