2008 F250 5.4 regular cab. Having 80 psi in the back and 75 psi in the front tire doesn't give the best ride in the world if you're not loaded down. I can remember changing the parameters for the TPMS to a lower setting on these vehicles in the past. Maybe those were newer trucks. But today I plugged in and hooked up and FMP only gave me the option of raising the settings. Unsafe ???? The nanny state continues......