One day shortly after I got home from work, Wendy was outside. She came in and yelled at me to check my tires. One of them looked flat.
Sure enough, when I went outside it was looking pretty low. I got out my tire pressure gauge and checked. As I bent down I saw something stuck in the treads. It looked like a little piece of metal. I started to push it, thinking it was just stuck. As I did, I heard the "psssssssst" of a deflating tire, and I saw the threads of a screw coming through the rubber of the tire!
The time was 5:30. I tried calling the dealership to see if it was something they could repair, and, if so, make an appointment for the next day. They close at 5:30. I couldn't get through. There was no guarantee of an appointment the next day. I checked the 14 day forecast to see if it would be going above 15 degrees much. Thankfully, it wasn't. I had an hour of daylight left. I scrambled and got my winter tires on in just over an hour.
When I got the tires on, I checked the pressure. 3 of the tires were right about where they should be - within 1 psi. One of them was down 20 psi! Great! Now I have to keep an eye on that tire all winter.
It's been a few weeks now. So far so good.