Yup. One of mine has been leaking for a pretty long time now. No visible damage on the outside of the rim and I've been told it's pretty corroded. The car started up in the northeast, so that's probably the culprit. I've done everything listed short of the blasting recommended in the previous post, but to no avail. The only cheap solution: a cheap air pump with a 12v cigarette lighter cord and a tire pressure gauge in the car with me at all times.
Luckily, my new rims should be here in about a week.
