Trailer owners, this 2-pack of ST175/80D13 tires mounted on rims is exactly what you need for reliable towing. These aren't just any tires - we're talking serious 6-ply rated (Load Range C) construction that can handle up to 1,360 pounds per tire. The dimensions are perfect for various trailers: 175mm section width, 23.74-inch overall diameter, mounted on 13x4.5-inch rims with that standard 5-lug 4.5-inch bolt pattern. The premium rubber compound combined with deeper tread patterns gives you excellent traction and evenly distributes weight across all tires, which significantly reduces blowout risks when you're carrying heavy loads. The full nylon cap ply construction means these are built tough for maximum durability and puncture resistance. Whether you're hauling a travel trailer, cargo utility trailer, boat, farm equipment, or using them for airport tugs and construction trailers, these tires deliver reliable performance. Having them pre-mounted on rims saves you the hassle and cost of getting them installed separately. They're ready to bolt on and go, which is perfect when you need quick replacements or want to have spares on hand for long trips. The black finish looks professional, and the quality construction means they'll last through many miles of towing.