The static load performance and mechanical characteristics of 255/45ZRF18 run-flat tire and 255/45ZR18 ordinary tire with the same pattern were analyzed under different loads and inflation pressures.The results showed that,compared with ordinary tires,when the inflation pressure was 290 kPa and the load was 700,875 and 1 050 kg,the radial stiffness of the run-flat tire was greater,and the shoulder force was more concentrated.When the inflation pressure was 170 kPa and the load was 875 kg,the pressure distribution of the run-flat tire was more balanced,and the rectangular ratio of the footprint shape remained stable.
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