I just painted all 4 of my wheels. Man what a pain in the @$$ - at least if you want it done right.
So I did it something like this, two wheels at a time.
If possible unmount your spare and use it to replace one of the wheels so you can do two at a time.
a) remove 1st tire, put on spare
b) remove 2nd tire, leave truck on jack stand or if none, jack
c) wash wheel using bucket and soap
/*if wheel is already painted, such as aftermarket*/
d) use 3M brillo pad to scuff up the paint then rinse
[use the redish/purple one that is slightly grittier than your standard green kitchen one]
e) use painters tape ~1/8 or 3/16" tape to tape off as necessary. This took me an average 1 hour per wheel
f) 1st coat
g) 90 mins go by
h) 2nd coat
i) put on truck
J) repeat for other tire or do both tires simultaneously then repeat for other two
BTW: I used semi-gloss black because in my experience flat black becomes dark gray w/ 18 months and semi-gloss holds up better, eventually turning into flat black.
:guitar2: