Tire having improved dynamic properties

Tire with a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of reinforcing elements, crossed from one layer to the other making with the circumferential direction angles comprised between 10° and 45°, a first layer of polymer compound being in contact with at least one working crown layer and in contact with the carcass reinforcement, said first layer of polymer compound extending axially as far as at least the axial end of the tread, said tread radially capping the crown reinforcement and being connected to two beads by two sidewalls, wherein the complex dynamic shear modulus, measured at 10% and 60° C. on the return cycle, of said first layer of polymer compound is greater than 1.35 MPa, wherein the maximum value of tan(δ), denoted tan(δ)max, of the first layer of polymer compound is less than 0.100,

• the tire further comprises a second layer of polymer compound axially in contact with the first layer of polymer compound radially between the carcass reinforcement and the radially innermost layer of reinforcing elements of the crown reinforcement, and
• wherein the complex dynamic shear modulus, measured at 10% and 60° C. on the return cycle, of said second layer of polymer compound is greater than 1.35 MPa.