| 摘要 |
PURPOSE:To obtain the title tire improved in abrasion resistance on a good road and improved also in partial abrasion resistance, by mixing a stock rubber with a specified carbon black, a specified bismaleimide compound and sulfur each in a specified range of amount and specifying the resiliency in a specified range. CONSTITUTION:The title tire wherein tread rubber comprises a rubber composition prepared by mixing 100pts.wt. stock rubber comprising 50-100pts.wt. natural rubber or natural rubber/isobutyrene mixture and 50-0pt.wt. styrene/ butadiene rubber and/or butadiene rubber with 0.5-3pts.wt. bismaleimide compound (A) of the formula (wherein R is a 2-6C alkylene, phenylene, naphthylene or tolylene), 0.5-2pts.wt. sulfur (B) and 40-60pts.wt. carbon black (C) of a nitrogen adsorption specific surface area (N2SA) of 110-150m<2>/g and a compressed dibutyl phthalate absorption (DBP value) of 100-130ml/100g, and the resiliency of a sample of the tread rubber sampled from a vulcanized tire is 48-57%. This tire is improved in abrasion resistance in running on a good road and partial abrasion resistance.
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