本文所描述的是一种B/A比值为60%~70%的子午线航空轮胎。轮胎胎圈部可以进一步优化,使Ra/Fr1的比例为约1~2.1。轮胎也可以进一步优化,将SW/TS比设计为约0.1~0.5。上述的SW是位于区域A的胎圈包布的厚度,TS是位于区域A的胎侧胶的总厚度;其中A被定义为具有较低径向端点的胎侧部;该端点被定义为在充气和无负载条件下轮辋轮缘与轮胎之间的接触点。上部的径向端点AH被定义为在轮胎充气、负载200%额定负荷下的轮胎与轮辋轮缘的接触点。 Described in this paper is a radial air tire with a B / A ratio of 60% to 70%. The bead portion of the tire can be further optimized so that the Ra / Fr1 ratio is about 1 to 2.1. Tires can be further optimized with a SW / TS ratio of about 0.1 to 0.5. The above SW is the thickness of the chafer in region A, TS is the total thickness of the side-gluing located in region A; where A is defined as the side portion with the lower radial end point; The point of contact between the rim rim and the tire under inflated and no-load conditions. The upper radial end point AH is defined as the point of contact of the tire with the rim rim at tire inflation, load 200% of rated load.