Air Suspension-- Air Bag Replacement

[Air Suspension-- Air Bag Replacement]

How ofter should the air bags / springs in my air suspension be replaced? Mine have some rubber cracks but look much better than most of the other RVs I inspected before buying this one.

Do owners replace them regularly before they fail? Is there a recommended replacement interval? Most of the diesel pushers have air bags under them with cracks in the rubber surface. Is this normal or should they be replaced?

I have seen some really weathered ones that have not given their owners any trouble, but I want to avoid issues without wasting my $...

Thanks,

Eric

[2004 Freightliner XC Air Suspension Question]

How dificult is it to change my Neway suspension air bags? They look good overall but each has a couple areas of rubber cracking around the base when inflated. How do I know when they need to be changed out. I am pretty mechanical and would like to do the work myself if it is reasonalby easy.

Thanks,

Eric