Hello all... I did to some searching around here before posting this, but may just be missing what I am looking for. I am about 33% into a reno of my camper and am ready to put the wheels back on. The existing ones are 155/r12... and having been sitting in the sun for 20+ years, they are shot. I have been pointed in the direction of using 5.30/12s but would like some more input on that. Also... since it has been sitting so long, should I regrease the axel (it spins VERY smoothly) or should that be OK?