The best 225/75R15 trailer tire depends on your trailer’s required load range, tire construction, and intended use. The Free Country set is best for buyers seeking four radial tires with a full-tread nylon overlay and scuff guards. The HORSESHOE set suits buyers who need a 12-ply, Load Range F option, while the Transeagle ST II and ROCKMAN are 10-ply radial choices. Transeagle’s TE898 is a bias-ply alternative. Confirm the tire size and load capacity required by your trailer before choosing.
| Product | Construction and rating | Best for |
|---|---|---|
| Free Country Grand Ride | Radial, 10 ply, Load Range E | Four-tire set with added sidewall protection |
| Transeagle ST II | Radial, 10 ply, Load Range E | All-season highway trailer use |
| HORSESHOE LIPIZZAN ST-KING II | Radial, 12 ply, Load Range F | Buyers comparing a higher stated load capacity |
| ROCKMAN Trailer Tire | Radial, 10 ply, Load Range E | Buyers prioritizing a full nylon cap ply |
| Transeagle TE898 | Diagonal, 8 ply, Load Range D | Buyers seeking a bias-ply option |
Free Country Grand Ride Set Of Four
This set includes four ST225/75R15 radial trailer tires rated 10 ply, Load Range E. Free Country lists a full nylon cap ply across the tread, rather than nylon strips limited to the shoulder area, and a Scuff Guard ring on the tire wall.
Best for: Trailer owners who need a four-tire replacement set and value the listed tread overlay and sidewall-protection features. These details distinguish it from options in this list that do not specify a Scuff Guard.
Limitation: The provided product details do not state a maximum load figure. Check the tire’s full specifications and compare them with the trailer’s requirements before buying.
Transeagle ST II Radial Tire
The Transeagle ST II is an ST225/75R15 steel-belted radial tire with a 10-ply rating and Load Range E. Its listed service description is 117/112N, and the product details specify all-season traction, a highway design, and one black sidewall.
Best for: Buyers seeking a single radial tire for all-season highway trailer use who want the listed 10-ply, Load Range E construction. Choose it if those specifications match the trailer’s tire requirements.
Limitation: The supplied details do not give a maximum load in pounds or describe added sidewall guards. Verify the tire’s complete load information before purchase.
HORSESHOE LIPIZZAN Set Of Four
This four-tire set is sized ST225/75R15 and rated 12 ply, Load Range F. The listing specifies a maximum load of 3,085 pounds at 96 psi cold, a 120/115M service description, and a full nylon overlay across the tread. It also lists a Rim-Guard-Wall, 7 mm tread depth, and a 15-inch rim diameter.
Best for: Buyers whose trailer calls for the listed Load Range F specification and who want a set of four with stated load details. The sidewall and rim guard features are additional distinguishing points.
Limitation: The listing says wheels are not included. Its stated load and pressure figures should not replace checking the trailer and tire manufacturers’ requirements.
ROCKMAN 10-Ply Radial Trailer Tire
The ROCKMAN is an ST225/75R15 steel-belted radial tire listed as 10 ply and Load Range E. The product details highlight a full nylon cap ply across the tread and 8 mm tread depth. Its listed load index is 117, with a stated capacity of 2,830 pounds, and the speed rating is 117, described as up to 81 mph.
Best for: Buyers comparing 10-ply radial tires who prioritize the listed full-width nylon overlay and want a stated load figure for evaluation.
Limitation: This listing is for a set of two, not four. Check how many tires your trailer needs and confirm the stated load capacity against its requirements.
Transeagle TE898 Bias-Ply Tire
The Transeagle TE898 has a 225/75D15 size designation, which indicates a diagonal or bias-ply construction rather than the radial construction of the other products here. It is listed as 8 ply, Load Range D, with a 113/108L service description, all-season traction, a highway design, and one black sidewall.
Best for: Buyers specifically looking for a bias-ply trailer tire and whose trailer requirements call for this size and rating.
Limitation: Its size is marked 225/75D15, not 225/75R15. Do not treat the D and R designations as interchangeable; confirm the required construction before ordering.
Buying Guide: How To Choose 225/75R15 Trailer Tires
Should you choose radial or bias-ply construction?
Radial tires are marked with an R in the size, as in ST225/75R15. The Transeagle TE898 uses D for diagonal construction, so it is a bias-ply option, not a direct construction match for an R-size tire. Follow the trailer maker’s tire requirements and do not switch construction types without confirming suitability.
What load range and capacity do you need?
Match the tire’s load capacity to the trailer’s specified needs. Load Range E appears on several options here, while the HORSESHOE is Load Range F and lists a maximum load of 3,085 pounds per tire at 96 psi cold. Do not assume that ply rating alone establishes whether a tire can carry your trailer’s load. Check the full tire specifications and the trailer’s information label.
Are you buying one tire or a complete set?
Compare package quantity before ordering. Free Country and HORSESHOE are listed as sets of four, ROCKMAN as a set of two, and the other listings describe individual tires. Confirm the number needed for your trailer, including any spare.
Which extra features matter?
Look for features that address your priorities, such as a full nylon overlay, a sidewall scuff guard, a rim guard, or a stated tread depth. These features vary by product and should not substitute for matching size, construction, load rating, and pressure guidance.
Frequently Asked Questions
What does ST mean on a trailer tire?
ST identifies a tire designed for special trailer use. Confirm that your trailer calls for an ST tire and match the remaining tire specifications as well.
Can I replace 225/75R15 with 225/75D15?
They have different construction designations: R is radial and D is diagonal. Confirm with the trailer manufacturer or a qualified tire professional before using a different construction.
Does a higher ply rating always mean the right tire?
No. Check the required size, load capacity, load range, and other specifications together. Ply rating by itself is not enough to establish fit or suitability.
How many 225/75R15 tires should I buy?
Buy the number required for your trailer and consider whether you need a spare. Check package quantity because listings may be for one tire, two tires, or four.