Any metal will rust if not prepped correctly. Sounds like some one did a $hitty job on your panjust for the record i just had an fbi rollpan painted and put on the pan itself needed a lot of work to be ready for paint in order to avoid rust there was a lot of raw ended steel there is no cutout for the spare tire drop rod and the body/paint guy said it was a pain in the ass to get it "straight" not really sure what he ment also the lower edge of the pan doesnt line up with the lower bedsides bacuase if they lined it up the tailgate would hit when it opens! just my 2 cents i would stay away from fbi even for the price. prior experience with sir mikes was that it rusted out within a year on my old ranger! i can probably chock this up to poor paint prep but even still left a bad taste in my mouth. i will post pics of my truck soon!