thanks for the replies...........
I have good mud flaps installed.
I don't think it could be fall out from the atmosphere as it's not on the top portion.
my truck is never parked outside and I live outside of town.
These are random spots (looks like rust spots) about the size of a pinhead or smaller.
'09 Dodge Ram CC Laramie 5.7L, Stone White; fully loaded
Mods: Chrome Gas Door, Chrome Bedrails, Chrome Bug Shield, Chrome Oval Steps, Access Cover, Rhino Liner, Tinting, Stainless Door Sill Guards, Flowmaster 50 H.D., Recon LED Lightbar, K&N Filter, Power Tailgate Lock, EZ Down