Originally Posted by dkomeshak
Yes, the same thing did happen to me - after the weather suddenly turned cooler. I just topped off each tire with a few pounds of air - even though they all read correctly - and it "fixed" the problem. I sometimes question the accuracy of the guages we use. I have 3 or 4 and they all differ by a pound or 2. My most accurate seems to be the one I bought for our travel trailer. It's got a higher pressure reading. My other ones are only good for 50 pounds and this one can read up to 80.
I had the same thing happen to me when the weather in my neck of the woods turned cooler last fall. Actually its typical for that to happen, which makes regular tire pressure checking a must do on the Xfire (and any other car for that matter). The amount of pressure in a "cold" tire will differ depending on the season.