PNEUMATIC RADIAL TIRE

摘要

while maintaining excellent wear resistance of the tread surface, the pneumatic effectively to improve the durability of the belt radial is to provide a tire, a pair of bead cores in a mooring 4 at the outer side of the crown region of the carcass 5 of a toroidal shape on the inner side of the tread rubber (7), extending in the circumferential direction by the reinforcing elements a belt reinforcing layer consisting of two layers (8a, 8b) and, respectively, of the tire equatorial plane (E) in respect of the belt layer 2, a layer made of each of the belt cord are opposite to each other extend (9a, 9b) belt 10 is formed of a and, sequentially disposed from the radial inner side and, on the second floor belt layer width of the belt cord of the interwoven region (9a, 9b) w ₁ 65% of the tire width W to 90%, belt reinforcement layer (8a, 8b) of the maximum width w ₀ of the tire width while a 60% to 85% of W, on the equatorial plane of the belt in the charged position Thai regular internal pressure of the tire (10) of the radius (R ₀ ) and the radius of the belt side edge position (R ₁ ) of the difference (R ₀ -R ₁ ) of the belt and the belt radius ratio of the half-width (w / 2) less than 0.06. ; pneumatic radial tire, carcass, tread part, bead, belt, belt reinforcement layer