Please help with my 2010 Ram 2500 4x4 steering.

From 4 wheeler...…….
Cupping: Aggressive off-pavement treads have more of a chance to "cup"-that is, to make uneven high and low spots across the face of the tread-than, say, a performance street tread. Tread design plays a major role here, and the more aggressive the tire is, the more cupping may take place. The fault is usually the lack of sufficient tire control by the shock absorbers. The more aggressive the tread is, the more it wants to skip and hop across the road surface. Tire balance, and again worn suspension components-including loose wheel bearings-will contribute to this.