I can see spinning the bearings occasionally as being good for them (perhaps only for lubrication), and I can believe it would be good for the tires
to not sit on the same spot for the whole time, but I don't see any significant benefit to the springs of relieving the weight
would still be holding the trailer weight
for the whole time anyway if it were in use (rather than storage). While being stored they will not be subject to movement, and thus not subject to stress cycles or extremes, which are more important to steel fatigue than constant stress. I am assuming that this Bigfoot
has steel leaf springs, as is standard for every Bigfoot
I've seen, and in particular the 1500 (including 15B17C
and 2500 series.
I'm not at all sure about the tire deflation
plan: it seems to me that lower pressure might be worse than leaving them fully inflated, due to the additional sidewall deflection. I suppose lower pressure in proportion to the reduction in load makes some sense... in the case of getting the tires entirely off the ground, any pressure which keeps the tires on the rims would then be okay, and there would be no sidewall deflection. Where's Steve-the-tire-guy on this one?
has a similar frame and suspension configuration. If putting the trailer up for storage I would put the jackstands
under the frame immediately behind the rear spring mounts.