bananashoe
New Member
My 2020 Expedition Limited Stealth continues to have tire pressure issues. The PSI increases beyond what I think is reasonable. Even during colder weather 30F, I could set the PSI to 39 and then drive for a couple of days and the PSI would get up to 44 to 46. Took it out on the interstate with temp no higher then 30 degrees F, tires self inflated to 45 to 47 PSI from 39 PSI when cold from sitting in garage overnight. Checked with a good gauge and it reads the same as the TPMS. Had the dealer check the TPMS twice and they set the PSI to 40. 62 degrees F, drove in the city for about 25 miles and they now read 44 to 45 PSI. Running Hankook Dynapro HT 285/45R22 114H.