Tyre pressure shouid be checked when jacked up off the floor? warm? hot? cold?

Question from narinder, 13/01/2011 :Tyre pressure shouid be checked when jacked up off the floor? warm? hot? cold?
Answer by rezulteo, 13/01/2011 :

Tyre pressure should be checked at least once a month (including spare wheel), with the vehicle on the floor, and tyres cold(the vehicle should not have been used on the last 2 hours, or have been driven less than 3 km).

However, you could check your tyre pressure with hot tyre,by adding0,3 barthe OE recommendations butnever deflating if the value exceeds these recommendations.