Hochgeschwindigkeitsreifen für Schwerlastfahrzeuge.

摘要

A high speed tyre for heavy duty vehicles comprises a radial carcass (7) having a main body part (7a) extending from a tread (5) through sidewalls (4) to a bead core (2) in each of two beads (3) and folded-back parts (71) each being folded back around the bead core (2) at each edge of the main body (70), a belt layer (10) disposed radially outside the carcass (7), tapered rubber bead apeces (9) each extending outwardly in the radial direction between the main body (70) and the folded-back part (71) from the bead core (2), rubber side packings (15) of small thickness each disposed along the outside surface, in the tyre axial direction, of the carcass (7), and rubber sidewalls (17) each covering the rubber side packing (15) and extending from the bead (3) to the sidewall (4) so as to form the outside surface of the tyre characterised in that the 100% modulus MP of the rubber side packing (15) is 53 to 95 kg/cm<2>, the 100% modulus MA of the bead apex (9) is 78 to 120 kg/cm<2>, the 100% modulus MS of the sidewall (17) is 14 to 50 kg/cm<2>, and these 100% modulus values MP, MA, MS are in the relation of MS < MP < MA.