ENTS,
Check this out. I mentioned this tree when I first posted about the site where it's at, which is on the edge of a site where there's an abandoned building in the woods. This is in South Egg Harbor, Galloway Township, Atlantic County, NJ (maybe 2 or 3 miles from here).
The tree grew up sometime after the tire was put there. Each trunk is maybe 5 inches in diameter, or a little bit more.
Photo taken February 10.
Enjoy,
Barry