Ray, since you undoubtedly intend to be a long term Prevost owner you will need to collect the goodies that are specific to the coach and that make life easy.

Among those tools and devices should be tire pressure gauges and fill valves so checking them all is pretty easy. I use "straight foot" integral fill / pressure valves such as made by Milton. Going further, the caps on my valve stems (until I put the new ones on) are the spring loaded type that do not have to be removed, so checking pressure is as easy as pushing the gauge onto the valve stem. The length of the gauge is such I just reach through the hole in the outside drive wheel until the gauge hits the inside wheel valve stem.

As an option that I do not recommend (nor do the tire manufacturers) is an extension to the inside drive wheel valve stem which puts the stem in sight. About 15 years ago Prevost made it clear that there were failures of the inside drive wheels because the extension was stressing the valve stem due to centrifugal force and the stems were fatiguing and failing. They are still sold, and can be the braided hose type or the straight tube type. If you opt to go that way just be aware of the risk.

Despite what I just said above I am considering inner wheel valve stem extensions (but supported to minimize the centrifugal forces) when I put the new caps in place because they have to be removed to fill or check my tires. I will continue to check tire pressures, but will rely on the new caps only to alert me to a tire pressure drop that unexpectedly shows up. And they will show up from time to time, sometimes due to something like a nail in the tire, but more frequently due to a valve not seating properly, or a slow leak at the base of the valve stem.

When you are fueling at truck stops see how the valve stems on trucks are set up. That will give you ideas.