Trailer Tire Wheel Assembly ST175/80R13 6-Ply C 91M - Durable Fit

In this review of the Trailer Tire Wheel Assembly ST175/80R13, the bottom line is simple: this is a practical, heavy-duty wheel and tire combo best suited for owners who haul trailers regularly and want longer life from their tires. The reviewer found the standout feature to be the deeper 7mm tread depth compared to common alternatives, which translates into better mileage and longer wear before replacement. The assembly combines a 6-ply, load range C tire with a 5-lug, 4.5' bolt pattern wheel, making it a straightforward replacement that balances durability and utility for trailer use.

Key Features

• Deeper tread: The 7mm tread depth offers noticeably longer mileage and tread life than many competitors with shallower tread.
• 6-ply performance: The 6 ply rating and load range C provide reliable load carrying capacity for common trailer applications.
• Load and speed ratings: Load index 91 and speed rating M allow safe operation up to 75 mph while supporting typical trailer loads.
• Wheel compatibility: The 5 lug on 4.5' bolt pattern and zero offset make installation straightforward on trailers that use this common configuration.
• DOT safety certified: Meets or exceeds applicable DOT standards so users can trust consistent performance season after season.
• Balanced assembly: The silver mod rim paired with the tire arrives as a single assembled unit to reduce installation time and handling.

Who It's For

This wheel and tire assembly is aimed at trailer owners who need a dependable replacement that lasts longer than economy tires, including small utility trailers, boat trailers, and light cargo trailers. The combination of a 6-ply rating and 7mm tread depth makes it a good choice for users who frequently tow and want fewer tire changes over time.

Those who should look elsewhere include owners of specialized trailers that require different bolt patterns, unique rim offsets, or higher speed/load ratings than load range C and speed grade M provide. Also, buyers needing a wider rim than 4.5 in should verify fitment before purchase.

Pros & Cons

Pros

• Deeper 7mm tread delivers longer wear and improved mileage compared with typical competitors.
• 6-ply, load range C construction gives dependable load carrying capacity for common trailer needs.
• Assembled wheel and tire with a 5 lug on 4.5' bolt pattern simplifies replacement and installation.
• DOT certified for consistent safety and seasonal reliability.

Cons

• Speed rating M caps highway speeds to about 75 mph, which may be limiting for some high-speed towing scenarios.
• Rim width is 4.5 in, so buyers with nonstandard rims or wider tires should confirm fitment.

Specifications

Product	ST175/80R13 Trailer Tire Wheel Assembly
Tire size	ST175/80R13
Ply rating	6 (Load Range C)
Tread depth	7 mm
Load index / Max load	91 / 1360 lbs
Speed rating	M (up to 75 mph)
Wheel	5 lug on 4.5' PCD, offset 0, Silver Mod rim, 4.5 in rim width

Our Verdict

The ST175/80R13 wheel and tire assembly is a solid, value-focused option for typical trailer owners who prioritize durability and fewer replacements. With a deeper 7mm tread and 6-ply construction, it delivers longer life and dependable load capacity while the assembled 5-lug silver rim simplifies installation. It is good value for anyone towing at standard trailer speeds and using common 4.5' bolt pattern wheels.

Frequently Asked Questions

Will this fit my trailer hub?
The assembly uses a 5 lug on 4.5' bolt pattern and zero offset, so verify that matches your trailer hub before buying.

How much load can this tire carry?
The tire has load index 91, with a maximum load listed as 1360 lbs per tire under proper inflation and conditions.

Is this assembly road legal and safe?
Yes, it meets or exceeds applicable DOT standards for dependable on-road performance.