The car body displayed by the left and right rearview mirrors should be parallel to the garage sideline or parking space line, but the picture presented by the rearview mirror is wide in front and narrow in back, which can be judged as positive.
Body structure
A car with a load-bearing body does not have a rigid frame, but only strengthens the front, side wall, rear end and floor. The body and underframe together form a rigid spatial structure of the body. In addition to the inherent load-bearing function, this kind of load-bearing body also directly bears various loads.
This kind of car body has the advantages of large bending and torsion stiffness, small mass, low height, low center of mass, simple assembly and good high-speed driving stability. However, because the road load will be directly transmitted to the car body through the suspension device, the noise and vibration are large.
Semi-loaded body also has a body structure between non-loaded body and loaded body, which is called semi-loaded body. Its body and underframe are rigidly connected by welding or bolts, which strengthens a part of underframe and plays a part of frame.
For example, the engine and suspension are installed on the reinforced chassis of the car body, and the car body and chassis are integrally loaded. This form is essentially a load-bearing body structure without a frame. So people usually only divide the automobile body structure into non-load-bearing body and load-bearing body.