FIELD: automotive industry; tire industry; road vehicles.
SUBSTANCE: proposed pneumatic tire tread cap is provided with great number of cuts, mainly, cross-orientated. According to invention, some of cross cuts at no wear form on tread running surface zones in form of cavities with mean width exceeding or equal to 2 mm, and maximum depth Pt not exceeding 80% of thickness of tread cap subject to wear. Other cross cuts form on the same tread running surface notches of width less than 2 mm and depth not exceeding Pt. great number of notches continue in zones in form of cavities so that after uniform wear of tread cap, volume of zones in form of cavities, opening on new tread running surface is of value within 50% and 150% of volume formed by zones at no wear. Forming member contains thick and thin parts.
EFFECT: improved wheel tread-to-road adhesion during entire service life of pneumatic tire.
6 cl, 8 dwg
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