Hello, I have registered here after frequent reading. I am Max , 20 years old, come from Minden (Westphalia) and currently drive a MX-5 of 99′. I was earlier at the gas station to check the air pressure. The device has on three wheels indicated 1,9 bar, except back left . 0,3 bar … Cann’t be that you see / notice … other tires 1,9. valve on corrosion or anything else… connector right pressed on the metal valve.. To my fr age it may be because of the relatively hard side walls of the tires (205ers with small cross-section on a 9J rim..) , since they are so stretched maybe that I don’t notice that? You have to notice that, I’m really not a layman now..as a car’s driver…