Heavy duty tire with reduced shoulder wear and improved...

Details Heavy duty tire with reduced shoulder wear and improved... Heavy duty tire with reduced shoulder wear and improved...

B - Operations, Transporting

60

C

B60C 5/00 (2006.01) B60C 11/00 (2006.01) B60C 11/01 (2006.01)

Patent

CA 2043893

A pneumatic tire is provided herein for heavy duty use. Such pneumatic tire has a profile comprising a tread profile extending between tread edges. A buttress profile extends radially-inwardly from a point on the surface of each tire sidewall. A connecting profile extends between each tread edge and the point. In a cross section including the tire axis, the tread profile is formed by an arc having an outwardly-swelling curvature of a radius, each buttress profile is formed by an arc having an inwardly- swelling curvature of a radius and each connecting profile is formed by an arc having an outwardly-swelling curvature, and intersecting the tread profile at the tread edge to form an angled corner, and which is smoothly-connected with the buttress profile at the point. The ratio of the radial distance between the tread edge and the equatorial point on the tread profile to the axial distance therebetween is 0.09 to 0.12. The ratio of the axial distance to the axial distance between the equatorial point and an imaginary point at which the tread which has the radius of curvature and the buttress arc which has the radius of curvature intersect each other if extended, is 0.85 to 0.95. The inclination angle of the tangential Line to the connecting profile drawn at each tread edge is 20 to 60 degrees with respect to the radial direction of the tire. This pneumatic tire has improved shoulder wear resistance and wandering performance.

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