Re: Vibration/Shimmy at 70 mph... 4x2 or 4x4?
No shakes on my (20's) on the original balance, when rotated at around 10k, picked up some shake from the previously rear tires, but a fresh balance cured it. The aftermarket 18" wheel/tire combo I use is a bit tougher to get smooth, but to be expected with the major offset change and weight increase.
2014 Ram 2500 4x4 Laramie - more torque to pull the toys
2013 Limited Hemi 4x4 white - Vision wheels with 285/60/18 Terra Grapplers - traded
2011 Overland Hemi 4x4 black/black - retired with QL problems at 46000 miles