ST185/80R13 Trailer Tires Set of 4 - Nylon Cap Ply Protection

In this review the Free Country ST185/80R13 set of 4 trailer tires is evaluated for owners who tow frequently and need a durable, purpose-built option. The bottom line: these tires stand out for a full nylon cap ply overlay across the entire tread, which provides a clear safety and longevity advantage over many trailer tires that only have nylon on the shoulder. For those who carry heavy loads or travel long distances, the construction and reinforced sidewall protection are the single biggest reasons to consider this set.

Key Features

• Full Nylon Cap Ply: A nylon overlay crosses the entire tread area to reduce heat build-up and improve strength under sustained loads.
• 6 Ply Load Range: The 6 ply rating helps the tire carry trailer loads reliably and resist flex during towing.
• Scuff Guard Sidewall: A protective ring on the tire wall helps shield the sidewall and rim from curb scuffs and trailer chafing.
• Trailer-Specific Design: Engineered for trailer use only, the tire has construction tuned to towing demands rather than passenger car handling.
• Speed Rating N: Rated for speeds up to 88 mph, suitable for highway towing within trailer speed limits.
• One Year Limited Warranty: Backed by a distributor warranty that provides basic coverage for initial defects.

Who It's For

These tires are aimed at trailer owners who need a heavy-duty, value-minded replacement for boat trailers, utility trailers, and small campers. The full nylon cap ply makes them a good match for people planning long trips or who regularly carry heavier payloads, since customers report good load range and ride quality on extended drives.

They are not for passenger cars or mixed-use where speed and handling are critical; buyers seeking ultra-long treadlife beyond typical trailer expectations or specialized trailer tires for extreme off-road use should consider alternate, purpose-built models.

Pros & Cons

Pros

• Durable construction with full nylon cap ply gives better heat resistance and strength than shoulder-strip designs.
• Solid load capacity for a 6 ply rated trailer tire, with customers noting good load-carrying performance on long trips.
• Scuff Guard sidewall offers extra protection for rims and tire walls in tight docking and loading situations.

Cons

• Designed for trailer use only, so suitability is limited to trailers and not for passenger vehicles.
• Some users reported long-term durability issues after extended use, so long-term performance can vary by usage and maintenance.

Specifications

Tire Size	ST185/80R13
Brand	Free Country
Ply Rating	6
Load Capacity	1480 lbs @ 50 psi
Tread Depth	9/32 in
Rim Width	5 in
Speed Rating	N (up to 88 mph)

Our Verdict

The Free Country ST185/80R13 set offers strong value for trailer owners who need dependable load carrying and extra reinforcement from a full nylon cap ply. For routine towing, boat trailers and utility use this set represents a smart balance of protection and cost, though buyers expecting extended warranty-backed longevity should monitor wear over time.

Frequently Asked Questions

Are these tires suitable for highway towing?
Yes, they are rated N for speeds up to 88 mph and are designed specifically for trailer highway use.

Do rims come with the tires?
No, rims are not included; these are tire-only replacements for trailers.

What is the expected load per tire?
Each tire is rated for a maximum load of 1480 lbs at 50 psi according to the product specifications.