Originally Posted by Jared J
It's not all about getting the axle off the ground. An axle can be drug with almost always no problem. It's the approach/break over/departure angles that get you, which a stock scamp 13' basically has none of.
Steep driveways can be a "drag" so to speak is a real problem, especially once the rubber is shot. As can going over any abrupt change up or down with the TV before the camper wheels engage the change. Into and out of a sharp back road dip or gully can give you a scuffed rear or front along the bottom edge. FG no like being dragged.
I don't think lifting the axle alone would do a whole lot. Especially not if axle is shot, bigger wheel would just push suspension arm up more. Shocks or springs would be a band aid or duct tape solution.
Thing is most axle lift arrangements put the riser between the axle and the frame which provides no overall increase in ground clearance for the axle shaft, and by itself does not provide much real help at the leading a trailing edges of the trailer on a 13 foot.
If you combine a little more lift for the axle mount with more down angle on the axle arm (or adjustable angle) , and position so that axle spindle travel in the wheel well is good (won't rub) for a larger wheel and taller profile tire you pick up more usable
ground clearance. With the downside that you probably now need a step to get into the trailer comfortably.
A new axle may provide better suspension from a towing standpoint since it will do a better job of keeping tires
on the road and have less bounce and sway. Since new axle provides a stiffer suspension I'm not sure it would yield a softer ride for the items inside the camper. Stiff shock absorbers don't yield softer ride, and new rubber would generally be a stiffer shock absorber than old rubber.
I debated going with higher lift when I replaced my axle, decided in the end that ease of entry and keeping the trailer tucked down in behind the tow vehicle (Ford Escape) was the option that worked better for me. So my new axle restores original ride height with maybe 1/2 inch of additional height.