I've got 4 tires that you can look at when you swing through here. All the same tire / size - they are R15's. Yours for free. They have good tread, but are starting to dry rot. No rims on them. The XJ we just got was sitting on them for a long time in the sun. All held air enough for us to test drive the Jeep and get it home. One did leak down overnight.
I also have another R15 tire, not the same size as the other ones. Not much tread left on it.
They aren't much, but if they can help you out in anyway, all the better for ya.