Hope this is not true. Moog Offset Upper control arm bushings.

92b said

I guess that I would say is as long as you don't induce an pull to one side or the other with caster it is not a tire wearing angle.

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It's a non wearing angle even with a pull. The only reason caster induces a pull is because one side would have less caster making it pull to that side. As long as camber and toe were in spec, there would be no tire wear, regardless of caster difference.