Wheel Disc for a Disc Wheel

A wheel disc for a wheel with an essentially radially extending hub fitting flange and an essentially cylindrical disc edge being joinable to a wheel rim, and with a transition region extending between the hub fitting flange and the disc edge, wherein the transition region is subdivided into at least five segments (AI to V) passing into each other or into the hub fitting flange or the disc edge, each of which has an outer end situated closer to the hub fitting flange and an inner end situated closer to the disc edge, wherein the segments have a curvature at least on a partial region of their length between their outer end and their inner end and the curvatures of neighbouring segments have different directions of curvature, wherein the individual segments have at their inner ends a larger radial distance from an axis of rotation of the wheel disc than at their outer ends and wherein the wheel disc in its transition region has a variable material thickness, and wherein the ratios of the material thicknesses of the individual segments at their respective inner ends to their respective outer ends and the ratio of their lengths in the axial direction of the wheel disc to their heights in the radial direction are chosen as follows:

• Material thickness of
• inner end
• Material thickness of
• Length in axial direction
• outer end
• Height in radial direction
• Segment AI
• 0.45-0.7
• 0.9-1.1
• (between hub fitting
• flange and segment
• AII)
• Segment AII
• 0.7-1.0
• 1.6-1.9
• (between AI and AIII)
• Segment AIII
• 0.9-1.25
• 2.5-2.8
• (between AII and AIV)
• Segment AIV
• 0.9-1.25
• 2.8-3.1
• (between AIII and AV)
• Segment AV
• 0.7-1.15
• 6.0-6.8
• (between AIV and disc
• edge)