CX30, 2.0 L, Executive, 2020, Snowflake White Pearl Mica Paint
My mechanical pressure gauge was always, for all my cars, very precise. No difference between TPMS in the car and the pressure gauge. I recommend you to buy a good , expensive and reliable gaugeI'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.