TEN pounds of pressure. There should be 35. Thankfully, there was free air at the gas station and so I filled up. Once I got the pressure up to about 30, I started hearing this hissing sound, and quickly located bubbles coming from in between the treads. I could see the leak.
Soooo, we decided that I would high-tail it to the dealership to get it checked out/patched/replaced/whatever because a fast leak is a dangerous leak and there ain't no way in hell I'm gonna tempt that sucker to blow out.
I'm still at the dealership, and the mechanic guy -- who is super nice and has a great sense of humor -- came and brought me the culprit.
I'm keeping it.