Having recently purchased a new (S/H) car, I was checking tyre pressures and found them to be over the manufacturers recommended pressure by some 10lbs or so. I checked on some tyre sites and saw their recommendation that they should be adjusted when "cold" ?!! what does that mean I thought and after a chat with friends some thought 15degC others 20degC.
To cap it all the michelin site says: "They must be checked when the tyre is cold (By cold we mean the ambient outside temperature where the tyre is to be used)." I hope to drive to Spain in the near future and I'm almost certain that the air temperature can vary by about 25deg through the day.
Any thoughts? Don