Applications Case:
My trailer is installed the TPMS. And it really sounded an alarm that
when my tire was punctured by a nail and leaked. Fortunately, I was
about to connect the trailer to the car when I found it, not moving.
I don't care about the difference of 1, 2 psi, because when the air is
really leaking, it will drop more than 10 psi. This is very dangerous
when traveling.
Another advantage is that you can detect
that the tire pressure has become higher due to temperature changes.
Once I changed to 38 psi when the car was cold, but because of the hot
weather, it changed to 43 psi. This is close to a maximum of 44 psi.
Fortunately, there is TPMS and tell you, You can stop in time and
deflate.