Hi All Living in frigid Southern California, I don't have to worry so much about winter tires, but last week it was cold enough to cause my tire pressure sensors to go off on my 2009 e92. My question has to do with the fact that it took me a while to find a gas station with a working air pump, and by that time, my tires had warmed up, inflating the tire pressure from what they would have been that morning. It was difficult to gauge how much to add, since all the tire pressure guides indicate "cold" tire pressures. How much does tire pressure change going from cold to "warm"? I know that will depend on how cold vs. how warm, but is there a general 5psi or 2psi guideline meaning that a cold 32psi tire will generally warm up to 35psi or something like that? Also, there is a sticker on my door frame identifying that I can increase the tire pressure for travel under 100 mph. What is that? I've ignored it, but can someone give some insight into what that is? Thanks in advance!