By removing even .0625 inches of deflection times two axle ends omits 1/6" of an inch, or more, of ball joint deflection. You can feel it in the steering wheel. 35 and 37 inch tires, more stress and off-road impacts only exaggerate the movement, and subsequently, its affect. Your truck feels tighter and the steering wheel goes numb, even over pot holes and rail road tracks. The secondary tire movement, once eliminated, gives you a more controlled feel. Sometimes when you hit a sharp lip on the street, it feels like you hit two bumps, that aftershock is the tire's secondary movement from O.E.M. lower ball joint deflection. The front end of your truck will feel improved, or we'll buy the product back from you - guaranteed.