A week ago in my tire check I found a tire to be reading 26 PSI while others were on the dot 35 PSI. It was a no brainer, I inflated it back and took it back to the shop where I got them, they found a nail in it and repaired it. The next morning I set them to 35 PSI, when my garage was at 45 degrees. Today I checked them again, the garage was at 72 degrees. All tires read 36.5 PSI, except for the repaired one, which was at 35.1 PSI. Seems it had leaked a little. I think the repair wasn't done right. I am going to keep an eye on it for a while with my weekly pressure check and see how this pans out. I have never had a repaired tire lose more air than one that was never injured.