ST205/75D15 Trailer Tire Wheel Assembly - Black Mod 5-Lug

In this review the reviewer recommends the ST205/75D15 trailer tire wheel assembly for owners who need a reliable spare or replacement wheel for light trailers. The single biggest reason to buy is the combination of a deeper 7.4mm tread and a 6-ply, load range C construction that delivers longer mileage life and dependable load carrying up to 1820 lbs per tire, so it is aimed at users who tow cargo and want a durable, DOT-certified unit that fits 5 lug on 5' bolt patterns.

Key Features

• Deep tread: The 7.4mm tread depth provides longer wear life compared with many cheaper alternatives, improving mileage between replacements.
• 6-ply performance: The 6 ply rated construction and load range C give stronger sidewall support and higher load resilience for hauling trailers.
• Load and speed ratings: With a load index of 101 and speed rating L, the tire supports a max load of 1820 lbs and safe operation up to 75mph for highway towing.
• Wheel fitment: The black mod rim is a 5 lug on 5' bolt pattern with zero offset, making fitment straightforward for trailers using that common standard.
• Safety certified: Meets or exceeds applicable DOT standards so users get a compliant option for season after season of cargo hauling.

Who It's For

The assembly is best for trailer owners who need a dependable spare or replacement wheel that balances cost and durability, particularly those pulling small utility, boat, or cargo trailers that use a 5 lug on 5' pattern. It is a good option for users who value longer tread life and a 6-ply construction for heavier loads.

Those who should look elsewhere include owners of trailers with unusual bolt patterns, rims larger than 15 in, or users who need higher speed ratings or different load ranges; always compare your owners manual and measure from lug hole edge to center of opposite lug hole across 5.0' before ordering.

Pros & Cons

Pros

• Deeper 7.4mm tread gives noticeably longer wear life compared with many budget tires.
• 6 ply rated, load range C construction supports heavier loads and improves durability.
• DOT safety certification and a practical load index of 101 make it reliable for regular hauling.
• The black mod 5-lug wheel provides a clean, factory-style appearance for common trailer setups.

Cons

• Speed rating L limits use to 75mph, so it is not suitable for higher-speed applications.
• Fitment requires checking a specific 5.0' lug measurement and may be slightly taller than some stock tires for certain trailers.

Specifications

Tire Size	ST205/75D15
Brand	Free Country
Ply Rating	6 (Load Range C)
Tread Depth	7.4mm
Load Index / Max Load	101 / 1820 lbs
Speed Rating	L (up to 75mph)
Wheel Detail	5 lug on 5' bolt pattern, offset 0, Black Mod rim

Our Verdict

The ST205/75D15 assembly is a solid, value-oriented choice for trailer owners who need a durable spare or replacement that lasts longer than cheap alternatives. Its deeper tread and 6-ply construction make it well suited to routine hauling and users who prioritize safety-certified reliability, provided the 5 lug on 5' measurement matches the trailer and the L speed rating meets their needs.

Frequently Asked Questions

Will this fit my trailer?
Check your owners manual and measure from the outside edge of a lug hole to the center of the opposite lug hole across 5.0' to confirm a 5 lug on 5' bolt pattern.

What load can this tire carry?
The tire has a load index of 101 and a listed max load of 1820 lbs per tire when properly inflated.

Is this suitable for highway towing?
Yes for normal towing up to the L speed rating limit of 75mph, but not for higher-speed specialized use.