Tire comprising a tread containing reinforcing elements

A tire having an axis of rotation and a median plane perpendicular to the axis of rotation, and comprising a crown having:

• a crown reinforcement;
• and
• a tread radially on the outside of the crown reinforcement, the tread comprising:
• a plurality of tread pattern elements having lateral faces and a contact face intended to come into contact with a road surface while the tire is being driven on;
• a plurality of circumferential grooves, each of which is delimited by outer lateral faces and inner lateral faces of adjacent tread pattern elements that face one another, and is delimited by a bottom;
• a circumferential reinforcement made up of a rubber mixture with a stiffness greater than a stiffness of the rubber mixture of the tread pattern elements;
• and
• an underlayer disposed radially on the inside of the circumferential reinforcement and radially on the outside of the crown reinforcement,
• wherein the tire has an outer side and an inner side,
• wherein the circumferential reinforcement has a reinforcing element positioned in the tread pattern elements disposed axially on the outside with respect to one of a first circumferential groove and a second circumferential groove of the tread from the outside to the inside,
• wherein the reinforcing element extends radially from the radially outer surface of the underlayer towards the outside of the tread with an axial width which decreases gradually and over a partial or total height of a thickness of the tread,
• wherein the tread pattern elements disposed axially on the inside with respect to the first circumferential groove do not have reinforcing elements disposed close to the axially inner faces of the groove,
• wherein a stiffness of the underlayer is less than or equal to the stiffness of the rubber mixture of the circumferential reinforcement, and
• wherein a dynamic shear modulus G*, measured at 60° C. at 10 Hz and under an alternating shear stress of 0.7 MPa, for the circumferential reinforcement is greater than 20 MPa and a dynamic shear modulus G*, measured at 60° C. at 10 Hz and under an alternating shear stress of 0.7 MPa, for the tread is less than or equal to 1.3 MPa.