What to use for truck running board paint?

[Barry-ct]

All your suspension parts from the new car makers are powder coated and once it cracks or gets a tiny chip in it, it will trap water under it and things tend to rot very quickly. By the time you find this has happened, it's pretty nasty under the coat. If you're never going to drive your truck in the rain, it might work. I don't think I will use it. There is no metal primer under it on production parts. I have had several John Deere riding tractors where the coating could be peeled off in sheets. Must be a lot cheaper to powder coat for them, than use paint!