I'm thru taking the fiver out for the winter. Probably won't go out again for 5 months at least. Do you raise your rv so the weight is off the tires? I never have in the past, but at the price of tir...
It doesn't matter what kind of vehicle it is, if you want the tires off the ground, use jacks stands under the frame. To life completely, at minimum of 4 jacks, one on each corner of the frame. More is better, mid way for 6 and in sections of 1/3rd for 8.
You do not want to lift the camper by the axles. You will run the risk of bending them. Lift at the frame near the axles one side at a time, and rest the frame on several points of contact. Then do the other side the same way.