Provided is heavy load pneumatic radial tire capable of providing excellent durability by effectively preventing progression of fracture to low heat generation-type base rubber that contributes to improve high-speed durability. Heavy load pneumatic radial tire according to the present invention includes: tread rubber 6 having laminated structure of cap rubber 5 and base rubber 4; and four or more belt layers 3a-3e disposed radially inward of tread rubber 6. A radially outer side of a width direction side edge of at least one of radially outermost belt layer 3e and widest-width belt layer 3c is covered by reinforcing rubber layer 7 that terminates on a radially inner side of tread rubber 6 without reaching tire equatorial plane E. Relative relation between reinforcing rubber constituting reinforcing rubber layer 7 and base rubber 4 in terms of modulus of rebound elasticity satisfies the condition: reinforcing rubber < base rubber 4.
HEAVY LOAD PNEUMATIC RADIAL TIRE
SCHWERLAST-RADIALLUFTREIFEN
PNEU RADIAL POUR LOURDES CHARGES
2017-04-12
Patent
Elektronische Ressource
Englisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |