1. The problem statement, all variables and given/known data Why should we check pressure in a tire when the tire is cold? 2. Relevant equations ... 3. The attempt at a solution After Googling around, I found a statement saying that when a tire is "cold," it means that it is at 'room' temperature, or the surrounding air in this case. Therefore, when a tire is "cold" it is in thermal equilibrium and thus will give an accurate reading of tire pressure, is the answer I want to go with. However, why on earth would "cold" translate to "room temperature?" Isn't cold... well, cold? If they said 'cool,' it would have made sense. What's up with this?