2020 CX-30 AWD Premium
I'm having the exact same issue. TPMS in the car and in the Mazda app show 41-42 PSI on all 4 tires. A check with a mechanical pressure gauge shows all 4 at exactly 36 PSI. Strange.This is weird... Mine have been showing 45-48 psi in the vehicle stats display, but when I manually checked them with a pressure gauge all 4 tires are exactly 36 psi (right where they should be). Seems like something may be wrong with the sensors.