[SCOTI]

Originally Posted by vet57air

For a fleetside. The tightest spot is where the seam runs down the box side horizontally. Normally stock tires are under this so there is no issue. My large diameter tire along with being so low it is.
I believe I could be as close as a 1/4" as I have a 4 bar suspension and really only have about 3 1/2" of total suspension travel. But would like to hear of others experience.

I don't remember.... Is the seam between the upper/lower bedside halves trimmed @ all or untouched on yours? 1/4" is pretty tight. If you leave it @ that gap, is the seam visually exposed within your bed set-up?

I plan to trim mine back 1/4" so the spot welds are still intact but allows the tire to be as far out as I can w/an extra 1/4" of clearance (mine measures out @ about an 1/8" gap w/the seam untouched). My seam in that area will be hidden by the tubs though.