Tire having a groove wall lining for reducing formation of anomalies causing subjective user dissatisfaction

A tread layer for a tire, said tire having a pair of beads;

• a reinforced carcass ply having ends anchored to a respective one of said beads;
• and at least one belt ply extending circumferentially around said tire and disposed radially outward of said carcass ply, said tread layer including a first tread compound with a first modulus of elasticity and comprising:
• a plurality of circumferential grooves and shoulder grooves formed in said tread layer, each said circumferential groove and shoulder groove having walls separated by a base;
• at least one tread rib disposed between adjacent circumferential grooves;
• at least one shoulder rib disposed between each shoulder groove and an adjacent circumferential groove;
• groove linings defining said walls and said base of each of said circumferential grooves and said shoulder grooves, and forming at least one composite tread rib and at least one composite shoulder rib, said groove linings being formed from a second tread compound having a second modulus of elasticity;
• wherein, a ratio of said second modulus of elasticity to the first modulus of elasticity is between about 0.4 to 0.8, and,
• said groove linings at said circumferential groove walls and said shoulder groove walls have a substantially lateral width w of between 6 and 9 mm, and said groove linings at each circumferential groove base and each shoulder groove base have a radial thickness t of approximately 2 to 3.5 mm.