The right boat trailer tires can make a major difference in how confidently and reliably you tow your boat. Whether you’re making short trips to a local launch ramp or hauling your boat hundreds of miles to a fishing destination, your tires must support the trailer’s weight and handle the demands of the road.
Unfortunately, choosing replacement trailer tires isn’t always straightforward. Radial versus bias-ply construction, tire size, load range, inflation pressure, and wheel compatibility can all affect which tire is right for your setup.
In this guide, we’ll compare five of the best boat trailer tire options for 2026, including premium highway radials, budget-friendly replacements, and complete tire-and-wheel assemblies.
We’ll explain what makes each option worth considering, who should buy it, and what to check before ordering.
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Quick Picks: Best Boat Trailer Tires for 2026
| Product | Best For | Size | Load Range |
|---|---|---|---|
| Carlisle Radial Trail HD | Best Overall | ST205/75R15 | D |
| Goodyear Endurance | Best Premium Radial | ST205/75R14 | D |
| Free Country HD | Best High-Load Budget Option | ST205/75R15 | E |
| Kenda Loadstar K550 | Best Small Trailer Tire | ST175/80D13 | C |
| eCustomRim TR20012 | Best Tire-and-Wheel Package | ST175/80D13 | C |
Important: These products have different tire sizes and load ratings. Always confirm your trailer manufacturer’s requirements before buying.
1. Carlisle Radial Trail HD — Best Overall Boat Trailer Tire
The Carlisle Radial Trail HD earns our Best Overall recommendation because it delivers a practical combination of load capacity, radial construction, and an established trailer-tire brand.
For boat owners who regularly tow between home, storage facilities, and boat launches, this is an option worth considering.
The specific ST205/75R15 Load Range D configuration supports up to 2,150 pounds per tire at 65 PSI.
Key Features
- Brand: Carlisle
- Model: Radial Trail HD
- Manufacturer Part Number: 6H04591
- Tire Size: ST205/75R15
- Construction: Radial
- Load Range: D
- Maximum Load: 2,150 pounds at 65 PSI
- Speed Rating: M — 81 mph
- Wheel Included: No
Why We Like It
The Radial Trail HD is designed for trailer applications rather than passenger vehicles.
Its radial construction is well suited to regular highway towing, while the Load Range D specification provides a useful capacity for compatible trailers.
Carlisle also offers a broad selection of trailer tires, making the brand familiar to many trailer owners.
Pros
- Established trailer-tire manufacturer
- Suitable for regular highway towing
- Strong load capacity for its size
- Radial construction
- Practical replacement for compatible 15-inch trailer wheels
Cons
- Wheel is not included
- Not suitable for trailers requiring another tire size
- Mounting costs may be additional
Best For
Boat owners who need a reliable ST205/75R15 radial trailer tire for regular towing.
Our Verdict
If your trailer requires this size and load range, the Carlisle Radial Trail HD is our favorite all-around choice.
BUYING OPTIONS
2. Goodyear Endurance — Best Premium Boat Trailer Tire
The Goodyear Endurance is our premium recommendation for boat owners who frequently tow longer distances.
Designed specifically for trailer use, the Endurance combines radial construction with a strong load rating and an N speed rating.
For anglers who travel between lakes, coastal launches, or distant fishing destinations, this tire deserves consideration.
Key Features
- Brand: Goodyear
- Model: Endurance
- Manufacturer Part Number: 724864519
- Tire Size: ST205/75R14
- Construction: Radial
- Load Range: D
- Maximum Load: 2,040 pounds at 65 PSI
- Speed Rating: N — 87 mph
- Wheel Included: No
Why We Like It
The Goodyear Endurance offers a premium radial design for trailer owners who put considerable miles on their equipment.
Its N speed rating is higher than the M rating found on many trailer tires, although drivers must still follow road speed limits and trailer-manufacturer restrictions.
The Endurance is especially attractive to boat owners who want an established tire brand and frequently travel at highway speeds.
Pros
- Premium trailer-specific radial design
- N speed rating
- Strong Load Range D capacity
- Good option for frequent highway towing
- Established tire brand
Cons
- More expensive than many budget alternatives
- Wheel not included
- Must match the trailer’s required 14-inch tire size
Best For
Boat owners who frequently tow longer distances and want a premium ST205/75R14 radial tire.
Our Verdict
For compatible 14-inch trailer wheels, the Goodyear Endurance is an excellent premium option worth the additional consideration.
BUYING OPTIONS
3. Free Country HD — Best High-Load Budget Trailer Tire
Boat owners looking for higher load capacity without paying premium-brand prices may want to consider the Free Country HD radial trailer tire.
This ST205/75R15 Load Range E configuration is rated to support up to 2,400 pounds per tire at 80 PSI.
That additional capacity may be useful for appropriately rated trailers, but higher load range alone does not make a tire safer or better.
Key Features
- Brand: Free Country
- Model: HD Radial Trailer Tire
- Tire Size: ST205/75R15
- Construction: Radial
- Load Range: E
- Maximum Load: 2,400 pounds at 80 PSI
- Speed Rating: Speed Rating M (81 mph)
- Wheel Included: No
Why We Like It
The Free Country HD offers a higher load rating in a common 15-inch trailer tire size.
Its budget-oriented positioning makes it attractive for trailer owners comparing replacement costs.
For compatible trailers requiring Load Range E tires, it offers another option beyond premium tire manufacturers.
Pros
- Load Range E
- 2,400-pound maximum load rating
- Budget-oriented option
- Radial construction
- Common 15-inch trailer tire size
Cons
- Requires wheels rated for the necessary load and inflation pressure
- Wheel not included
- Higher load range does not increase the trailer’s GVWR
Best For
Owners of trailers designed for ST205/75R15 Load Range E tires who want a more affordable replacement option.
Our Verdict
The Free Country HD is worth comparing when load capacity and price are priorities, provided the exact tire specifications match your trailer.
BUYING OPTIONS
4. Kenda Loadstar K550 — Best Tire for Smaller Boat Trailers
Not every boat trailer needs larger radial tires.
For owners of smaller boats with trailers designed around 13-inch bias-ply tires, the Kenda Loadstar K550 is a practical replacement option.
The ST175/80D13 Load Range C configuration provides a maximum capacity of 1,360 pounds per tire at 50 PSI.
Key Features
- Brand: Kenda
- Model: Loadstar K550
- Tire Size: ST175/80D13
- Construction: Bias-Ply
- Load Range: C
- Maximum Load: 1,360 pounds at 50 PSI
- Speed Rating: M — 81 mph for the specified configuration
- Package Reviewed: Two tires without wheels
Why We Like It
The Kenda Loadstar K550 provides a traditional bias-ply replacement for smaller trailers.
Many small fishing boats and utility-style trailers use this general tire category, although buyers must confirm their actual size and load requirements.
The two-tire package may also be convenient for owners replacing both road tires together.
Pros
- Established specialty tire brand
- Suitable for compatible smaller trailers
- Traditional bias-ply construction
- Two-tire buying option
- Load Range C capacity
Cons
- Not designed as a substitute for larger tires
- Wheels are not included
- Bias-ply construction may be less desirable for some long-distance highway applications
- Confirm the exact two-tire package before purchasing
Best For
Smaller boat trailers that require ST175/80D13 Load Range C bias-ply tires.
Our Verdict
For compatible smaller trailers, the Kenda Loadstar K550 is a practical tire replacement choice.
BUYING OPTIONS
5. eCustomRim TR20012 — Best Complete Tire-and-Wheel Assembly
Sometimes replacing the tire alone isn’t the most convenient option.
If your boat trailer’s existing wheels are damaged, heavily corroded, or simply ready for replacement, a complete mounted assembly can simplify the process.
The eCustomRim TR20012 includes two ST175/80D13 bias-ply tires mounted on white 13-inch trailer wheels.
Key Features
- Brand: eCustomRim
- Model/Part Number: TR20012
- Tire Size: ST175/80D13
- Construction: Bias-Ply
- Load Range: C
- Maximum Load: 1,360 pounds per tire at 50 PSI
- Speed Rating: M — 81 mph
- Wheel Size: 13 inches
- Wheel Bolt Pattern: 5-on-4.5 inches
- Package: Two mounted tire-and-wheel assemblies
Why We Like It
Buying pre-mounted assemblies removes the need to have replacement tires installed on old wheels.
For boat owners dealing with rusted or worn wheels, replacing both components together can be an attractive solution.
The white spoke design is also a familiar look on smaller boat trailers.
Pros
- Tires already mounted on wheels
- Two complete assemblies
- Convenient replacement option
- Good for compatible smaller trailers
- Eliminates separate tire mounting
Cons
- Bolt pattern must match existing hubs
- Wheel size, offset, load capacity, and clearance must be checked
- Not suitable for larger trailers requiring higher-capacity tires
- Buyers should verify wheel and lug compatibility
Best For
Owners of smaller boat trailers needing complete, compatible tire-and-wheel replacement assemblies.
Our Verdict
If your trailer uses the correct 13-inch wheels and 5-on-4.5-inch bolt pattern, the eCustomRim TR20012 is a convenient all-in-one replacement choice.
BUYING OPTIONS
Radial vs. Bias-Ply Boat Trailer Tires: Which Is Better?
Understanding the difference between radial and bias-ply construction is important when shopping for replacement boat trailer tires.
Radial Boat Trailer Tires
Radial tires use carcass cords positioned approximately perpendicular to the direction of travel, combined with reinforcing belts under the tread.
They are commonly preferred for frequent highway towing.
Advantages:
- Generally well suited to longer-distance towing
- Often lower heat generation under comparable operating conditions
- Can provide stable highway performance
- Widely available in common trailer sizes
Bias-Ply Boat Trailer Tires
Bias-ply tires feature overlapping diagonal cord layers.
They are common on certain smaller and older trailer configurations.
Advantages:
- Traditional trailer-tire construction
- Often competitively priced
- Suitable for trailers designed for their dimensions and load ratings
- Available in smaller tire sizes
Which Should You Choose?
For frequent highway towing, radial tires are often the preferred choice.
However, the correct tire is determined by your trailer’s specifications—not construction alone.
Avoid mixing tire constructions on the same axle, and follow your trailer manufacturer’s requirements.
How to Choose the Right Boat Trailer Tires
1. Check Your Existing Tire Size
Your trailer’s required tire size is the starting point.
For example, ST205/75R15 means:
- ST: Special Trailer tire
- 205: Nominal tire section width in millimeters
- 75: Aspect ratio
- R: Radial construction
- 15: Wheel diameter in inches
A tire marked ST175/80D13 uses a different construction and wheel diameter.
2. Check Load Range and Weight Capacity
Your tires must have sufficient load capacity for the trailer’s rated axle requirements and loaded condition.
Check the trailer’s GVWR and GAWR along with its tire information.
Remember that your trailer’s total weight includes more than the boat itself.
The engine, fuel, batteries, fishing equipment, coolers, and trailer structure all contribute to weight.
3. Confirm Tire Pressure Requirements
Special Trailer tires have load ratings associated with specified inflation pressures.
Use the correct pressure requirements for the installed tires and trailer configuration, and check pressure when the tires are cold.
Never exceed the wheel’s pressure rating.
4. Understand Speed Ratings
The speed rating identifies a tire’s rated maximum speed under specified conditions.
However, that rating is not permission to exceed posted speed limits or trailer-manufacturer restrictions.
Proper loading, tire condition, inflation, and maintenance remain essential.
5. Consider Your Towing Distance
Boat owners who regularly tow long distances may prioritize radial tires.
Owners of small trailers used primarily for short local trips may have different priorities.
Either way, use tires compatible with your trailer’s specifications.
6. Check Tire Age
Trailer tires can age even when they still have substantial tread.
Inspect the DOT date code and follow tire-manufacturer recommendations for inspection and replacement.
When buying online, ask about manufacturing dates if the listing does not provide them.
How Long Do Boat Trailer Tires Last?
Boat trailer tire life depends on several factors:
- Age
- Storage conditions
- UV exposure
- Inflation pressure
- Towing distance
- Load weight
- Road conditions
- Maintenance
Unlike automotive tires that may be driven frequently, boat trailer tires often spend long periods sitting outdoors.
This can contribute to aging and deterioration even when tread wear is minimal.
Inspect your tires before every trip and follow the tire manufacturer’s recommended replacement guidance.
Boat Trailer Tire Maintenance Tips
Keeping boat trailer tires in good condition is one of the easiest ways to reduce the likelihood of towing problems.
Check Tire Pressure
Measure pressure when tires are cold and use the correct inflation specifications.
Inspect Sidewalls
Look for cracks, cuts, bulges, or unusual damage.
Check Tread Wear
Uneven tread wear can indicate tire, alignment, suspension, or axle problems.
Inspect Wheel Bearings
Boat trailer bearings work in demanding environments, particularly when trailers are immersed at launch ramps.
Follow the manufacturer’s maintenance recommendations.
Carry a Proper Spare Tire
A compatible spare can help keep a flat tire from ending your boating trip.
Inspect Trailer Wheels
Watch for corrosion, cracks, damaged lug holes, and other signs of deterioration.
Frequently Asked Questions
What are the best boat trailer tires for highway use?
For compatible trailers, radial tires such as the Carlisle Radial Trail HD and Goodyear Endurance are worth considering for frequent highway towing.
Are radial tires better than bias-ply tires?
Radial tires are often preferred for longer highway trips. Bias-ply tires remain suitable for trailers designed to use them.
Can I put larger tires on my boat trailer?
Not without checking compatibility. Larger tires may change overall diameter, clearance, loading characteristics, and required wheel dimensions.
Follow the trailer manufacturer’s specifications before changing tire sizes.
Should I replace both boat trailer tires at once?
Replacing both tires on the same axle is often sensible when they are similar in age, wear, and condition.
It also helps maintain consistent tire specifications.
How do I know which load range I need?
Check your trailer manufacturer’s tire recommendations and axle ratings. Select tires that meet the required specifications.
Do boat trailer tires need to be balanced?
Requirements vary by trailer, wheel, and tire manufacturer. Follow the applicable manufacturer’s guidance.
What is the difference between ST and passenger tires?
ST tires are designed for trailer service. Passenger tires are engineered for different vehicle applications and load requirements.
Use tires approved for your trailer configuration.
Final Verdict: Which Boat Trailer Tire Should You Buy?
Choosing the best boat trailer tire comes down to your trailer’s requirements, towing habits, and budget.
Here are our final recommendations.
Best Overall — Carlisle Radial Trail HD
For boat owners who need a dependable 15-inch radial trailer tire, the Carlisle Radial Trail HD offers a strong combination of load capacity and everyday towing practicality.
Best Premium — Goodyear Endurance
If you regularly tow your boat long distances and require ST205/75R14 tires, the Goodyear Endurance is our premium pick.
Best High-Load Budget Option — Free Country HD
For compatible trailers requiring Load Range E tires, Free Country provides a budget-oriented option with a higher load rating.
Best Small Trailer Tire — Kenda Loadstar K550
For smaller boat trailers requiring ST175/80D13 bias-ply tires, the Kenda Loadstar K550 is a practical choice.
Best Complete Tire-and-Wheel Assembly — eCustomRim TR20012
When you need to replace both tires and wheels, this two-pack offers a convenient option for compatible trailers.
Don’t Forget the Rest of Your Boat Trailer
Replacing your tires is only one part of keeping your boat trailer ready for the road.
A dependable winch, working trailer lights, correctly rated tie-downs, and a compatible spare tire are equally important parts of a well-maintained towing setup.
For additional recommendations, check out our Best Boat Trailer Accessories for 2026, where we cover useful equipment for towing, launching, securing, and maintaining your boat.
You can also explore our Boat & Trailer Gear Buying Guides for comparisons of boat trailer winches, winch straps, trailer jacks, and other accessories.
The Bottom Line
For compatible 15-inch radial applications, the Carlisle Radial Trail HD is our overall recommendation. For premium 14-inch radial applications, the Goodyear Endurance is another excellent option.
If you own a smaller boat trailer, the Kenda Loadstar K550 or a correctly fitted eCustomRim tire-and-wheel package may be more appropriate.
The most important decision isn’t choosing the most expensive tire. It’s choosing the correct size, load rating, construction, and wheel combination for your trailer.
With properly matched tires and routine maintenance, you’ll be better prepared for the road ahead and your next day on the water.