Yes I just check what the "system" pressure is, but I can easily see what pressure one tire has in it, just close off the 3 other tires, and measure one at a time, but I don't have to know exactly what pressure the tire has, I just let air out until I feel the truck getting traction and starting to float on the snow then I stop letting air out , and measure what pressure I have, then as I go higher up in the mountains I have to let more air out as pressure rises in the tires, and it's of course the opposite when going down , then I have to air up a little so I'm not running on the rims
I have a little airbox inside the car that has one airline coming from the tank and pumps, then another one going under the truck to vent air out of the tires, then 4 lines 1 from each tire that are hooked up to this box also, valves on every line, so I can let air out of whichever tire I want or measure one at a time, but usually I just keep all the valves open unless i trying to go up a steep hill, then I close them up, because then the back tires tend to loose most of the air to the front tires