Tire positioning mechanism for motor vehicle maintenance

The tire positioning mechanism comprises a supporting base, the supporting base is in a U shape, an electric telescopic rod is installed on the left side of the supporting base, a limiting installation disc is rotationally arranged at the telescopic end of the electric telescopic rod, a limiting rod is fixed to the right side of the limiting installation disc, and a limiting groove is formed in the right end of the limiting rod. According to the tire positioning mechanism for motor vehicle maintenance, a hub hole of a tire can be arranged on the surface of a limiting rod in a sleeving mode, then an electric telescopic rod is used for driving an abutting rod to abut against the surface of the hub, and therefore the other side of the hub abuts against the end of an adjusting ejector rod on the right side, and limiting of the tire is achieved; by arranging an electric push rod, a linkage rod, a driving plate and a limiting insertion block, the limiting insertion block is inserted into a strip-shaped insertion ho