| 摘要 |
The present invention relates to a radial tyre (1) for a motor vehicle, comprising: - a crown (2) comprising a tread (3) provided with at least one radially external part (3a) intended to come into contact with the road; - two inextensible beads (4), two sidewalls (5) connecting the beads (4) to the tread (3), a carcass reinforcement (6) passing through the two sidewalls (5) and anchored in the beads (4); - a crown reinforcement or belt (7) arranged circumferentially between the radially external part (3a) of the tread (3) and the carcass reinforcement (6); - a radially internal elastomer layer (8) referred to as the "sub-layer", of different formulation from the formulation of the radially external part (3a) of the tread, this sub-layer being itself arranged circumferentially between the radially external part (3a) of the tread (3) and the carcass reinforcement (6), characterized in that said sub-layer comprises at least one aromatic polyester copolymer (APC) thermoplastic elastomer at a content comprised within a range varying from 65 to 100 phr (parts by weight per hundred parts of rubber). |
