2 New GREMAX Heavy Duty All Steel Radial Trailer Tires ST225/75R15

In this review the reviewer looks at the 2 New GREMAX Heavy Duty All Steel Radial Trailer Tires ST225/75R15, a 14 ply rated, load range G option aimed at heavy RVs and trailers. The bottom line: these tires are best for owners who need high load capacity and a budget-friendly replacement that matches factory-style trailer sizing. The single biggest reason to consider them is the high max load rating of 3,525 lbs per tire at 95 psi, which makes them suitable for heavier trailers that require robust load handling rather than all-season road comfort.

Key Features

• All steel construction: The full steel build is designed to provide a stiffer carcass for trailer-only use and improved load support under heavy weights.
• 14 Ply Rated, Load Range G: The high ply rating gives a maximum rated capacity that suits large RVs and commercial trailers requiring stronger tires.
• High load capacity: Each tire supports up to 3,525 lbs single or 3,195 lbs dual at 95 psi, allowing owners to match or exceed many factory trailer tire load requirements.
• Trailer-specific design: The tire is intended for trailer use only, which helps prevent issues that arise when towing tires are used on passenger vehicles.
• Deep tread: A 10/32nd tread depth provides initial tread life and good wear potential when used at the correct inflation and load levels.

Who It's For

These GREMAX ST225/75R15 tires are for trailer and RV owners who need a heavy duty replacement tire with a high load rating. Fleet operators, builders, and owners of large travel trailers or campers that match the ST225/75R15 size will appreciate the 14 ply equivalent strength and the 3,525 lb single load rating.

They are not appropriate for cars or light trucks designed for passenger tires, and buyers seeking highway passenger comfort or a quiet touring ride should look at passenger or LT alternatives. Also note that rims are not included, so buyers must have appropriate 15 in rims ready.

Pros & Cons

Pros

• High load capacity ideal for heavy trailers and large RVs.
• All steel construction provides a robust carcass built for trailer loads.
• 14 ply rating and 10/32nd tread depth give a strong starting point for load-carrying longevity.
• Budget-friendly value compared with some OEM trailer tires.

Cons

• Reported mixed durability by some customers who experienced cracking after limited miles, so long-term performance may vary.
• Designed for trailer use only, so not suitable for vehicle drive-axle applications or mixed use.

Specifications

Tire Size	ST225/75R15
Brand	GREMAX
Ply Rated	14
Max Load (single/dual)	3,525 lbs / 3,195 lbs @ 95 psi
Tread Depth	10/32nd
Load Index / Speed	124/121 M
Rim Width	6J

Our Verdict

The GREMAX 2 New ST225/75R15 14 Ply Load Range G tires are a sensible choice for heavy trailers and RVs that demand high load capacity at a reasonable price. They deliver strong rated load numbers and a trailer-focused build, making them good value for owners who prioritize load strength over passenger comfort; however, buyers should monitor long-term condition due to mixed reports on durability.

Frequently Asked Questions

Are rims included?
No, rims are not included; you must supply appropriate 15 in trailer rims.

Can these be used on a tow vehicle?
No, these tires are designed for trailer use only and are not suitable for passenger vehicle drive or steering axles.

What is the maximum load per tire?
The maximum rated load is 3,525 lbs single and 3,195 lbs dual, both at 95 psi.