FLAT PNEUMATIC RADIAL TIRE

PURPOSE:To provide turning performance and so forth as a particular cord tensile initial elastic modulus by making a ratio of cross section height to width particular, forming two of three layers of a textile cord at the identical angle to each other in the opposite direction, between which equator line is put, and forming the other one into a triangle with the two layers to be layered at a particular angle. CONSTITUTION:A belt B disposed outwards in the radial direction of a radial carcass R over the overall width of a tread T in a tire where a ratio of cross section width to height is 70% or less consists of at least three layers, or rubber- covered textile cord layers 1, 2 and 3. Its tensile initial elastic modulus is 2,000kg/mm or more in a stranded cord condition. Two layers 2 and 3 on the tread T side of three layers are layered at 20-40 degree to the tire peripheral direction so that the cord direction may be at the idential angle to each other in the opposite direction, between which equator line is put, and the other one is layered at 55-90 degree to the tire peripheral direction so that it may form a triangle structure with the cords of the layers 2, 3.