It won't be spot-on, but as missing lincs mentioned above even the weather makes a difference.soewhaty wrote:Does that 1km journey heat up the tyres THAT much so as to get a wrong reading on the gauge at the station (and then subsequently a wrong top-up of inflation on my part)?
It can be inconvenient to drive to a place to measure the pressure when a tool is available for home use and very cheap. Its available in this link to a LCD Digital Tyre Pressure Guage on amazon. If the tyre doesn't need air then there is no need to drive
While you are checking tyre pressures, it is also useful to check every so often the tyre tread depth by using a smart tool like this digital one or inspect the tread wear indicators (TWI) on the tyre tread.