Noise improving tread

A tread for a tire having:

• a contact face of a width TW intended to come into contact with ground during rolling, the tread being provided with at least one circumferential groove of a depth D extending in a circumferential orientation and a plurality of transverse grooves extending generally in an axial orientation, both the at least one circumferential groove and the plurality of transverse grooves opening to the contact face, the at least one circumferential groove and the plurality of transverse grooves delimiting a plurality of contact elements,
• the tread comprising a center region and a pair of shoulder regions being positioned on two axial sides of the center region, each of the center region and the shoulder regions having a plurality of contact elements,
• the plurality of contact elements including a plurality of compressive contact elements that have compressive elements, the compressive elements only being present in the shoulder regions of the tread,
• wherein for each of the compressive contact elements, a volumetric void ratio in a unit region surrounded by a center of the at least one circumferential groove and a center of the plurality of transverse grooves delimiting the respective compressive contact element is at least equal to 30%, and an aspect ratio defined as a ratio of a surface of the respective compressive contact element supposed to contact with ground divided by a sum of a surface area of the respective compressive contact element touching with air other than the surface of the respective compressive contact element supposed to contact with ground being at most equal to 70%,
• wherein at least one of the compressive elements among the plurality of compressive elements comprises an enlarged portion at radially innermost portion of the compressive element, and
• wherein each of the compressive elements extends only in a circumferential direction and extends from one circumferential side of a respective one of the compressive contact elements to an opposite circumferential side.