The tire armor is a readily removable separate annular element extending about the major circumference of the tire and interposed between the inner tube and casing. This is generally known as a "liner" or "interliner".
(1) Note. For such armor permanently secured to the outer surface of the inner tube, see this class, subclass 195.
(2) Note. For such armor permanently secured to the inner surface of the casing, see this class, subclass 196.