not to further confuse the matter.. but i'm going to further confuse the matter ;)
door sticker PSI is for the ambient air we breath (lots of nitrogen, some oxygen, CO2 etc. and, depending upon where you are, possibly lots of water vapor in the form of humidity)
its the water vapor that expands the greatest when heated and that is why race teams use nitrogen or desiccant filtered ambient air.
They want their optimal x psi to remain as such throughout the race even as the tires heat up.
so if you want to control for temperature affects on psi, use dry air or nitrogen.
i have adjustable 2.5 remote reservoir kings
their nice, not any softer ride than stock and the adjustability does not change the compression damping enough.
they are bulletproof though.
and expensive.. man are they expensive
i have an '07 ford and found that 3" foam is best to keep the cabover from impacting the truck when offroading.
The way i did it:
i used monster 2" velcro to attach 3" extruded polystryene (XPS) foam to the underside of the camper (1 less thing to deal w/ as its attached to the camper). Velcro makes removal easy (if i ever need to do it). I water-proofed using eternabond double sided tape (between foam and camper) and finished edges with 3" lexan corner guard (to protect the edges). An aluminum sheet protects the bottom side of the foam.
I plan on custom fabricating some low profile toolboxes that will act as centering guides (wheel-well and forward) and provide useful storage.
the scotts "extra soft" is the 2 ply that folks are talking about.
the single ply scotts does not break up as well and should be avoided.
something not mentioned.. and you are going to learn this lesson the hard way.. is that you *must* make sure the dump hose going into the ground is held securely in place because when you open the waste gate the black water rushes out w/ great force and if the hose is just casually stuck into the pipe in the ground, it *will* pop out and leave a big mess everywhere.
many times around a dump station you will see a large rock used just for this purpose. Use it. People place the rock on the end of the hose where it goes into the down pipe just to keep it in place when you open the flood gates.
i like to get paper towels and lysol-type spray ready before dumping.
That way i can disinfect hands, bottom of shoes and dump tube w/out tracking anything into the camper/truck.
i use the Aqua-Kem blue liquid in the black tank.. its the best (no probs w/ smells at all)
after ea trip, i use a wand, spinning-type thingy hooked up to a garden hose and placed down the toilet to pressure wash the inside of the black tank.
between trips, i pour a little drain valve lubricant into the toilet to keep its (the toilet's) rubber seal in good shape.
i also add a little water softener to the ~5 gallons of water placed in the black tank when the TC is not in use. I have heard this keeps the inside of the tank slick so nothing clings to the walls.
dump station etiquette: dump quickly leaving no mess, hose out the inside of your dump hose (w/ the other end still in the ground), do a quick disinfect and then move the TC forward before finalizing the put-away, disinfection. The people in the line behind you will thank you for it.
before you know it, you will be a pro at this.. able to get in/out of the dump station in just a very few minutes w/ a well orchestrated routine.