ST225/75R15 Trailer Tire Wheel Assembly 6-Lug Black Mod - 10-Ply

In this review the ST225/75R15 Trailer Tire Wheel Assembly with a Black Mod rim is evaluated for trailer owners who need a robust, higher-load option. The bottom line: this assembly is best for hauling because of its 10 ply rated construction and full nylon cap ply that crosses the entire tread, a safety upgrade over many budget alternatives. The reviewer found its deeper tread and reinforced sidewall design deliver confidence under load while the 6-lug, 5.5 in bolt pattern wheel simplifies fitment on common utility and equipment trailers.

Key Features

• Full nylon cap ply: A continuous nylon overlay across the whole tread area provides improved heat resistance and adds a safety margin for heavy towing compared with tires that only reinforce the shoulders.
• Scuff Guard ring: A protective ring on the tire wall helps shield the sidewall and rim from curbing and road abrasion, extending rim and tire life.
• Deep tread depth: With 7 mm (9/32 in) tread vs competitors at about 5.6 mm, the tire offers more rubber for longer mileage and durability in trailer service.
• 10-ply, Load Range E: The 10 ply rating and Load Index 117 support heavy trailer loads and frequent hauling use up to the rated limits.
• Wheel detail: The 6 lug on 5.5 in bolt pattern with zero offset and Black Mod styling gives a widely compatible fit and a clean appearance for many trailer setups.

Who It's For

This assembly suits owners of utility, equipment, and cargo trailers who need a tougher-than-basic tire that meets higher load demands; the combination of a 10-ply rating, Load Index 117, and full nylon cap ply targets users who tow regularly or carry heavy loads. The black mod rim makes installation straightforward on common 6-lug 5.5 in bolt pattern hubs and offers an upgraded aesthetic over plain rims.

Those who should look elsewhere include owners of lightweight recreational trailers that never approach the tire's load range or buyers who require higher top speed ratings than the M (up to 81 mph) rating provides. If a specific rim finish or a different bolt pattern is needed, select a matching wheel assembly instead.

Pros & Cons

Pros

• Solid safety design thanks to the full nylon cap ply overlay across the tread.
• Deeper 7 mm tread gives better wear life and longer mileage versus many cheap rivals.
• Sturdy 10-ply, Load Range E construction with Load Index 117 for heavy trailer loads.
• 6-lug 5.5 in bolt pattern wheel in Black Mod style fits common trailer hubs and looks good.

Cons

• Speed rating M limits sustained speeds to about 81 mph, which may be lower than some highway-oriented tires.
• Some users report mixed experience filling to recommended air capacity, so check pressure requirements for your axle and load.

Specifications

Tire Size	ST225/75R15
Ply Rating	10 (Load Range E)
Load Index	117
Speed Rating	M (up to 81 mph)
Tread Depth	7 mm (9/32 in)
Wheel Bolt Pattern	6 lug on 5.5 in PCD
Wheel Style / Offset	Black Mod / offset 0

Our Verdict

The ST225/75R15 Trailer Tire Wheel Assembly is a practical choice for trailer owners who need dependable load capacity and improved safety features without complicated options. Its full nylon cap ply, deeper tread and 10-ply rating make it a sensible value for hauling equipment or cargo, and the 6-lug Black Mod wheel simplifies fitment while improving appearance.

Frequently Asked Questions

Is this tire suitable for heavy equipment trailers?
Yes, its 10-ply rating, Load Range E and Load Index 117 are intended for heavier trailer loads when inflated to the correct pressure.

What bolt pattern does the wheel use?
The wheel is 6 lug on a 5.5 in bolt pattern with zero offset to fit common trailer hubs.

Does the tire have extra sidewall protection?
Yes, the Scuff Guard ring on the tire wall is designed to protect the sidewall and rim from curb and road damage.