What are the reasons for uneven left and right suspension height?
2 Answers
The reasons for uneven left and right suspension height include detachment of the shock absorber connecting pin (rod), wear or rupture of rubber bushings (cushions), insufficient shock absorber oil, or presence of air. Below is relevant information about air suspension: 1. Introduction: Air suspension generally refers to the air suspension system. Typically, vehicles equipped with air-adjustable suspension have ground clearance sensors near the front and rear wheels. Based on the output signals from these sensors, the vehicle's computer determines changes in body height and then controls the air compressor and exhaust valves to automatically compress or extend the springs, thereby lowering or raising the chassis ground clearance to enhance high-speed stability or off-road capability. 2. Variable stiffness of air suspension: Variable stiffness refers to the characteristic of air springs, compared to leaf springs or coil springs, where stiffness changes with load, controlled by height valves. A direct experience is that when riding in a large truck with leaf springs when empty, it feels like the truck is bouncing on the road at a high frequency. In contrast, with air springs, whether empty or fully loaded, the ride feels very similar.
I often notice uneven suspension height between the left and right sides when driving my own car, which is quite common. We should consider daily driving reasons. For instance, aging suspension system components like springs or shock absorbers can cause uneven wear over time, leading to body tilt. Tire pressure differences also play a role – lower pressure in the left tire or higher pressure in the right can make the car appear uneven, especially when loaded on one side. Damage to the chassis from accidents, such as hitting a curb causing suspension deformation, may also create this issue. Don't overlook parking conditions either; prolonged parking on slopes can temporarily lower suspension due to uneven force distribution. The checking method is simple: park on level ground and measure the height difference from the roof to the wheels. Timely attention can prevent accelerated tire wear. I measure tire pressure and height quarterly to prevent minor issues from becoming major problems.
