I just bought Douglas radials at Walmart for my daughters Civic but didn't see a Douglas tire specially labeled for trailers. Walmart had trailer tires mounted on rims in the sporting goods area but they were bias tires and not radials. I stopped using radials for my trailer boats because they sway easier. Here's a link for mail-order trailer tires with rims...pretty reasonable if you want regular trailer tires. www.trailerpartsandsales.com/trailer_tires.htm