For boat trailers, B78-13 tires offer a balance of load capacity and compatibility with 13-inch rims. This guide selects five options that are well-suited for utility, boat, and camper trailers. Each product is evaluated for durability, tread design, and ease of installation. Best for different trailer types and use-cases, these picks help you choose tires that deliver steadier handling and fewer maintenance concerns on the road.
| Product | Why It Stands Out |
|---|---|
| Ecustomrim 2-Pack Tires With Rims (ST175/80D13, B78-13) | Strong load capacity, 5-lug compatibility, road-side assist |
| Free Country 2 Trailer Tires (ST175/80D13, 6PR) | Solid balance of price and reliability, good tread |
| Free Country 4 Premium Trailer Tires (ST175/80D13, 6PR) | Deeper tread for longer life, ready-to-install |
| Ecustomrim 2-Pack Deep Tread (ST175/80D13, Bias Ply) | Deeper tread for extra wear resistance |
| GarveeTech ST175/80D13 Tire & Wheel Assembly | Pre-mounted, ready to replace on utility/boat trailers |
eCustomrim 2-Pack Trailer Tires Rims ST175/80D13 B78-13
Best for: Trailer owners who want a bundled tire-and-wheel solution with roadside support. The set includes a 5-lug wheel configuration (4.5 inch bolt pattern) and a DOT-approved tire, providing a straightforward upgrade for boat or utility trailers. The included two-year warranty adds value for frequent travelers.
- Maximum Load: 1360 lbs per tire
- Maximum Pressure: 50 PSI
- Overall Diameter: 24.4 inches
- Rim Specs: 13×4.5 inches, 3.19 inch center bore
Best for: Buyers who want an all-in-one wheel-and-tire package with roadside assistance. Choose this if you prefer a convenient replacement option and a bundled warranty. Caution: verify fitment for your exact axle and wheel offset before purchase.
Free Country 2 Trailer Tires ST175/80D13
Best for: Budget-conscious buyers needing a reliable 2-tire set for spare or standard use on utility or small boat trailers. The 6PR construction and load rating up to 1360 lbs at 50 psi offer solid performance for light to moderate towing.
- Set of 2 New ST175/80D13 Bias Tires
- Brand: Free Country
- 6 ply rated, load range C
- Max Load: 1,360 lbs @ 50 psi
Limitation: Being budget-oriented, tread depth and wear performance may vary with usage. Ensure proper maintenance and rotation to maximize life.
Free Country 4 Premium Trailer Tires ST175/80D13
Best for: Trailer owners seeking longer tread life and higher mileage from daily-use boat or utility trailers. This 4-pack is designed for easier replacement and better distribution of wear across a fleet or multiple trips.
- Set of 4 Premium New ST175/80D13 Bias Tires
- Brand: Free Country Store
- 6 PR, Load Range C
- Max Load: 1360 lbs @ 50 psi
Caution: The deeper tread tends to slightly increase rolling resistance; monitor tire pressure regularly for optimal fuel and performance.
eCustomrim 2-Pack ST175/80D13 Deep Tread Trailer Tires
Best for: Buyers wanting extra wear resistance and improved wet-season traction on boat trailers. The deep-tread design targets longer life under regular towing conditions, with a two-year warranty and roadside assistance.
- 2-Pack Bias Ply Trailer Tires
- Load Range: C, Tire Weight Rating: 1360 lbs
- Overall Diameter: 24.4 Inches, Max Pressure: 50 PSI
- Deep tread design; DOT approved
Limitation: Bias ply tires can have different performance characteristics than radial tires in cornering; ensure compatibility with your trailer’s axle and suspension.
GarveeTech ST175/80D13 Tire & Wheel Assembly
Best for: Boat trailers and utility trailers that benefit from pre-mounted assemblies for quick replacement. The 5 lug, white spoke wheel is designed for straightforward swapping and immediate use after installation.
- 2-pack set
- Load Range C, 6PR
- 5 lug, 4.5″ PCD, white spoke wheel
- Pre-mounted for easy installation
Limitation: Pre-mounted assemblies require verification of wheel fitment to your trailer hub and offset to prevent rubbing or clearance issues.
Buying Guide: What to Consider When Choosing B78-13 Trailer Tires
- Tire and wheel compatibility: Check bolt pattern (5 lug, 4.5″ PCD) and rim width (4.5″).
- Load rating and pressure: Ensure the per-tire load rating meets or exceeds your trailer’s gross axle load; maintain recommended PSI for load stability.
- Wheel mounting vs. tire-only: Decide if you want a ready-to-install wheel assembly or separate tires for your existing rims.
- Tread design: Deeper tread improves wear life and wet traction; bias ply vs radial affects heat buildup and handling on longer trips.
- Warranty and roadside support: Look for a warranty and road assistance when traveling by water or coastlines.
- Durability in marine environments: Consider DOT approval and corrosion resistance features for trailer tires near saltwater.
Frequently Asked Questions
- What does B78-13 mean for boat trailers? It designates a specific tire size (175/80R13) and a load range compatible with 13-inch rims.
- Are bias ply tires okay for boat trailers? Bias ply tires offer solid wear but differ from radial tires in performance characteristics; check your trailer’s requirements.
- Should I buy single tires or a wheel assembly? Wheel assemblies simplify replacement and ensure compatibility if you don’t already own matching rims.
- What is the typical load rating for these tires? Most options here are Load Range C with a maximum load near 1360 lbs per tire, at 50 psi.
- Is a deeper tread always better? Deeper tread can improve wear life and wet traction but may affect rolling resistance and price.
- What installation considerations matter for 5-lug wheels? Verify bolt pattern, center bore, and wheel offset to avoid rubbing and ensure proper seating.