Safe to use Wheel Adapters 5 on 4" to 4.5"?

dual rear rims are just using a spacer on the original lug studs . not reclocking the lug pattern to another set of studs . there an accident waiting to happen . i made some out of steel to adapt my first 4.0 bc . they would flex a bit in hard driving . View attachment 1715505018 View attachment 1715505019 View attachment 1715505020 View attachment 1715505021

What's that you were saying? Not a different pattern? Not a separate set of studs?

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It doesn't matter. As long as there's enough metal around the studs, it's perfectly safe. Yes, adding an additional set of lug nuts does complicate things, you do need to make sure ALL of the lug nuts are properly torqued and checked periodically. But if you do that, they're perfectly safe. If you look at the wheels you're bolting on, and consider the thickness that they have and their construction, the wheel is usually the weakest link.