AUXILIARY POSITIONING BRACKET AND VEHICLE CALIBRATION SYSTEM

An auxiliary positioning bracket, including: a positioning bracket, and a laser device arranged on the positioning bracket. The positioning bracket has a first end portion and a second end portion arranged oppositely to the first end portion. The first end portion is formed with a first abutment surface, which is configured to abut against a tire outer lateral surface, and a second abutment surface, which is perpendicular to the first abutment surface and configured to abut against a horizontal plane of a calibration site. The positioning bracket is also formed with a measurement surface which is parallel to the second abutment surface. The laser device is arranged at the second end portion and configured to project a line laser onto the tire outer lateral surface, and a plane where the line laser is located is perpendicular to the measurement surface.