What is the MIN PSI as posted on the door sticker? Whatever that is the where the warning light will come. I know if I air down to 35 PSI the warning lamp comes on and there is a chime one time. when the tires heat up and go above 36 PSI the light goes off.
As was mentioned by Grit Dog "since the system and its operational parameters were determined by the NHTSA, not the individual mfgs." So there is not a thing Ram, Ford or GM can do to change those parameters.
Remember the Firestone/Ford fiasco when Ford demanded a lower PSI setting then what was marked on the tires! All in the name of "ride quality"! Didn't work out very well for anyone did it? Not Firestone, not Ford and certainly not the people that where killed and injured.
We now live in a world of nannyism do to a few people that can't or won't fallow simple rules. Just look at the mess we have with diesels and all of the EPA mandates. Why because trucking and bus companies won't maintain their vehicles and redneck hillbillies want to "roll coal" and be cool. Now we get to pay the price.
Same holds true within the RV community. How many people think it's OK to dump their gray water on the ground. Their are even a few that think it's all right to dump their black tanks on the ground.
As for the OP you are fighting a losing battle Rob. The manufactures can not side step the Feds.
Don
