I have the OEM SS step bars on my 2013. Every time I washed the truck the step bars water spotted very bad. I even waxed them a couple of times and they still water spotted.
Took them off today and started to put Plastic Dip on them. I have to spray outside and it started to drizzle some rain and had to stop.
I liked the look of the stainless steel but the water spots were terrible.
I will have to inspect the mounting brackets for paint chips. Thanks for the heads up.