轮胎规格层级负荷指数速度级别标准轮辋外直径花纹深度7.50R1614122/118K6.00G80531.712.5168.25R1614136/122K6.5H85543.112.5168.25R2016136/131K6.598638.813.5178.25R1616128/124K6.50H85533.712.5169.00R2016144/142K7.0101940.11519.510.00R2018149/146K7.5105441.5162111.00R2018152/149K8.0108542.716.52112.00R2018154/151k8.5112544.31722