A self-supporting tyre for automotive wheels

A self-supporting tyre for automotive wheels comprising:

• a carcass structure comprising at least one carcass layer having opposite lateral edges associated with respective annular anchoring structures;
• a belt structure applied in a position radially external to the carcass structure;
• a tread band applied in a position radially external to the belt structure;
• a pair of sidewall structures each including 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;
• a single first and a single second sidewall reinforcing insert, wherein the first and second inserts are each incorporated into the respective sidewall structure of the tyre, at a position axially internal to the respective sidewall, and wherein the first sidewall reinforcing insert consists of an elastomeric compound (A) having a shear modulus value G′ of at least 1.25 MPa, and
• the second sidewall reinforcing insert consists of an elastomeric compound (B) having a shear modulus value G′ of less than 1.00 MPa, wherein the moduli G′ is measured at 70° C., 10 Hz, 9% strain.