To rely on an air bag system you will have to get the leak rate down to just a few PSI over night. Usually fittings are the culprit. Check all joints with soap suds all the way around. It is a good idea to have a compressed air source on board so you can refill as needed. The system in my tug took a few weeks to locate all sources of air loss, as I was not looking carefully enough at first and missed seeing bubbles on the back side of some fittings.
Once the leaks
are taken care of you should get many years of trouble free service from the bags.
Simple systems require less maintenance than complex ones, but are less convenient to use.
Simple = 2 bags, 2 short hoses with shraeder valves for filling. You find air somewhere.
If you link the 2 bags together and have one shraeder valve, air will travel to the inside bag during cornering letting the outside wheel squat.
Complex= Onboard electric air compressor feeding a small air tank. Airline from tank to dash mounted air valves and air gauges for left and right bags. Accessory air chuck Tee'd off of tank for tire filling.
Pressure switch keeps tank topped off. Manual override switch to kill system. This system is what I did in our tug, and is convenient to use, but more piping to leak check.