Questions RE: Rear air bags for full size trucks

Run down I20 with 19,000 lb GVW and see if you done think you're on a bucking horse. That's why I have Airlift. Has nothing to do with how much wt the truck will carry. A Peterbilt has Airbags on each side of the rear axles, under the cab and airide seats. I could go to 120,000 lb GVW with permits. Timbrens are bumpstops, by the time they work, you've hit bottom and your Bottom.