TPMS - Newbie worried about what it shows.... is it OK?

You also want to use a good tire gauge, like a Milton brand, when you inflate your tires. From my EEZtire TPMS gauge I found that the pressure is not 100% accurate. I verified this when I used one of the split inflator hoses, which ties two tires together at the same time(like two duals, or two front tires, and I found a few psi difference between what the TPMS monitor read, even tho both tires were inflated to the exact same psi.