Dear Yogi8888 Thank you for contacting FOBO, This is purpose of using TPMS and got real pressure after riding bike and tires get warm and pressure is increasing, If you need more details and investigate your sensor's data, Please send us a log files of your Bike’s profile by going into App settings, then tap “feedback” to fobo@salutica.com.my then we will check details, We look forward to serving you better. Best Regards Amir Bayati FOBO Support Team