Compagnie Generale Des Etablissements Michelin

Tomotake Uchida

Tomoya Sakurada

Gael Roty

Gaël Roty

Ryosuke Yamamoto

Masayuki Maesaka

Kazutaka Yokokawa

A tire having a tread comprising at least two radially superposed portions which comprise a radially external portion being made of a first rubber composition (FC), and a radially internal portion being made of a second rubber composition (SC); the tread comprising a plurality of tread pattern elements () delimited by cut-outs (); the tread pattern elements () respectively comprising at least one lateral face () and a contact surface () intended to come into contact with the ground during rolling; the external portion of the tread pattern elements () being at least partially covered on at least one of the lateral face(s) () with a layer of a third rubber composition (TC).

Tire comprising a tread

The tread is provided with a plurality of grooves and/or a plurality of incisions. The tread also has rubber layers laminated in a radial orientation. One rubber layer has a cap rubber layer and a base rubber layer. A modulus G* of the rubber composition constituting the base rubber layer is no more than 2 MPa at &#x2212;10&#xb0; C. with imposed shear stress of 0.25 MPa and is at least 0.7 MPa at 40&#xb0; C. with imposed shear stress of 0.70 MPa. A modulus G* of the rubber composition constituting the cap rubber layer is at least 1 MPa higher than the modulus G* of the the base rubber layer at &#x2212;10&#xb0; C. with imposed shear stress of 0.25 MPa and is less than the modulus G* of the rubber composition at 40&#xb0; C. with imposed shear stress of 0.70 MPa.

Tread made from multi compounds

Growing community of inventors

Tokyo, Japan

Tomotake Uchida