A radial medium truck (RMT) tire has belt or breaker plies which are
reinforced by organic reinforcement cords or filaments. In one embodiment,
organic monofilaments are used in the belt or breaker plies which have the
following characteristics: at least 2,000 denier (2,200 dTex), a tenacity
of at least 3.5 g/denier (31 cN/Tex), an initial modulus of at least 30
g/denier (265 cN/Tex) and a shrinkage of at most 6%.