This standard specifies the detection parameters, measuring tools and detection methods of the rim contours of automobiles, tractors, agricultural and forestry machinery, construction machinery and industrial vehicles. This standard is suitable for testing deep groove rims (DC), deep groove wide rims (WDC), semi-deep groove rims (SDC), flat bottom rims (FB), flat bottom wide rims (WFB), fully inclined bottom rims (TB) and Open rims (DT).