I am asking this because the first time I checked my less than one year old car's pressures they were around 32 or 33 PSI - I cant remember exactly, but I noticed the recommended pressures, which are found on the inside of the fuel flap, are 2.7 bar for the fronts (that's 39 PSI) and 2.9 bar (42 PSI) for the rears. Are they recommending such high pressures because it makes the official fuel economy figures better? I believe Porsche do this with the latest 911.