TIRES AND WHEELS COMPRISING ADJUSTABLE STIFFENING LINES, AND MACHINES HAVING SAME

A tire has a carcass with a tread, a bead, a shoulder, and a sidewall. The bead, shoulder, and sidewall partially define a first internal cavity. At least one stiffening line for a pressurized fluid with a second cavity is within the carcass. The second cavity is aligned in an approximately transverse direction relative to the periphery of the tire. The second cavity is connectable to pressurized fluid supply system and can be inflated or deflated to adjust the stiffness of the tire. The stiffening lines may be inflated using a hydraulic fluid to increase the stiffness of the tire. Related wheels, vehicles, and methods are also disclosed.