When your trailer relies on a B78 13ST tire, you need a model that delivers reliable load capacity, stable handling, and long tread life. We researched manufacturer specifications, reviewed industry safety standards, and analyzed aggregated owner feedback to compare the top options on the market. This guide highlights the strengths and real limitations of each tire to help you make an informed choice.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Carlisle Radial Trail HD Best Overall Load Range D, 8-ply rating, 2040 lbs at 65 psi |
9.2 | 🛒 Check Price |
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Goodyear Endurance Runner Up Load Range D, 8-ply rating, 2040 lbs at 65 psi |
8.9 | 🛒 Check Price |
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Kenda Loadstar K399 Best Value Load Range D, 8-ply rating, 2040 lbs at 65 psi |
8.4 | 🛒 Check Price |
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Taskmaster Premium ST Budget Pick Load Range C, 6-ply rating, 1760 lbs at 50 psi |
7.8 | 🛒 Check Price |
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Maxxis M8008 ST Radial Premium Choice Load Range D, 8-ply rating, 2040 lbs at 65 psi |
8.7 | 🛒 Check Price |
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Trailer King ST Radial Solid Mid-Range Load Range D, 8-ply rating, 2040 lbs at 65 psi |
8.1 | 🛒 Check Price |
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Sure-Trac ST Radial Economy Radial Load Range C, 6-ply rating, 1760 lbs at 50 psi |
7.3 | 🛒 Check Price |
1. Carlisle Radial Trail HD: Best Overall
The Carlisle Radial Trail HD is a top performer in the B78 13ST category. Its radial design reduces heat generation, which is critical for long hauls, and the reinforced sidewalls provide added puncture resistance. Owner feedback consistently highlights its stability and even wear, even when towing heavy loads near the maximum rating.
However, this tire comes at a premium compared to bias-ply alternatives. If you primarily tow short distances at lower speeds, the extra cost may not be justified. Some users also note that the tire runs slightly wider than spec, which could cause fitment issues on certain wheels. Check clearance before purchasing.
- Radial construction for reduced heat buildup and smoother towing
- Reinforced sidewalls resist cuts and impacts
- Consistent performance reported across many trailer types
Pros: Excellent durability and tread life; Smooth ride and good stability at highway speeds
Cons: Higher price point than some competitors
2. Goodyear Endurance: Runner Up
The Goodyear Endurance is a premium trailer tire built for tough conditions. Its Durawall sidewall and stone ejectors are designed to resist damage from debris and curbs, making it a favorite among RV and boat trailer owners. In our research, it consistently ranks high for durability and safety.
On the downside, the Endurance is one of the most expensive options in this size. Owners report that it can feel slightly stiffer than some competitors, which might reduce ride comfort on rough roads. If budget is a primary concern, you may find better value elsewhere.
- Durawall technology for enhanced sidewall toughness
- Stone ejectors in tread grooves protect casing
- Robust steel belts improve puncture resistance
Pros: Superior sidewall protection; Low failure rate reported in owner surveys
Cons: Premium pricing
3. Kenda Loadstar K399: Best Value
The Kenda Loadstar K399 offers strong value for budget-conscious buyers. It is a bias-ply tire that meets the load requirements for most trailers at a fraction of the cost of radial competitors. Owner reviews often mention satisfactory performance for local towing and occasional highway use.
However, bias-ply tires generate more heat and are less forgiving on long trips. We recommend this tire only for lighter loads and shorter distances. Some owners report uneven wear if not rotated regularly. If you tow heavy loads frequently, consider spending more on a radial tire.
- Bias-ply construction for affordability
- Good load capacity for the price
- Decent tread wear in light to medium use
Pros: Very affordable; Solid load rating for the cost
Cons: Bias-ply design runs hotter than radials; Shorter tread life under heavy loads
4. Taskmaster Premium ST: Budget Pick
The Taskmaster Premium ST is the most budget-friendly option we evaluated. It is a 6-ply tire rated for lighter loads, making it a reasonable choice for small utility trailers or occasional use. Owners on a tight budget appreciate the low cost and acceptable performance for short trips.
But this tire has notable limitations. Its lower load rating means it cannot handle the same weight as 8-ply competitors, and bias-ply construction leads to faster wear. We advise skipping this tire if you tow near maximum capacity or drive long distances. It is best suited for light, infrequent use.
- Lowest price in the category
- Lightweight design reduces unsprung weight
- Suitable for light-duty trailers
Pros: Extremely affordable; Easy to mount and balance
Cons: Lower load capacity and ply rating; Shorter lifespan under heavy use
5. Maxxis M8008 ST Radial: Premium Choice
The Maxxis M8008 ST Radial is a well-regarded tire known for its robust construction and reliable performance. It features steel belts and a radial design that helps keep temperatures down during long trips. Owner surveys indicate high satisfaction with tread life and stability.
The main drawback is its premium price, which is among the highest in the category. Additionally, some owners report that the tire can be difficult to find in stock. If you can afford the investment and need a tire for frequent long-distance towing, the M8008 is a solid choice. Otherwise, you may be overpaying.
- Radial construction for cooler operation
- Strong steel belts for puncture resistance
- Smooth highway ride
Pros: Excellent build quality; Good heat dissipation
Cons: Higher price than many alternatives; Limited availability at some retailers
6. Trailer King ST Radial: Solid Mid-Range
The Trailer King ST Radial is a mid-range option that brings radial benefits at a lower price point than premium brands. It offers a comfortable ride and reasonable heat management, making it a popular choice for boat and utility trailers. Many owners find it to be a good upgrade from bias-ply tires.
However, we found mixed reviews regarding tread life. Some users experienced faster wear than expected, especially under heavy loads. The sidewalls also seem less robust than those of the Carlisle or Goodyear. If you need maximum durability, you may want to invest in a higher-tier tire.
- Affordable radial option
- Good balance of price and performance
- Decent tread pattern for wet roads
Pros: Good value for a radial tire; Satisfactory highway stability
Cons: Some owners report premature wear; Sidewall durability could be better
7. Sure-Trac ST Radial: Economy Radial
The Sure-Trac ST Radial is an entry-level radial tire that offers a step up from bias-ply models without a big price jump. It is designed for lighter trailers and infrequent use. Owners appreciate the smoother ride compared to budget bias-ply tires.
However, this tire has a 6-ply rating and lower load capacity, which limits its application. Many owners report that the tread wears quickly, especially when towing near the maximum load. We recommend this tire only for very light trailers used on short trips. For heavier or longer hauls, choose an 8-ply radial.
- Low-cost radial construction
- Smooth ride for light loads
- Easy to find online
Pros: Inexpensive radial option; Better heat management than bias-ply
Cons: Lower load capacity; Shorter tread life reported by many owners
Frequently Asked Questions
What does B78 13ST mean on a trailer tire?
B78 13ST is an alphanumeric size designation. The B indicates a tire width of approximately 7.00 inches, 78 is the aspect ratio (height as a percentage of width), 13 is the rim diameter in inches, and ST stands for Special Trailer. This tire is designed exclusively for trailer use and should not be used on vehicles.
Can I use a passenger car tire instead of a B78 13ST trailer tire?
No, you should never substitute a passenger car tire for a trailer tire. ST tires have stronger sidewalls and deeper tread patterns to handle the unique stresses of towing, including higher loads and lateral forces. Using a passenger tire can lead to blowouts and unsafe towing conditions.
What is the difference between bias-ply and radial trailer tires?
Bias-ply tires have layers of fabric crisscrossed at angles, making them stiffer and more affordable but prone to heat buildup. Radial tires have layers running perpendicular to the tread, which reduces heat, improves fuel efficiency, and provides a smoother ride. For highway towing, radials are generally preferred for safety and longevity.
How do I determine the correct load range for my trailer?
Check your trailer’s Gross Vehicle Weight Rating (GVWR) and divide by the number of tires. Then select a tire with a load capacity (at recommended pressure) that meets or exceeds that number. For B78 13ST, common load ranges are C (6-ply, 1760 lbs) and D (8-ply, 2040 lbs). Always use the highest load range recommended by the trailer manufacturer.
How often should I replace B78 13ST trailer tires?
Trailer tires should be replaced every 5 to 6 years regardless of tread depth due to rubber degradation from UV exposure and heat cycling. Additionally, replace them if you see sidewall cracks, bulges, or uneven wear. Always inspect tires before each trip and replace any that show signs of damage.
Our Verdict
After comparing specifications, owner feedback, and safety standards, the Carlisle Radial Trail HD earns our top recommendation for its excellent durability, stable performance, and strong owner satisfaction. If you prefer a premium option with enhanced sidewall protection, the Goodyear Endurance is a close runner up that excels in tough conditions.
