Beltless tyre for motor vehicles

A beltless tyre for motor vehicles, comprising:

• a carcass structure comprising two carcass plies, each of the two carcass plies comprising a plurality of parallel cords and having terminal flaps engaged with respective anchoring annular structures, the parallel cords of the two carcass plies being crossed with respect to each other and forming an intersection angle with respect to each other comprised between 20° and 60°;
• the parallel cords of each of the two carcass plies delimiting, with a circumferential direction of the tyre, a respective angle comprised between 60° and 80°;
• at least one reinforcing cord wound in a plurality of circumferential turns arranged in radially outer position with respect to the carcass structure;
• and
• a tread band applied in radially outer position with respect to the reinforcing cord,
• said at least one reinforcing cord having a percentage elongation, and
• said at least one reinforcing cord is configured to exhibit a tensile load-elongation relationship according to a curve having:
• a first region occurring at elongation values less than the percentage elongation, and
• a second region occurring at elongation values greater than the percentage elongation, and
• a third, connecting, region occurring at elongation values around the percentage elongation and placed between the first region and the second region, wherein a slope of the second region is greater than a slope of the first region.