Have you run into any trouble using wheel spacers?
On a live axle (Commander's Rear Suspension) changing backspacing on a wheel doesn't have much effect.
On independent suspension, changing backspacing on a wheel will change the suspension geometry, and "can" have a huge effect on alignment, handling, how the suspension reacts, and tire/suspension wear. Have you noticed any of that with the wheel spacers? Cause you will get the same thing with wheels with the same backspacing.
I don't know how much it effects the commander, I just know it "can" effect suspension geometry to the point it has very ill effects. Seen lots of complaints from other vehicles that have done and suffered ill effects, to bad handling, ride or constantly replace ball joints/other suspension parts or horribly uneven tire wear. I've also seen other vehicles where owners do it all the time and don't have problems or barely any problems.
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