Steering wheel shimmy - the usual culprit is a wheel out of balance. I have aftermarket rims (American Racing - they came with the truck). I have had them balanced multiple times and each time the tech tells me they were out of balance. I had two different businesses (Sam's Club and Sears Auto Center) tell me that aftermarket rims can be very difficult to successfully balance. Has anyone heard this before? The rims are in good condition (no flat spots, etc). Is my only recourse, in order to get rid of steering wheels shimmy (it only happens between 45 and 55 mph), to get OEM wheels?

To note, I've just replaced the steering stabilizer (MOOG Super Trail Boss) and that helped a little. Also replaced my OEM shocks with a set of heavy duty Bilsteins (I love them, wow). All other steering and suspension components are okay.

So, do American Racing wheels not balance well and I need OEM replacements or am I being fed a line?