| 摘要 |
A tire ( 1 ) with a radial carcass reinforcement ( 2 ) surmounted radially on the outside by a crown reinforcement ( 3 ) comprising at least two so-termed "working" plies ( 4, 5 ), this crown reinforcement ( 3 ) also comprising two additional meridian reinforcement plies ( 6, 7 ) of axial width Lm and Lm', the axially innermost ends of the said meridian reinforcement plies ( 6, 7 ) being a distance Lt apart, the said additional plies comprising a plurality of reinforcing elements that make an angle larger than 60° with the circumferential direction, the crown reinforcement ( 3 ) also comprising at least one circumferential reinforcement ( 8 ) whose reinforcing elements make an angle smaller than or equal to 10° with the equatorial plane, the tensile rigidity of the said circumferential reinforcement ( 8 ) in the circumferential direction in areas radially coincident with the meridian reinforcement plies ( 6, 7 ) being lower than the tensile rigidity of the said reinforcement in areas having no meridian reinforcement plies.
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