Tyre for vehicle wheels

A tyre for vehicle wheels comprising:

• a carcass structure having opposing side edges associated with respective annular anchoring structures;
• a belt structure located in a position radially external to the carcass structure;
• a tread band located in a position radially external to the belt structure;
• a pair of sidewall structures, wherein each sidewall structure comprises a sidewall extended in a position axially external to the carcass structure and extended radially between one of the annular anchoring structures and an axially external portion of the tread band;
• and
• at least one underlayer, wherein the underlayer is in a radially internal position with respect to the tread band and radially external with respect to the belt structure, and wherein the at least one underlayer is positioned in contact with the tread band along its entire axial length,
• wherein the at least one underlayer comprises a vulcanised elastomeric compound having a shear modulus value G′, measured with a Rubber Process Analyzer (RPA) at 70° C., 10 Hz, 9% strain, of less than 0.90 MPa, a dynamic elastic compression modulus value E′ ranging from 3.00 MPa to 8.00 MPa, and a dynamic viscous compression modulus value E″ of less than 0.24 MPa,
• wherein the moduli E′ and E″ are measured at 23° C. with an Instron model 1341 dynamic device in a tension-compression mode on cylindrical samples of 25 mm in length and 14 mm in diameter, cross-linked at 170° C. for 10 minutes, longitudinally pre-compressed by 25% and subjected to a dynamic sinusoidal stress of ±3.5% of amplitude and 10 Hz of frequency.