I already had a supplier for a 12" wheel in 5 on 4.5 pattern as well as the typical ATV/UTV patterns like 4 on 110. I just found out my local distributor stock another wheel. Being local, I can mix with other tires. The other distributor only had mud type tires.
I prefer a flat profile knobby like these:
I am using 5 on 4.5 pattern on my car because I use an off the shelf bearing/hub that accepts the EMPI Micro Stubs or the F150 CV.