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Carlisle Radial Trail HD ST225/75R15 E
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$160.23
was $180.03
Total savings on 4 tires: $79.20
Estimated delivery time: 2 days
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You're viewing new Carlisle Radial Trail HD Tire | 225/75R15 | Manufacturer Part No 6H04621.
Carlisle Radial Trail HD Trailer Tire
Tow with confidence on highways and back roads with the Carlisle Radial Trail HD. This ST radial is built for stable tracking, effective heat management, and durability under sustained load. A symmetric tread with a solid center rib helps the trailer run straight, and wide grooves move water for predictable braking in the rain. Reinforced construction supports heavy cargo and resists heat on long hauls. Available in popular ST sizes and multiple load ranges, it is a straightforward, dependable upgrade for boat, utility, RV, and cargo trailers.
Features and Benefits
Designed specifically for trailers, the Radial Trail HD pairs a heat resistant compound with a reinforced belt package to handle sustained loads and highway speeds. The continuous center rib enhances straight line stability and helps reduce sway, while the symmetric pattern promotes even wear and long life. Lateral grooves clear water to maintain braking confidence in wet conditions. Most sizes carry an M speed rating, 81 mph, and the lineup covers common ST fitments so you can match the load capacity your trailer needs.
Sizes, Load Ranges, and Speed Rating
The Radial Trail HD comes in core ST sizes for single and tandem axles, including ST205/75R14, ST225/75R15, and ST235/80R16. Load ranges typically span C, D, and E, with select larger sizes offered in higher capacities. Most sizes are M rated, 81 mph, when properly inflated and not overloaded. Match size, load index, and cold inflation to your trailer certification label and axle ratings, and confirm that wheels, valve stems, and suspension hardware are approved for any higher pressure you plan to run.
Popular size: ST205/75R14
A versatile pick for small to mid size trailers, the ST205/75R14 balances capacity with a compliant ride. It suits single or tandem axle utility, cargo, and boat trailers that see regular highway miles, and most versions carry an M speed rating with multiple load ranges. Verify wheel width, diameter, and maximum pressure compatibility before mounting.
Popular size: ST225/75R15 (Load Range E, 10‑ply rated)
For heavier campers and cargo trailers, the ST225/75R15 in Load Range E, 10-ply rated, adds reserve capacity and stability. Expect firm tracking and confident braking when inflated to the listed max cold psi. Confirm that your wheels and valve stems are rated for LR E pressure, and keep a matched set on each axle for even wear.
Popular size: ST235/80R16 (14‑ply rated options)
The ST235/80R16 serves larger RVs and equipment haulers that demand higher capacity and heat resistance. Select sizes are available in higher load ratings, including 14-ply rated options, to support demanding payloads. Use metal valve stems where required, torque lugs to spec, and monitor temperatures and pressures on long tows for consistent performance.
Pricing and Value
The Radial Trail HD delivers value through long tread life, stable towing manners, and broad size coverage. Pricing varies by size and load range, and many owners find the tire's durability reduces replacement frequency, lowering total cost of ownership. Look for bundle savings when buying axle sets, and consider adding metal valve stems and a TPMS to guard against heat from under inflation. Select your ST size, load range, and quantity to see current price and availability.
Customer Feedback and Real‑World Use
Owners often praise the Radial Trail HD for steady highway tracking, predictable wet road performance, and resistance to heat on long tows. Even wear is common when pressures are maintained and loads stay within axle ratings. As with any trailer tire, results depend on inflation discipline, speed, and storage. For maximum life, run the correct load range, use the proper cold psi, rotate side to side on tandem axles when needed, and store out of direct sun.
Radial Trail HD vs. Other Trailer Tires
Compared with other established ST options, the Radial Trail HD emphasizes straight line stability, heat control, and broad size availability. Some competitors lean into longer tread warranties or added sidewall features. Your best fit depends on required load range, typical towing speed, and how many miles you log each season. If you tow at highway speeds in hot climates, prioritize heat management, proper inflation, and an M speed rating; for light duty short hauls, a lower load range may ride more comfortably.
Installation, Maintenance, and Safety
Use wheels and valve stems rated for your chosen load range and pressure. Inflate cold to the pressure required for your trailer's weight, often the tire's max cold psi for ST applications, and check before every trip. Torque lug nuts to the hub manufacturer's spec and re-torque after the first 50 to 100 miles on new installs. Keep speeds within the tire's rating, and never exceed axle or GAWR limits. Inspect sidewalls and tread for damage, replace by age or condition, and store in a cool, dry place out of UV when not in use.
Carlisle Radial Trail HD Trailer Tire
Tow with confidence on highways and back roads with the Carlisle Radial Trail HD. This ST radial is built for stable tracking, effective heat management, and durability under sustained load. A symmetric tread with a solid center rib helps the trailer run straight, and wide grooves move water for predictable braking in the rain. Reinforced construction supports heavy cargo and resists heat on long hauls. Available in popular ST sizes and multiple load ranges, it is a straightforward, dependable upgrade for boat, utility, RV, and cargo trailers.
Features and Benefits
Designed specifically for trailers, the Radial Trail HD pairs a heat resistant compound with a reinforced belt package to handle sustained loads and highway speeds. The continuous center rib enhances straight line stability and helps reduce sway, while the symmetric pattern promotes even wear and long life. Lateral grooves clear water to maintain braking confidence in wet conditions. Most sizes carry an M speed rating, 81 mph, and the lineup covers common ST fitments so you can match the load capacity your trailer needs.
Sizes, Load Ranges, and Speed Rating
The Radial Trail HD comes in core ST sizes for single and tandem axles, including ST205/75R14, ST225/75R15, and ST235/80R16. Load ranges typically span C, D, and E, with select larger sizes offered in higher capacities. Most sizes are M rated, 81 mph, when properly inflated and not overloaded. Match size, load index, and cold inflation to your trailer certification label and axle ratings, and confirm that wheels, valve stems, and suspension hardware are approved for any higher pressure you plan to run.
Popular size: ST205/75R14
A versatile pick for small to mid size trailers, the ST205/75R14 balances capacity with a compliant ride. It suits single or tandem axle utility, cargo, and boat trailers that see regular highway miles, and most versions carry an M speed rating with multiple load ranges. Verify wheel width, diameter, and maximum pressure compatibility before mounting.
Popular size: ST225/75R15 (Load Range E, 10‑ply rated)
For heavier campers and cargo trailers, the ST225/75R15 in Load Range E, 10-ply rated, adds reserve capacity and stability. Expect firm tracking and confident braking when inflated to the listed max cold psi. Confirm that your wheels and valve stems are rated for LR E pressure, and keep a matched set on each axle for even wear.
Popular size: ST235/80R16 (14‑ply rated options)
The ST235/80R16 serves larger RVs and equipment haulers that demand higher capacity and heat resistance. Select sizes are available in higher load ratings, including 14-ply rated options, to support demanding payloads. Use metal valve stems where required, torque lugs to spec, and monitor temperatures and pressures on long tows for consistent performance.
Pricing and Value
The Radial Trail HD delivers value through long tread life, stable towing manners, and broad size coverage. Pricing varies by size and load range, and many owners find the tire's durability reduces replacement frequency, lowering total cost of ownership. Look for bundle savings when buying axle sets, and consider adding metal valve stems and a TPMS to guard against heat from under inflation. Select your ST size, load range, and quantity to see current price and availability.
Customer Feedback and Real‑World Use
Owners often praise the Radial Trail HD for steady highway tracking, predictable wet road performance, and resistance to heat on long tows. Even wear is common when pressures are maintained and loads stay within axle ratings. As with any trailer tire, results depend on inflation discipline, speed, and storage. For maximum life, run the correct load range, use the proper cold psi, rotate side to side on tandem axles when needed, and store out of direct sun.
Radial Trail HD vs. Other Trailer Tires
Compared with other established ST options, the Radial Trail HD emphasizes straight line stability, heat control, and broad size availability. Some competitors lean into longer tread warranties or added sidewall features. Your best fit depends on required load range, typical towing speed, and how many miles you log each season. If you tow at highway speeds in hot climates, prioritize heat management, proper inflation, and an M speed rating; for light duty short hauls, a lower load range may ride more comfortably.
Installation, Maintenance, and Safety
Use wheels and valve stems rated for your chosen load range and pressure. Inflate cold to the pressure required for your trailer's weight, often the tire's max cold psi for ST applications, and check before every trip. Torque lug nuts to the hub manufacturer's spec and re-torque after the first 50 to 100 miles on new installs. Keep speeds within the tire's rating, and never exceed axle or GAWR limits. Inspect sidewalls and tread for damage, replace by age or condition, and store in a cool, dry place out of UV when not in use.
Do you have a question about Radial Trail HD ST225/75R15 E?
Most Carlisle Radial Trail HD sizes carry an M speed rating, up to 81 mph, when properly inflated and not overloaded. Always confirm the exact speed symbol on your tire's sidewall, as ratings can vary by size and load range. For safety and tire life, avoid sustained speeds near the limit, especially in hot weather or at maximum load. Accurate cold inflation with a quality gauge is critical to controlling heat on long highway runs.
The Radial Trail HD is offered in multiple load ranges by size, commonly C, D, and E, with some larger fitments available in higher ratings. Terms like 8-ply and 10-ply rated describe load rating, not the actual number of plies in a modern radial. Choose a load range that meets or exceeds your trailer's certification label and axle ratings, and verify your wheels and valve stems are approved for the required pressure. When in doubt, consult your trailer manufacturer or a qualified installer.
Carlisle trailer tires are produced by The Carlstar Group in global manufacturing facilities. Country of origin can vary by size and production run, and the definitive source is the sidewall marking on each tire. Save your receipt and record the DOT code for any warranty or import documentation. If you need a specific origin, contact us with the exact size and load range so we can verify current stock.
No. The Carlisle Radial Trail HD is a Special Trailer, ST, tire designed exclusively for trailer use. It is not intended for steering or drive axles on passenger vehicles or light trucks. ST tires use constructions and load characteristics tuned for trailer dynamics, straight line stability under load, reduced sway, and durability at sustained towing speeds. For your tow vehicle, choose P-metric or LT tires that match the door placard.
Start with your trailer's certification label or owner's manual, which lists the required tire size and cold inflation pressure. Many ST applications perform best at the tire's listed maximum cold psi to achieve the rated load capacity. Check pressures with a quality gauge when tires are cold, and upgrade to metal valve stems where higher pressures are specified. Never exceed the wheel's maximum pressure rating. Check pressures before each trip and again after the first 50 to 100 miles, and adjust for large temperature swings.
Yes. The Radial Trail HD is covered by a limited warranty against defects in materials and workmanship for the period set by The Carlstar Group. Terms can vary by region and typically do not include road hazard damage. Keep your proof of purchase and note the DOT codes on each tire for any future claim. Some retailers offer optional road hazard protection at checkout. For complete details, review the official warranty booklet or contact us with your size and purchase date.
