These trailer tires are DOT approved for high speed use on US Highways.
These radial 12" tires use the same size rim as a 4.80x12 or 5.30x12 tire. Usually a 12x4 or 12x4.5 wheel is used. They carry a load of 1220lbs per tire when filled with 65PSI of air. Radial tires are best when trailers endure long trips, the radial design allows the tire to sit "flatter" on the road, allowing more tread to meet the road. This improves the tread life of the tire. While these tires may be a bit more expensive than bias ply 12 inch tires, you can be assured that you will be receiving a quality tire made by Kenda.
This tire commonly uses a 12x4 wheel, but can use a 12x4.5.