When your utility trailer gets a flat on a remote job site or during a long haul, a reliable spare tire is essential. We researched manufacturer specifications, industry load rating standards, and aggregated owner feedback to compare the top options. Our evaluation focuses on load capacity, tread design, durability, and ease of mounting. Here are the best spare tires for utility trailers to keep you moving.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Kenda Loadstar K399 Top Pick ST205/75R15, Load Range D, 8-ply rating |
9.1 | 🛒 Check Price |
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Carlisle Radial Trail HD Runner Up ST225/75R15, Load Range E, 10-ply rating |
8.7 | 🛒 Check Price |
 |
Taskmaster Premium ST Radial Best Value ST205/75R14, Load Range C, 6-ply rating |
8.4 | 🛒 Check Price |
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Goodyear Endurance Premium Choice ST225/75R15, Load Range E, 10-ply rating |
9.0 | 🛒 Check Price |
|
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Maxxis M8008 ST Radial Durable Performer ST205/75R15, Load Range D, 8-ply rating |
8.8 | 🛒 Check Price |
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Trailer King ST Radial Budget Pick ST205/75R14, Load Range C, 6-ply rating |
7.8 | 🛒 Check Price |
|
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SureTrail Premium ST Lightweight Option ST175/80R13, Load Range B, 4-ply rating |
7.3 | 🛒 Check Price |
1. Kenda Loadstar K399: Top Pick
The Kenda Loadstar K399 is a top choice for utility trailer owners who need a reliable spare that can handle heavy loads. In our evaluation of manufacturer specs, the Loadstar K399 meets or exceeds industry standards for load range D with an 8-ply rating, making it suitable for trailers up to about 2,500 pounds per tire. Owner feedback consistently praises its durability and resistance to punctures, even on rough terrain. The tread pattern is designed for mixed surfaces, giving you confidence on gravel or pavement.
However, this tire is not ideal for those who prioritize a smooth ride over load capacity; the stiff sidewalls can transmit road imperfections. If your trailer is lightly loaded and you mainly drive on smooth highways, a passenger tire might offer more comfort. But for heavy-duty utility work, the Kenda Loadstar K399 is a solid investment.
- High load capacity with reinforced sidewalls for heavy trailers
- Robust tread pattern provides good traction on gravel and dirt
- Consistent owner feedback reports long tread life and few flats
Pros: Excellent load handling for its size; Durable construction with 8-ply rating; Good value for the quality
Cons: Slightly stiffer ride on rough roads
2. Carlisle Radial Trail HD: Runner Up
The Carlisle Radial Trail HD is a premium spare tire option for utility trailers that frequently carry maximum loads. With a load range E and 10-ply rating, it offers one of the highest weight capacities in its class. Our research into owner feedback shows that many users appreciate the radial construction, which provides better fuel efficiency and longer tread life compared to bias-ply alternatives. The wide tread also contributes to stable towing on the highway.
That said, the Radial Trail HD comes at a higher cost, and its extra weight can be a downside if you need to handle the spare frequently. For trailers that are rarely loaded to capacity, this tire may be overkill. We recommend it for heavy-duty applications where load safety is paramount, but casual users might prefer a lighter, more affordable option.
- 10-ply rating for maximum load capacity and puncture resistance
- Radial construction for improved fuel economy and tread wear
- Wide tread footprint enhances stability at highway speeds
Pros: Very high load capacity; Radial design reduces heat buildup; Long tread life reported by owners
Cons: Heavier than bias-ply tires; Premium price point
3. Taskmaster Premium ST Radial: Best Value
The Taskmaster Premium ST Radial earns the best value badge by balancing cost and performance. According to the spec sheet, this tire offers a load range C with a 6-ply rating, suitable for many small to medium utility trailers. Owner reviews highlight its smooth ride and decent tread life for the price point. It’s a popular choice for DIYers and those who need a spare for occasional use.
However, this tire is not built for heavy loads or frequent off-road excursions. If your trailer regularly carries near its maximum capacity or you tow on rough terrain, you may need a higher ply rating. For light-duty applications like hauling yard waste or small equipment, the Taskmaster Premium ST Radial is a smart, budget-friendly choice.
- Affordable price with solid load capacity for light to medium trailers
- Radial design for smoother ride and better tread wear
- Good traction on dry pavement and hard-packed gravel
Pros: Excellent value for the price; Smooth ride for a trailer tire; Easy to mount on standard rims
Cons: Lower load range than some competitors; Not ideal for heavy off-road use
4. Goodyear Endurance: Premium Choice
The Goodyear Endurance is a premium spare tire that excels in highway towing and long-distance trips. Our evaluation of manufacturer data shows that its specialized tread compound and scalloped shoulders significantly reduce heat buildup, a common cause of trailer tire failure. Owner feedback often mentions the tire’s stability at high speeds and confidence in wet conditions. The 10-ply rating provides ample load capacity for heavy utility trailers.
On the downside, the Goodyear Endurance commands a higher price, and its size range may not fit older or smaller trailers. If you rarely tow long distances or your trailer is light, the premium features may not be necessary. But for frequent highway use and maximum safety, this tire is a top contender.
- Advanced tread compound reduces heat and wear
- Scalloped shoulder design for better water evacuation
- Industry-leading warranty and brand reputation
Pros: Excellent heat dissipation for long hauls; Superior wet traction; Strong warranty coverage
Cons: Premium price; Limited size availability for older trailers
5. Maxxis M8008 ST Radial: Durable Performer
The Maxxis M8008 ST Radial is known for its rugged construction and long-lasting performance. In our research, we found that the tire’s reinforced sidewalls and deep tread make it a favorite among owners who tow on gravel roads or construction sites. The 8-ply rating provides a good balance of load capacity and flexibility. Owner feedback consistently reports minimal wear even after several seasons of use.
However, the M8008’s stiffness can lead to a harsher ride, especially on bumpy roads. It also weighs more than some comparable tires, which could slightly impact fuel economy. If you prioritize a smooth ride over extreme durability, you might consider a different option. But for heavy-duty use, the Maxxis M8008 is a reliable choice.
- Reinforced sidewalls resist cuts and abrasions
- Deep tread pattern for long wear life
- Popular among boat and utility trailer owners
Pros: Exceptional durability; Good traction on loose surfaces; Long tread life
Cons: Stiffer ride than some radial alternatives; Heavier tire may affect fuel economy
6. Trailer King ST Radial: Budget Pick
The Trailer King ST Radial is a budget-friendly spare tire for utility trailers that see light use. According to the spec sheet, it has a load range C with a 6-ply rating, suitable for small trailers carrying moderate loads. Owner reviews indicate that it gets the job done for occasional trips to the dump or moving light equipment. Its low price makes it an attractive option for those on a tight budget.
However, this tire is not built for heavy loads or high-speed towing. Owners report faster tread wear and a higher risk of punctures compared to more expensive options. If you frequently tow near your trailer’s capacity or drive on the highway, we recommend investing in a higher-rated tire. The Trailer King is best as a temporary spare or for very light-duty applications.
- Lowest cost option for budget-conscious buyers
- Adequate for light loads and occasional use
- Simple bias-ply design for easy mounting
Pros: Very affordable; Lightweight and easy to handle; Works well for small trailers
Cons: Lower durability and shorter tread life; Not recommended for highway speeds
7. SureTrail Premium ST: Lightweight Option
The SureTrail Premium ST is a lightweight spare tire designed for small utility trailers and light loads. With a load range B and 4-ply rating, it is best suited for trailers carrying less than 1,000 pounds per tire. Owner feedback suggests it works fine for lawn care trailers or small DIY projects. Its low weight makes it easy to lift and store.
However, this tire is not suitable for heavy-duty use or off-road conditions. The thin sidewalls are prone to damage from curbs or rocks, and the tread wears quickly under load. If your trailer regularly carries heavy equipment or you tow on rough roads, skip this option. The SureTrail is only recommended for the lightest applications where cost and weight are primary concerns.
- Lightweight design for easy handling and storage
- Low rolling resistance for better fuel economy
- Fits small utility trailers and ATV trailers
Pros: Very easy to mount and store; Good for light loads; Inexpensive
Cons: Low load capacity limits use; Not durable for rough terrain
Frequently Asked Questions
What size spare tire do I need for my utility trailer?
Check the sidewall of your existing tires for a code like ST205/75R15. The first number (205) is width in millimeters, the second (75) is aspect ratio, and the last (15) is rim diameter. Match these numbers exactly for proper fitment. Also verify load range and ply rating to ensure the spare can handle your trailer’s weight.
Can I use a car tire as a spare for my utility trailer?
It is not recommended. Trailer tires (ST) are designed with stronger sidewalls and higher load capacities than passenger tires (P). Using a car tire can lead to blowouts, especially under heavy loads or at highway speeds. Always use a tire specifically rated for trailer use.
What load range should I choose for a spare tire?
Load range indicates the tire’s maximum load capacity. For a utility trailer, choose at least load range C (6-ply) for light loads, D (8-ply) for medium loads, and E (10-ply) for heavy loads. Match or exceed the load range of your other tires to ensure safety.
How often should I replace my spare trailer tire?
Even if unused, spare tires degrade over time due to UV exposure and temperature changes. Replace a spare tire every 5 to 7 years, or sooner if you see cracks, bulges, or dry rot. Check the date code on the sidewall (DOT code) to determine age.
Can I mount a spare tire on a different rim size?
No, the rim diameter must match exactly (e.g., 14-inch tire on a 14-inch rim). Width can vary slightly, but using a mismatched rim can cause improper bead seating and safety hazards. Always use the correct rim size specified for the tire.
Our Verdict
After researching manufacturer specs, industry standards, and owner feedback, our top pick is the Kenda Loadstar K399 for its excellent load capacity, durability, and value. If you need maximum load handling and are willing to spend more, the Carlisle Radial Trail HD is a strong runner up. Choose based on your trailer’s weight and typical road conditions.
