Ummmm, I dont buy that..... Yes, cold makes metal shrin, in fact I recall many years ago there was a long railroad bridge that shrunk so much in the cold that they had to shut it down and put supports under the ends because the ends were coming off the supports. and I have also seen the opposite in the summer when it gets real hot, long stretches of freeways will actually buckle because the concrete expands and has no where to go.
With that in mind, I would assume the air volume in tires might also shrink, and the metal rim may shrink in a very small amount, but I dont see how it could "take air out of the tires". At the same time, does air shrink in the cold? I really dont know. I just know that metals and concrete does. Unless someone knows something different, I think this thing about tires losing air is false information. What do you think, or know about this? I'm curious now.