Originally Posted by Boulevard
I have used add-a-leafs in the past and I will in the future. Adding an extra long leaf is the way to go because it does a better job of controlling spring wind up. If you want to keep the ride height down that you can replace the long leaf that you have with a thicker one. Any of these 2 changes can be done at a good spring shop for a lot less than buying some boutique spring and having it installed at a some garage. You may also be surprised at the level of expertise that a good spring shop will bring to the table.
Not really sure how this is the way to go? adding a extra leaf may take a little bit of axle wrap out but does not do a better job of supporting the load. You are still putting all the load force and weight on the springs. I have not owned a truck yet that has not had a broken spring do to weight. With airbags you are releaving some of the load weigh strait down to the axle taking the strain and pressure off the leaves. I have not personally see a truck that has been running bags with a broken spring and i work in a rv park and see a lot of heavy loads. My boss also runs bags and hauls heavy loads over some extramly rough terrain and still going strong with stock springs and bags.