| abstract |
The invention relates to a tire including a crown reinforcement consisting of at least two working crown plies (41, 43) of reinforcement elements, and at least one ply (42) of circumferential reinforcement elements, a ply C being arranged between the ends of the working crown plies. According to the invention, the tread has at least one longitudinal indentation (8), the depth, measured on a new tire, of said at least one longitudinal indentation being no less than 40% of the thickness of the tread, the ratio of the width measured at the bottom of said at least one longitudinal indentation to the width measured on the surface of the tread of said at least one longitudinal indentation being strictly greater than 2, and the modulus of elasticity under tension at 10% elongation of the ply C is less than 8 MPa, the maximum value of tan(8), denoted tan(8) max , of the ply C being less than 0.100. FIGURE 2 |