2015 International Pro star Cab air bags !

[Rawze]

you most likely have problems with ...

* the front cab mounts are shot.

and/or

* the front cab mounts are uneven height (very common prostar problem).

and/or

* You are too heavy, got too much heavy junk in your cab like chains, lots of tools, etc..

And/or

* your back of cab height is set too low.