Belt reinforcing assembly for a pneumatic tyre

摘要

A radial ply tire (10) has a belt assembly (21) of at least one, and preferably two, belt plies (22, 23). At least one of the belt plies has a gum strip (24,25) laying flat against a belt edge or folded over the edge of a belt ply such that there is at least one reinforced gum strip on each lateral side of the belt assembly. The reinforced gum strip comprises parallel reinforced cords (32) encapsulated in gum treatment (34) of 0.015 to 0.055 inch (0,38 to 1,4 mm) total gauge, wherein the reinforcing cords make an angle of 5 DEG to 90 DEG with respect to the equatorial plane (EP) of the tire.