Wheel shimmy

[bigbignacha]

2002 Silverado Reg Cab

BF Goodrich All Terrain 305/70/16

Rancho 4" Lift Kit with rs5000 shocks

The problem happens at like 55 mph. The steering wheel starts to violently shake. If I am merging onto the interstate and I blow though 55 its no problem but daily driving is a pain in the ass. Above or below 55 is no problem. I have heard from friends that aftermarket wheels have the weights glued on and they fall off easily and that this is a common occurence. Any thoughts?

[95Sierra2500]

The first thing I'd do is have the tires balanced again to see if the balance is off at all. If that's okay then I'd suggest having your alignment checked and checking for bad bearings/tie rods/ball joints.