Was helping another member trying to find an off brand tire's manufacturer. Did a bit of web finger walking and found this info and way to find out the name of your tire's manufacturer and what country they were made in....
On the sidewall of your tire, find the raised letters DOT. To the right of those letters you'll see a code, starting with two letters and either letters or numbers next. You only need the first two letters.
Next, go to a web site, D.O.T. Tire Plant Codes. Along the top you'll see sub headings for different series of numbers or letters. Find the one that matches yours, hit it, and it will bring up a list of manufacturers of that particular tire, and the country it was made in.
As an example, tires on my Subaru have letters FD. Went to the site and it brought up that their Yokohama's, out of Japan. And, they are Yokohama's.
Thought this might help in determining where a lot of off name branded tires a lot of you have on your trailers.