Compagnie Generale Des Etablissements Michelin

Mukul Gupta

Hichem Rehab

Nathalie Salgues

Jacques Besson

Tire 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&#xb0; and 45&#xb0;. A first layer S of polymer compound is in contact with at least one working crown layer and in contact with the carcass reinforcement, the first layer S of polymer compound extending axially as far as at least the axial end of the tread, the first layer S of compound polymer compound is made up of a filled elastomer blend having a macro dispersion coefficient Z greater than or equal to 65 and a maximum tan(&#x3b4;) value, denoted tan(&#x3b4;)max, less than 0.100 and its complex dynamic shear modulus G*, measured at 10% and 60&#xb0; C. on the return cycle is greater than 1.35 MPa.

Tire having improved dynamic properties

Tire 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&#xb0; and 45&#xb0;. A first layer S of polymer compound is in contact with at least one working crown layer and in contact with the carcass reinforcement, the said first layer S of polymer compound extending axially as far as at least the axial end of the tread and the complex dynamic shear modulus G*, measured at 10% and 60&#xb0; C. on the return cycle, of the first layer S of polymer compound is greater than 1.35 MPa.

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Clermont-Ferrand, France

Mukul Gupta