8-Lug Wheel Question

[Stocker]

1) Does this type of wheel use the same lug nut as the tapered nuts for OEM steel wheels? I'm thinking about picking one up to replace my split-rim spare.

2) Also, as my studs extend only ~3/16" past the nut with steel wheels, will the aluminum wheel work without longer studs?

3) Lastly, will it be too wide to fit in my OEM under-bed spare carrier with a 235/85-16 mounted? Currently have a 7.50-16 on the split rim -- it's about 8" total width and there's not much apparent capability for anything wider.

Thanks, guys