lenr wrote:
Ford TPMS will go off at about 75% of sticker rating so that is about 60 psi rear for a 350. All the end user can train is position. By training the wheels backwards front to rear and running the pressures down at 65 front and 55 rear one could probably keep the TPMS from going off. Some dealers will set the trip limit down, but others will not because of liability, and it definitely takes a program change.
You beat me to it.... I am a fan of inflating tires to a load chart, but Ford makes sure you can't run correct pressures without the nagging TPMS.