That's awesome! You just ignore the alarm? I am going to lower mine today. Thanks for this. I have been on a rant lately about tire pressure. Never have we run above 28psi with no load on a half ton. Now it seems we have to have 35. We put winter tires on a new sierra and the thing has turned in to a back breaker. Was saying that I would be going back to a 150 if this is what a GMC is like but I don't remember it being this rough before these tires. The tire shop guy wouldn't inflate less than the sticker on the door but I will!
But keep a few things in mind:
1. My truck is just a glorified grocery hauler, as in a week at a time for two
2. The pressure pic you see was taken Arizona, not much -30 action there and you can lose 4 psi due to simple temperature change
3. Just checked my cold soaked truck in a +10 garage, it's 30/25 f/r, that is more what I recommend due to above factors
4. Ford changed tire pressure wheel sensors for '17, they are very accurate and interesting to watch, you can even see a difference if travelling E/W steady you can get a 5 kpa higher sunny side. By the way, it's more accurate on kpa, finer increment but don't brother changing from whatever you are use to (read psi, lol)
Getting rid of splash warning on instrument panel is a one button push every time power cycled, pita but a worth it one.
Wish you could lower it to about 20 psi.
5. If wrong I'll edit but I think my truck, full fuel and me is 860 F 680 R kg.