Find an ST205 75R15 trailer tire to match your trailer’s replacement needs. Browse trailer tires in this size, and check each listing’s load range, weight capacity, and speed rating against your trailer’s requirements before choosing.

An ST205 75R15 trailer tire is worth a close look if that’s the size listed for your utility trailer, boat trailer or other tow-behind rig. Often written as ST205/75R15, this trailer tire size tells you several things about fit: “ST” stands for Special Trailer, “205” is the nominal tire width in millimeters, and “75” means the sidewall height is 75% of that width. The “R” identifies radial construction, while “15” indicates the wheel diameter in inches. Special Trailer tires are designed for trailer service rather than the steering or drive positions on a tow vehicle. Before choosing replacement trailer tires for trips to the feed store or hauling equipment out to the property, check your trailer’s tire information label and owner’s manual. Matching the ST205/75R15 size is an important starting point, but you’ll also need to confirm the required load range, weight capacity, speed rating and wheel compatibility. Choosing an ST205 75R15 trailer tire means looking beyond size alone, especially if your loads change from one trip to the next. Tires with the same size marking can have different load ratings and inflation requirements, so check the specifications for each tire rather than assuming they all carry the same weight. Your tires must support the loaded trailer without exceeding any tire, wheel, axle or trailer rating; installing higher-capacity tires does not increase the trailer’s rated hauling capacity. Follow the trailer manufacturer’s cold inflation recommendation for the specified tires, and confirm the appropriate pressure if you’re changing tire specifications. Before heading down the road, inspect your radial trailer tires for cracks, cuts, bulges, uneven tread wear and embedded objects, and check pressure with the tires cold. Follow manufacturer guidance for tire age and replacement intervals, even if the tread still looks substantial. Keeping compatible tires on each axle, carrying a properly rated spare and checking clearance around the fenders can help you stay better prepared for hauling days.

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