Tire for passenger vehicle

A tire (1) for a passenger vehicle comprising:

• two beads (50) intended to be mounted on a rim, two sidewall layers (30) connected to the beads (50), and a crown (20) having a tread (10) intended to come into contact with a ground (200), the crown (20) having a first side connected to a radially outer end of one of the two sidewall layers (30) and a second side connected to a radially outer end of another one of the two sidewall layers (30);
• at least one carcass reinforcement (90) extending from the two beads (50) through the sidewall layers (30) as far as the crown (20), the carcass reinforcement (90) having a plurality of carcass reinforcing elements and being anchored in the two beads (50) by way of a turn-up around an annular reinforcing structure (51), so as to form a main part (52) and a turn-up (53) in each bead;
• a first layer (70) of elastomeric filler compound taking up a volume which is comprised at least partially between the main part of the carcass reinforcement (52) and a radially outer portion of the annular reinforcing structure (51), and extending radially outwards to an end located at a normal distance DRB from an axial straight line (HH′) which is tangent to the annular reinforcing structure at a radially innermost point;
• a second layer (60) of elastomeric compound forming a lateral reinforcing layer (60) taking up a volume comprised at least partially between the sidewall layer (30) and the turn-up (53) of the carcass reinforcement, and extending radially outwards to an end located at a normal 20 distance DRL from the axial straight line HH′ which is tangent to the annular reinforcing structure (51) at the radially innermost point,
• wherein a dynamic shear stiffness moduli and a viscoelastic loss of the elastomeric compounds are measured in accordance with standard ASTM D 5992-96, at 100° C., under 10% strain,
• wherein, in each bead (50), a rim contact curve comprises points on the tire (1) that are in contact with the rim (100), the rim contact curve connecting a first point M1 on the tire that is positioned axially furthest on an outside, and in contact with the rim, and a second point M2 on the tire that is also in contact with the rim and is located in a middle of a rectilinear portion connecting a flange to a seat of the rim, and a length of the rim contact curve being a curvilinear distance from the point M1 to the point M2 along the contact curve,
• wherein there are two sections in a vertical meridian plane of the tire in an inflated state mounted on a rim and compressed against a hard flat ground, by a vertical load (250), where a load and an inflation pressure are at nominal values from an ETRTO standard, a first section being located in the contact patch, and a second section being located on an opposite side to the first section in relation to an axis of rotation of the tire,
• wherein, in the first section located in the contact patch, in at least a first bead, a length of the rim contact curve, LADC, is measured,
• wherein, in the second section located opposite the contact patch in relation to the axis of rotation of the tire, in at least a second bead, a length of the rim contact curve, LCJ, is measured,
• wherein a ratio of the difference in the lengths of the rim contact curves of the two sections, 100*(LADC−LCJ)/LCJ, is greater than or equal to 30, and
• wherein the viscoelastic loss Tan(δ)max of the elastomeric compound making up the second lateral reinforcing layer (60) of at least one bead (50) has a value less than or equal to 0.100.