I bought this specifically to check two tires at 110psi. However, this is not possible: the display only supports 2 characters, so the maximum theoretical psi pressure is 99psi. it keeps flashing red and beeping at this pressure. If I change my mind and try to use a device that reads bar pressure I believe it will read high pressure but again the high pressure alarm cannot be set to that high pressure. Print. So overall this is a very good motorcycle TPMS tire pressure gauge if you want to monitor a pressure between 8 and 65psi. THIS DOES NOT SUPPORT THE FULL RANGE AS RECOMMENDED.