A wheel assembly includes spaced first and second lateral supports. The first lateral support includes a first mount and the second lateral support includes a second mount that is axially aligned with the first mount. All space between the first mount and the second mount is devoid of any structural component that directly interconnects the first and second lateral supports. The wheel assembly also includes a circumferential rim structure that is adapted to support a tire. The first and second lateral supports attach to the rim structure at first and second locations, respectively, that are radially spaced from the first and second mounts, respectively. Vehicles and swing-arm assemblies including exemplary wheel assemblies are also provided.