| 摘要 |
In a tire for a heavy load in which a belt is formed by laminating rubber-coated cord layers prepared by embedding steel cords in a coating rubber, an end part of at least one rubber-coated cord layer or an end part of the belt is coated with a rubber composition containing trans-polybutadiene (TRBR) and bismaleimide (BMI) in the following compounding amounts based on 100 parts by mass of a rubber component containing natural rubber and isoprene rubber: 0.1 p �¢ a �¢ r �¢ t b �¢ y m �¢ a �¢ s �¢ s ‰¦ T �¢ R �¢ B �¢ R + B �¢ M �¢ I ‰¦ 10.0 p �¢ a �¢ r �¢ t �¢ s b �¢ y m �¢ a �¢ s �¢ s T �¢ R �¢ B �¢ R / T �¢ R �¢ B �¢ R + B �¢ M �¢ I ‰§ 25 %
whereby cracks originating from separation between the steel cords at an end part of the belt and the coating rubber are prevented from being generated. |
