Do I get a 3rd attaboy as I checked the spare?
And I used a quality (liquid filled) gauge, not a 25¢ special.
My tires are inflated so wear across the tread is consistent - which means the rears are a couple pounds lower, fronts couple higher than what is on the door as that matches the normal load/my driving style. Alignment is slightly off spec too to compensate for my driving style.
And yes, if I'm going to be hauling any sort of load, any sort of distance, the pressure in the rears is adjusted to compensate. I don't get enough extra mileage over inflating tires to max sidewall pressures to compensate for wearing out centers prematurely.
My '17 F-150 has a screen on the dashboard display which shows pressure of each of the 4 tires. Isn't it less lazy to get Ford to fix the sensors under warranty so after you can check the pressure from the driver's seat, than chuck all 4 tires monthly?
I can confirm what 8thTon is saying with F-150: Pressure fluctuates a couple psi between 1st thing on -40 °C winter morning versus after couple drive on + 40 °C summer afternoon. And hooking up to the camper will increase the pressure in the rears by about 5 psi.
Back to original question:
I was looking to put ABS in my Ranger as all threads I could find just had comments on how useless it was.
What I came up with is Ford used 4 sensors on Ranger of your vintage, 8thTon: Left Front, Right Front, Rear Axle, and an Acceleration sensor (it's on the harness to rear basically right below driver's seat). And it uses a bunch of conservative settings designed to help someone who wasn't paying attention save themselves from a worst case scenario.
Stabbing the brakes will result in wheels slowing down faster than the engineer's programmed value (they were most likely programming again emergency stop brake slam). The engineer is trying to balance rates new dry summer pavement with icy cold winter and going to error on conservative side. So ABS is going to kick in and they aren't going to work as well as non-ABS in ideal conditions.
Similar goes for deceleration of either front wheel or rear axle - if it exceeds the programmed values, ABS kicks in. You're not supposed to do 1G stops in your Ranger.
Now, you flash forward to the '19 Ranger and Ford uses additional sensors, e.g. radar, to check if truck is really decelerating fast on dry pavement, so no need for ABS, or if its on ice and ABS needs to kick in.
If you can some how fool the acceleration sensor and/or reprogram its limits, your ABS will be less abt to come on.
Hope this helps.