I assume you have an E450 chassis (being that your rig is a 2016 Class C).
On my E450 chassis I have room behind the 55 gal gas tank.
I had to deflate tire to 10-15#, but it’ll fit.
Then added a couple of cross-bars to keep in place.
I carry overalls so I can crawl under once I Jack up rear with my hydraulic levelers.
As stated above…there are many threads on this subject including several who describe adding a “lowering” mechanism taken from a truck.
'17 Vegas 24.1