pnichols and noe-place. I agree with you. I should install rear air bags but haven't made the time. If I had a significant sagging problem, I would prioritize it so.
I had rear air bags on my first motor home, a fancy setup in that I had an on-board compressor and controls by the driver to adjust as road conditions changed. But for our PC, I'd simplify as pnichols suggested. Just set the psi and leave it for the duration of the trip.
The air bags in our first motor home were primarily installed to improve stability since there was no rear stabilizer bar available for that Toyota chassis. So I too have experienced improved stability with air bags. There was a compromise between a soft ride and stability. Most often I'd have around 20 psi when handling was not an issue, but 60 psi or more when conditions required more stability.
On that Toyota chassis the rear bumper height varied 3" between the recommended minimum by the manufacture of 15 psi, to max height. Each chassis varies differently.
ADDING PICS OF AIR BAG CONTROLLER & COMPRESSOR
Control unit near the driver's left knee, the dial and 2 buttons.
On-board compressor at bottom of pic, mounted inside a dinette bench.
