Air Bags

Hi Ross. Just my opinion but I feel the blue (Firestone) airbags have better quality air fittings,hose and protection than the other brand. 8 to 10 Lb should be plenty when unloaded. They will go up to around 35Lb with extreme loads in/on the back. Cheers,Bob.

Hi Rosss,

I have Polyair Springs (Red Series) air bags under my GXL. Recommended unloaded pressure is around 5lbs. They also recommend blowing them up before you load the vehicle and then let them down to bring the vehicle back to original ride level.

Lookup Polyair Springs on the internet and you should get some more info.

Cheers

Rob K

I had Blue Air Bag Man one's on a disco 8yrs ago and they were rubbish the top split on 2 different sets didn't even get 1,000km out of either set I only pumped them up to 29psi 1 pound below recommend pressure and towed a 16.6 foot van. The patrol ute I have now has got the red Polyairs in it they are 7yrs old and still good I Have had up to 700kg in the tray and they handled it at 30psi I highly recommend Polyairs if you want them to last.

Manufacturers recommend 5psi minimum, 30 psi max. Personally I recon if you ever need to inflate them fully to level your car you probably need to either reduce the load or fit stiffer springs as the few I've seen with burst bags were all running top pressure. Other issues with them is burst lines from stone damage or rubbing through at the top if the hole in the spring tower has insufficient clearance. Super glue helps stop the line coming off the bag too.
With a lot of loaded outback driving about 7 or 8 years seems to be their lifespan otherwise a great option for variable loads.
Cheers Craig.......