I took my molded running boards off that run front to back off to see what I got. Found a lot of little rust bubbles around the bolts that hold them on and a 2-3" rust hole at the rear of the left front fender on bottom. The hole was there because the drain was plugged and filled with dirt/mud/salt. I patched that panel cleaned and touched up all paint myself. Fortunatly all the work is hidden by the runng boards. If you got fender flares or these full running boards it dosent hurt to take them off and take a looksie. Other than the drivers door my 99 is in pretty good shape.