Tyre having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of reinforcing elements (41, 43), each formed of reinforcing elements inserted between two calendering layers of rubber compound, itself capped radially with a tread, said tread being joined to two beads via two sidewalls, the crown reinforcement comprising at least one layer of circumferential reinforcing elements, said tread comprising a tread surface intended to come into contact with a road surface and form a contact surface, the tensile elastic modulus at 10% elongation of at least one calendering layer of at least one working crown layer (41, 43) being greater than 9 MPa, the measurement of said modulus being performed under tension according to standard AFNOR-NFT-46002 of September 1988 in normal temperature and relative humidity conditions according to standard AFNOR-NFT-40101 of December 1979 and the maximum value of tan(δ), denoted tan(δ)max, of said at least one calendering layer of at least one working crown layer (41, 43) being less than 0.100, the measurement of tan(δ) being performed according to Standard ASTM D 5992-96, characterized in that: - said tread consists of at least one central part extending at least in the region of the equatorial plane and two axially exterior parts and has, at least in said central part, at least one cut, - in that said at least one cut consists of at least one first part and of at least one second part, which are contiguous and each lie flush with the surface of the tread, - in that the depth, measured on a new tyre in at least said central part, of said at least one first part and at least one second part is greater than or equal to 40% of the thickness of the tread, - in that the ratio of the width (D f ') measured at the bottom of said at least one first part to the width (d s ') measured at the surface of the tread on a new tyre of said at least one first part is strictly greater than 2, - in that the ratio of the width (d s) measured at the surface of the tread on a new tyre of said at least one second part to the width (D f) measured at the bottom of said at least one second part is greater than or equal to 1. - said tread consists of at least one central part extending at least in the region of the equatorial plane and two axially exterior parts and has, at least in said central part, at least one cut, - in that said at least one cut consists of at least one first part and of at least one second part, which are contiguous and each lie flush with the surface of the tread, - in that the depth, measured on a new tyre in at least said central part, of said at least one first part and at least one second part is greater than or equal to 40% of the thickness of the tread, - in that the ratio of the width (D f ') measured at the bottom of said at least one first part to the width (d s ') measured at the surface of the tread on a new tyre of said at least one first part is strictly greater than 2, - in that the ratio of the width (d s) measured at the surface of the tread on a new tyre of said at least one second part to the width (D f) measured at the bottom of said at least one second part is greater than or equal to 1.