Tire Element

A tire element, able to be wound onto a rim to constitute a non-pneumatic tire for a lightweight vehicle, the tire element comprising:

• tire a hollow tubular body having a longitudinal midline (Lm) of length L and comprising at least one polymer material,
• tire a crown, intended to come into contact with the ground, and connected by two sidewalls to two beads which are intended to collaborate with the rim,
• the assembly consisting of the crown, the two sidewalls and the two beads delimiting an open main interior cavity,
• wherein the tire element further comprises two stiffening portions at least partially disjointed with respect to one another in the open main interior cavity, so as to have mechanical behaviours that are essentially independent, wherein each stiffening portion extends in the open main interior cavity, from a transition zone between the bead and the sidewall as far as the vicinity of the middle of the crown, and delimits, with a portion of tire element facing the said stiffening portion, a closed secondary interior cavity, such that the main interior cavity is divided into two closed secondary cavities, separated from one another by a third secondary cavity open at the beads.