Had this nail in my rear tire......
Thankfully however, I saw the guage saying low tire pressure, fired up my Blackberry Curve and did a search for tire shops near me, drove into one and my tire was already close to the rim.

This nail caused 2 separate impressions, the hole itself and the 'smooth' side was pressing against the sidewall where the tire and rim meet. So there was air escaping from there as well. Well, they plugged the hole successfully but it was still leaking. Used the Fix-A-Flat thing under the passenger footwell and I used the little pump and the included fluid to fix my flat. I was astounded because I didnt think it would stop it since it was so close to the rim. But it did.
Now I need a new rear 175/55/15 tire. Gotta go to Merchant tire on Friday and get it installed after I call them tomorrow and order it.
The only maker is Continental ContiTire.

And NO ONE stocks these tires.