本实用新型提供了一种轮胎径向跳动测试工装,包括:支撑框架,其包括底板和设于底板上方的顶板;轮胎支撑轴,其设于底板上;用于带动轮胎支撑轴进行转动的第一滚动轴承,其设于底板处并套设于轮胎支撑轴的外部;可上下运动的伸缩杆,其设于顶板处并悬空设于轮胎支撑轴的上方;转接轴头,其设于伸缩杆的底端;第二滚动轴承,其设于转接轴 The utility model provides a test tool for radial runout of a tire, which comprises a supporting frame which comprises a bottom plate and a top plate which is arranged above the bottom plate, a tire supporting shaft which is arranged on the bottom plate and is used for driving the tire support shaft to rotate A rolling bearing which is arranged on the bottom plate and sleeved on the outside of the tire supporting shaft; a telescopic rod which can move up and down, which is arranged on the top plate and is suspended above the supporting shaft of the tire; a connecting shaft head which is arranged on the telescopic rod The bottom of the second rolling bearing, which is provided on the adapter shaft