Safe to have rear suspension lifted for clearance?

SweetWaterSurprise wrote:
I've got airbags for my rear suspension. I can get an insane amount of lift from them.

I have Firestone air bags on my 28 foot class c. I get less than an inch of lift at max air pressure. I called Firestone and talked to a tech who said if your E450 rear suspension is at stock height, you won't get any real lift. The air bags are designed to return a sagging suspension back to stock height.