Wow, good thing you checked those tires. I hope fixing that not only helps improve your safety, but your mpg as well.

The things we discover in our quest for higher mpg...
I received an air compressor for Christmas ( I actually asked for one). Today I was checking the tire air pressures on my HCH and my old car, which is now my daughter's. I decided to check those silly "donut" spare tires while I was at it, and it's a good thing I did. The older car's spare had nearly "0 psi" in it (we probably never checked it since we bought the car in 1991!), and the Honda's spare had half the recommended psi in it. So I fixed that situation. People, check your spare tires as time goes on, or they might not be very useful in an emergency.

If you're not part of the solution, you're part of the precipitate.