[xelhan]

Originally Posted by Bill Cilker

Here is a picture of one of the inner lug nuts with 1" spacer built in.

If inner and outer rims doesn't make contact there will be a lot of bending forces added to the wheel studs on top of the tensile force which normally is the only force on a bolt under tension. I think 3/8" spacers with full contact is as far as you can go. Otherwise you need an adapter of this type: