Answer: When choosing ST175/80D13 tires and wheels for trailers, prioritize load rating, ply, tread depth, and rim compatibility to match your trailer’s needs. This guide highlights five suitable options for different buyers, from heavy-duty haulers to budget replacements, and explains who each product is best for.
| Product | Tire Type & Size | Best For | Key Feature |
|---|---|---|---|
| FREE COUNTRY 2 Premium Trailer Tires HD ST175/80D13 8PR Load Range D | ST175/80D13, 8PR, Load Range D | Heavy-duty trailers needing higher load capacity | Deeper tread for longer life |
| FREE COUNTRY 4 Premium Trailer Tires ST175/80D13 B78-13 | ST175/80D13, 6PR, Load Range C | Budget replacements with solid tread | Deeper tread for longer life |
| Kenda K550 ST175/80D13 Loadstar Trailer Tire (2 Pack) | ST175/80D13, Bias-ply | Balanced performance for all-weather towing | Advance tread design reduces sway |
| ST175/80D13 Trailer Tires and Wheels Set of 2 (13″) | ST175/80D13 on 13″ rims, 5x on 4.5″ bolt | Ready-to-install wheel-tire set | Complete set for quick replacement |
| FREE COUNTRY Five Tire Set ST175/80D13 | ST175/80D13, 6PR, Bias | Spare-focused fleets or seasonal replacements | Includes spare and four tires |
Free Country 2 Premium Trailer Tires HD ST175/80D13 8PR
Best for: trailer owners needing higher load capacity and durability. The set includes two premium heavy-duty tires, 8 ply rated, load range D, suitable for heavier trailers or frequent road use. This option emphasizes deeper tread for longer life, helping resist wear in challenging conditions. Caution: confirm your trailer’s max load and hub compatibility before installation.
Free Country 4 Premium ST175/80D13 6PR Tires
Best for: cost-conscious buyers seeking reliable replacement tires with solid tread. These 6-priority tires are load range C, offering adequate support for standard trailers. They provide good longevity with a deeper tread. Limitation: lighter duty compared to 8PR options, which may matter for very heavy loads or extended highway use.
Kenda K550 ST175/80D13 Loadstar Trailer Tire (2 Pack)
Best for: trailers needing stabilized handling and long tread life with all-weather capability. The bias-ply design helps with durability under load, and the tread is engineered to reduce sway at highway speeds. Caution: verify hub fitment and compatible wheel bore before purchase.
ST175/80D13 Trailer Tires And Wheels Set Of 2
Best for: buyers who want a quick, complete wheel-tire assembly for easy installation on many boat, utility, or lawn trailers. Includes 13″ rims with a standard 5 on 4.5″ bolt pattern. Limitation: confirm your center bore and hub compatibility to ensure proper fit.
Free Country 5-Tire ST175/80D13 Set
Best for: fleets or households needing dependable spares with a standard bias 6PR construction. The set includes four tires plus a spare, offering replacement flexibility for multiple trailers. Caution: these are trailer-specific tires; rims are not included, so ensure you have compatible rims available.
Buying Guide
What size and load rating do I need? For ST175/80D13 tires, select a load range (C or D) that matches your trailer’s axle rating and gross vehicle weight. Higher ply (like 8PR) provides better heat resistance and durability for heavy or frequent towing, while 6PR is often adequate for lighter use.
How do I pick the right wheel and bolt pattern? Confirm your trailer’s bolt pattern (commonly 5 on 4.5 inches for these tires) and the wheel’s center bore. The wheel-tire sets listed here are designed for quick installation, but hubs must be compatible. If unsure, measure or consult your trailer manufacturer specs.
Is tread depth important? Yes. Deeper tread typically yields longer life and better wet-weather grip. Some Free Country options advertise deeper tread, which can extend tire life under heavy use. Balance this with load capacity requirements.
What are tire and wheel assembly considerations? Complete sets provide faster installation and consistent performance. For fleets or frequent replacements, a multi-tire or set that includes a spare can improve readiness. Always verify hub compatibility, tire age, and mounting guidelines before installation.
What about all-season performance? Bias-ply designs like Kenda K550 provide predictable handling and robust wear across seasons, but ensure the tire is appropriate for your typical driving conditions. For highway-heavy towing, prioritize higher load ratings and deeper treads.
Key purchase considerations
- Load range and ply: D or higher for heavy-duty trailers; C or 6PR for standard use.
- Tread life: deeper tread lasts longer; consider your climate and haul distance.
- Rim compatibility: ensure correct rim size, bolt pattern, and center bore.
- Complete sets vs. individual tires: sets offer faster replacement and uniform performance.
- Spare availability: include a spare where possible to avoid downtime.
Frequently Asked Questions
- What does ST175/80D13 mean?
It describes a 175mm tire width, 80% aspect ratio, 13″ wheel diameter, bias-ply (D) construction, designed for trailers. - Is a higher ply rating always better?
Higher ply (like 8PR) offers greater load capacity and heat resistance, but check trailer axle ratings and wheel compatibility. - Can I mix tire brands on the same trailer?
It’s best to match tires by size, load rating, and tread pattern; mixing can affect handling and wear. - Do I need a new rim if I replace tires?
Not always, but verify rim width, bolt pattern, and hub bore to ensure proper mounting and safety. - How do I know if my spare tire is appropriate?
Use a spare with identical size and load rating to your primary tires for reliable performance. - Are these tires suitable for all-weather use?
Bias-ply designs can perform well in various conditions, but confirm tread depth and compound suitability for your climate and load.