An air compressor can be a great addition to a RV - if you have room. Not only can you keep the tires properly inflated, but it also helps to inflate bicycle tires, water toys, and the like. And as we still have a Dinghy, we can inflate that as well. And what camping trip doesn't include all of the water toys, mattresses, and other things that need inflating.
While we do have road service for our RV, it is really inconvenient to wait an hour for someone to show up to put air in your tire. Yea, they can change the tire, but you should be able to keep the tire inflated yourself. And since we have a genny on board, we can always be self-sufficient (unless we are less than 1/4 tank full of gas, in which case the genny won't start).
The storage area of my RV has a couple of deep storage bins under the main compartment, with covers. The covers are a plastic, typically called Starboard (King Starboard, or SeaFoam), and widely used in the boating industry for many purposes. I initially was going to buy a new piece of Starboard so I would not have to cut up the existing piece... but then I figured it will cost nearly $90 for a new piece - and the Air Compressor is only $99. So it is not cost-effective to spend $90 to return the RV to pre-air compressor mode if we ever sell it.
The Air Compressor simply attaches to the Starboard by drilling three through holes and attaching the feet through them. The bolts are the captive nylon type that will not loosen, so the bolts themselves are not tigntened down very much. This will allow the rubber feet to absorb most of the vibration of the Air compressor.
One thing I did have to change on the Air Compressor is the air relief valve. The stock item was very difficult to open, so I found this replacement valve that allows quick and easy release of pressure. I highly recommend replacing the old style valve with these.
The Air Compressor itself can develop 150PSI, which easily handles my RV's tires (typically they take 80PSI), and certainly anything found around the campsite.