I've sprayed mine on the navara and my other cars.
It's not that hard and they do last.
- 600 grit sandpaper to scuff up all the clear, make sure you get into all the spots as good as you can
- I spray 2 coats of Etch Primer.
- I spray 3 to 4 coats of Flat Black or Gloss Black paint depending on the look you want.
- You can finish with a clear coat if you want, I never do, but it adds extra protection.
Buy some speech cards from officeworks and jam them between the tyre and the rim to create a guard from overspraying the tyres.
Do this process after you've scrubbed the wheels during a car wash to get rid of as much tyre shine and dirt from the wheels as possible.
Best part is, if it does chip - get the same spray can and touch it up.
Side note - I prefer using spray paints like 'roll bar and chassis spray' or like above the 'White Knight Engine enamel'.. they are harder wearing paints.
Avoid Rustoleum 2X like the plague, it is junk that doesn't stick, it stinks and takes days and days to dry.
Here's some of my work