So I am curious what type of Jack you carry to be able to do a roadside Tire Change in our "Try to kill the guy changing the tire" roadside climate these days?
I am not sure that my trucks jack will work and I prefer Scissors jacks from experience but they are getting pretty tough to find these days and I am thinking I will need a pretty good reach to lift the box now too.
I am skeptical of the floor jack as wheels on a jack just seems like a bad idea to me on the roadside?
The tiny bottle jacks seem powerful enough but also pretty tippy as they are sold.
Maybe the HiLift is the answer and they have a lot of other uses too and can be customized for a lot of different applications.
I also have a Casita which seem prone to blowouts and I think I have had more than my fair share of them so there is that too!

Mine is a single axle too.
So lets see what you got,blocks and chocks too!
Thanks
Ed