A friend asked me about making spacers to make the front wheels on his
4wd pickup truck sit farther out. He is running non-standard, steel
wheels on the truck. The wheels are 8 lug, on a 6 1/4" bolt circle. The
lug nuts look like the standard lug nuts with the conical face toward
the wheel. Before diving into a project like this, a few questions came up:

How do steel wheels locate to the hub? Do they locate on the lug
bolt/nuts? Do they locate on the hub in the center of the bolt circle?

Would 6061 T6 be suitable for making a wheel spacer? The spacer will be
about 0.6 thick, and the lugs are long enough to pull up with plenty of
space.

Thanks in advance,
BobH