Why is the car's steering wheel heavy?

[LeOscar]

The reasons for a heavy car steering wheel are: 1. The steering knuckle kingpin, tie rod, drag link, and other ball joint areas and bearings are adjusted too tightly with poor lubrication; 2. The oil passage of the steering knuckle kingpin bushing is blocked or the steering knuckle thrust bearing lacks oil; 3. The steering knuckle kingpin is worn into grooves or fits too tightly with the bushing; 4. Improper matching of front wheel toe-in and camber, excessive kingpin caster or camber; 5. The front leaf spring's arch dimension does not meet requirements, the leaf spring center bolt is broken, or the leaf spring is installed incorrectly, causing the steering to become heavy when the load makes the kingpin caster and camber angles too large; 6. Insufficient tire pressure or front wheel bearings are assembled too tightly, resulting in a significant difference in rolling radii; 7. The front axle or drive axle is overloaded.