tml678
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Like engine oil on a dipstick, tyre pressures change quite a bit with temperature
The only time engine oil level on a dipstick changes with temperature is if the car hasn't been driven for quite a while and the oil is diluted with condensation etc. Then, the first time it is given a good run, the water and contaminants will evaporate, lowering the level a little.
The level will change with day to day driving however. Ie it takes about ten minutes or so after parking it up for the oil to run back into the sump, during which time the level will be a little lower on the dipstick. Nothing to do with temperature however.