If you’re searching for ST175/80D13 or ST175/80R13 trailer tires with ready-to-install rims, you’ll find several strong choices here. This guide highlights five products that cover common needs: bias-ply and radial designs, white or black wheel finishes, and different load ranges. Ideal buyers include boat trailer owners needing dependable towing stability, utility trailer users seeking durable long-term performance, and travelers who value ready-to-go assemblies. The following table compares key options at a glance to help you pick quickly before diving into each product detail.
| Product | Type | Wheel Style | Load | Pattern | Best For |
|---|---|---|---|---|---|
| eCustomrim 2-Pack ST175/80D13 White Wheel Assembly | Bias Ply | 5 Lug White Spoke | Load Range C | 13 x 4.5 in | Boat and utility trailers needing a clean look and solid bias-ply stability |
| Free Country Premium ST175/80R13 | Radial | N/A | Load Range D | 8-Ply | Enhanced ruggedness for rough roads and long trips |
| GarveeTech ST175/80D13 Wheel Assembly | Bias Ply | White Spoke | Load Range C | 5 Lug 4.5″ | Utility and boat trailers needing ready-to-install assemblies |
| eCustomrim ST175/80D13 B78-13 White Spoke | Bias Ply | White Spoke | Load Range C | 13 x 4.5 in | Budget-friendly bias-ply with roadside support |
| eCustomrim ST175/80D13 Deep Tread Tires | Bias Ply | Black Spoke | Load Range C | 13 x 4.5 in | Maximized tread depth for longevity and grip |
eCustomrim 2-Pack ST175/80D13 White Wheel Assembly
This two-pack includes bias-ply trailer tires rated for 1360 lbs per tire at 50 PSI, with a 24.4″ overall diameter and Load Range C. The rim is 13×4.5″ with a 3.19″ center bore and a 5-lug pattern, designed for secure lug alignment on compatible trailers. The assembly is DOT-approved and backed by a two-year warranty with roadside assistance.
Best for: Boat trailers that want a clean white wheel and reliable bias-ply performance. Better for: Budget-conscious buyers who still want DOT-approved assemblies and roadside support. Choose this if you prefer quick-install, ready-to-use tires with a white wheel aesthetic.
Limitation: Bias-ply construction may not match the longevity of some radial options in extremely rough road conditions.
Free Country Premium ST175/80R13 Tires
This set includes two new ST175/80R13 radial tires with 8-ply construction and Load Range D. A nylon cap ply overlay covers the tread area, with a scuff-guard ring on the tire wall to protect sidewalls and rims. The radial design aims to provide improved stability and longer wear on varied road surfaces.
Best for: Trailers that encounter mixed road conditions and frequent highway travel. Better for: Those who want enhanced sidewall protection with a radial structure. Choose this if you prioritize durability and aggressive wear resistance.
Limitation: Radial tires may have a different wear pattern than bias-ply in some drift or off-road scenarios; ensure compatibility with your trailer’s axle and setup.
GarveeTech ST175/80D13 Wheel Assembly
This two-pack includes bias-ply ST175/80D13 tires mounted on white spoke wheels with 5 lug and 4.5″ pitch. The high-quality construction features nylon cord layers and double steel belts for towing stability and long-lasting performance. Ready to install, with pre-mounted tires and rims for quick trailer replacements.
Best for: Utility and boat trailers needing a sturdy, pre-mounted wheel assembly. Better for: Buyers who want a straightforward swap-in option for their trailer. Choose this if you value ready-to-install convenience and a traditional white spoke look.
Limitation: White wheels can show dirt and require more maintenance to stay pristine in muddy or saltwater environments.
eCustomrim 2-Pack ST175/80D13 B78-13 White Wheel
This two-pack features bias-ply tires with the same 1360 lbs max load, 50 PSI rating, and 24.4″ diameter. The 13×4.5″ rim uses a 3.19″ center bore and a 5-lug pattern, DOT-approved for immediate use. The price-friendly option comes with a two-year warranty and roadside assistance.
Best for: Budget-minded buyers seeking a clean white wheel look with dependable bias-ply performance. Better for: Replacing aging assemblies on light-to-medium duty trailers. Choose this if you want a dependable, low-cost upgrade without special features.
Limitation: May lack the extra tread depth or radial stability some longer-haul or rough-terrain trips require.
eCustomrim Deep Tread ST175/80D13 Tires
This pair of bias-ply trailer tires emphasizes a deep tread design for longevity. Each tire is rated for 1360 lbs at 50 PSI and pairs with a 24.4″ diameter. The set uses Load Range C and includes a two-year warranty with roadside assistance.
Best for: Trailer users who prioritize tread depth and longevity, such as frequent haulers or uneven road surfaces. Better for: Those who want improved wear life without stepping up to radial construction. Choose this if you anticipate heavy use and want practical wear resistance.
Limitation: Deep tread does not automatically translate to superior wet grip versus higher-quality radial tires in all conditions.
Buying Guide: Key Considerations for ST175/80D13 Boat Trailer Tires and Rims
- Tire construction: Bias-ply tires prioritize lower rolling resistance and simple construction, often at lower cost. Radial tires can offer better longevity and ride stability on long highway trips.
- Load range and capacity: Most options on this list use Load Range C or D. Match the max load to your trailer’s axle rating and the gross vehicle weight you carry.
- Wheel compatibility: Confirm bolt pattern (5 lug, 4.5″ PCD) and center bore when mixing tires with rims. 13×4.5″ rims are common for ST175/80D13 tires.
- Assembly readiness: DOT-approved assemblies provide a safe, ready-to-use option with tire, wheel, and valve stem included. Consider roadside assistance if your trips are long or remote.
- Wheel finish and maintenance: White wheels look classic on many boat trailers but require cleaning to resist salt and grime. Black spokes may hide dirt better in some environments.
- Tread life and use case: Deep-tread tires offer longevity in variable weather but ensure proper storage and rotation to maximize life. Radials generally last longer on highways; bias-ply can be adequate for light-use trailers.
FAQ
- What does ST175/80D13 mean? It refers to tire size: 175 mm section width, 80% aspect ratio, diagonal (D) construction, and 13-inch wheel diameter.
- Is radial or bias-ply better for boat trailers? Radial tires typically provide longer wear and better stability on highways, while bias-ply tires are often more affordable and adequate for light-duty use.
- Do these assemblies include everything I need? Most listed assemblies include tire, wheel, and valve stem and are DOT-approved. Some sets may require a separate valve stem purchase if mounting conditions differ.
- How do I choose the correct load range? Ensure the tire’s max load at the specified psi meets or exceeds your trailer’s gross axle weight rating (GAWR). If in doubt, consult your trailer manufacturer guidance.
- What maintenance helps these tires last? Regular inflation checks (as per max psi), equal loading, avoiding long periods of underinflation, and inspecting for cuts or bulges will extend life.
- Can I mix tire brands on the same trailer? It’s best to match tire size, type (bias or radial), and load rating across both axles to ensure uniform handling.