Vehicle wheel rim, vehicle wheel including such a wheel rim and method for producing such a wheel rim and vehicle wheel

A wheel rim defining an axis and inboard and outboard sides, the rim comprising:

• an outboard bead seat;
• an inboard bead seat;
• an annular well flank connected to the outboard bead seat and extending radially inwardly and towards the inboard side of the rim;
• and
• a transition portion defined between the well flank and the inboard bead seat, wherein the transition portion is formed by only three curved portions having a circumferential corrugated profile having:
• a circumferentially concave-shaped outboard groove connected to the well flank at a first tangency point, wherein the outboard groove defines inner-most radial dimension of the rim;
• a circumferentially convex-shaped ridge directly connected to the outboard groove at a second tangency point;
• and
• a circumferentially concave-shaped inboard groove directly connected to the ridge at a third tangency point, and wherein the inboard groove is connected to the inboard bead seat at a fourth tangency point.

A method for producing a vehicle wheel comprising the steps of:

• providing an annular rim defining an axis and inboard and outboard sides, the rim including:
• an outboard bead seat;
• an inboard bead seat;
• an annular well flank connected to the outboard bead seat and extending radially inwardly and towards the inboard side of the rim;
• and
• a transition portion defined between the well flank and the inboard bead seat, wherein the transition portion is produced by a flow forming process and is formed by only three curved portions having a circumferential corrugated profile having:
• a circumferentially concave-shaped outboard groove connected to the well flank at a first tangency point, wherein the outboard groove defines an inner-most radial dimension of the rim;
• a circumferentially convex-shaped ridge directly connected to the outboard groove at a second tangency point;
• and
• a circumferentially concave-shaped inboard groove directly connected to the ridge at a third tangency point, and wherein the inboard groove is connected to the inboard bead seat at a fourth tangency point;
• and
• securing a wheel disc to the rim to produce the vehicle wheel, wherein the wheel disc includes a hub located centrally within the wheel disc and having a plurality of bolt holes formed therein.