Tire having cantilevered sidewall shape and flexible support ring structure

A tire assembly, comprising:

• a tire having a tread, two shoulders, two sidewalls, and two bead portions,
• wherein the sidewalls are oriented radially between the respective shoulders and the respective bead portions,
• wherein the shoulders include a shoulder notch,
• wherein each of the sidewalls are cantilevered in shape, with each respective shoulder projecting axially outward from the entirety of its respective sidewall, and
• a flexible sidewall support structure oriented axially outward of and in contact with each sidewall and its respective bead portion,
• wherein the flexible sidewall support structure has an annular shape,
• wherein the flexible sidewall support structure is external to and separate from the tire,
• wherein the tire assembly is mounted upon a wheel having a two-part rim including a first rim half and a second rim half, and wherein each of the rim halves includes a rim flange,
• wherein the flexible sidewall support structure is clamped between the rim flange and the bead portion and bonded to one or more of the sidewalls, the bead portions, and the shoulders, and
• wherein a radially outer portion of the flexible panel lays in the shoulder notch.