Asymmetric tire

Resilient tires and wheels – Tires – resilient – Anti-skid devices

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152209R, B60C 1101, B60C11100

Patent

active

054152151

ABSTRACT:
A radial ply pneumatic tire (30) has as asymmetric tread portion (41) having circumferential grooves (50, 51, 52, 53) and diagonal grooves (55, 56) therein. The tread is divided into three axial regions (A, B, C) of equal width, and in each region the net-to-gross ratio is different. The rate of treadwear in the axially outermost regions (A, B) of the tread are substantially equalized by features including varying groove depths and widths, groove paths, and chamfering the edges of block elements (57, 58, 62, 63) of the tread.

REFERENCES:
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Advertisement from Tire Review, Sep. 1989 for Pirelli p. 500.
Abstract 63-90404, Bridgestone, vol. 12 No. 321 (M736) (3168) Aug. 31, 1988.

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