Tire for vehicle, comprising a tread comprising a plurality of compounds and a radial carcass reinforcement formed of at least two layers

A tire for a motorized two-wheeled vehicle, comprising a radial carcass reinforcement formed of at least two layers of reinforcing elements, at least one of which is anchored by being turned up around a bead core on each side of the tire inside a bead, and, each bead being continued radially outward by a sidewall, the sidewalls being joined radially outward to a tread, and comprising underneath the tread, a crown reinforcement structure comprising at least one layer of reinforcing elements,

• wherein at least a surface of the tread comprises a first polymeric compound extending in at least a region of an equatorial plane and at least one second polymeric compound having physicochemical properties different from those of said first polymeric compound,
• wherein a density of the reinforcing elements in a radially inner layer of the at least two carcass reinforcement layers is less than that in a radially outer layer of the at least two carcass reinforcement layers,
• wherein R1 represents an inside radius of a bead core and R2 represents a radius of the radially outer carcass reinforcement layer in the equatorial plane,
• wherein the density of the reinforcing elements in the radially inner carcass reinforcement layer is between 70×R1/R2 and 110×R1/R2 reinforcing elements per decimeter, and the density of the reinforcing elements in the radially outer carcass reinforcement layer is between 100×R1/R2 and 130×R1/R2 reinforcing elements per decimeter, and
• wherein a ratio R1/R2 is greater or equal to 0.7.