I have seen various post about using wheels for other series on the E38. It seems to be just the issue of offset since they have the same lug circle. The offset, which I think for the e38 is 20mm and the 3's is 47 mm. So is this a spacer problem or a machining problem? I can see 27mm of spacer and longer lug nuts, but not cutting 27 mm into a hub. Anyone done a transplant using 3 series wheels on the e38? Don't laught they have a few nice ones in that class, not many I would say however.?