ST235/80R16 Trailer Tire Set of 4 - Durable 10 Ply Radial

In this review the Free Country ST235/80R16 set is examined for trailer owners who need heavy-duty, dependable tires for towing and long runs. The bottom line: this set of four tires is best for users who prioritize load capacity and sidewall protection, since the 10 ply load range E construction and a full nylon cap ply deliver higher strength than many trailer tires that only reinforce shoulder areas. The reviewer found the tires to offer a confident ride and clear value for hauling, while noting long-term durability varies by use.

Key Features

• 10 ply Load Range E: Provides a high load capacity so each tire can support up to 3,520lbs at 80 psi for heavy trailers and cargo.
• Full nylon cap ply: A nylon overlay across the entire tread area adds structural strength and improves resistance to tread separation compared with tires that only reinforce the shoulders.
• Scuff Guard sidewall: A protective ring on the tire wall reduces abrasion and damage from curbs, trailer edges, and frequent loading.
• Radial construction: Steel belted radial design helps maintain a smoother ride and consistent wear on long highway runs.
• Rim fit and dimensions: Built for a 6.5' rim width with a 30.8' overall diameter for a proper fit on standard 16' trailer wheels.

Who It's For

The set is aimed at trailer owners, small fleet operators, and anyone who pulls heavy loads and wants a robust tire with a high maximum load and reinforced tread. It is particularly appropriate for users who value sidewall protection and a stronger nylon cap ply for peace of mind on long trips.

Those who want passenger or highway car tires, lower load ratings, or a softer ride for everyday driving should look elsewhere; these tires are designed specifically for trailer use and are not a fit for passenger applications or rims outside the specified fitment.

Pros & Cons

Pros

• High load capacity and 10 ply rating make these tires suitable for heavy trailers and loaded trips.
• Full nylon cap ply across the tread improves structural integrity compared with many competitors.
• Scuff Guard ring offers extra sidewall protection against abrasion and damage.

Cons

• Designed for trailer use only, so ride comfort and handling differ from passenger tires and are not optimized for non-trailer vehicles.
• Some users report long-term separation issues after extended service, so longevity may vary by load and maintenance.

Specifications

Tire Size	ST235/80R16
Ply Rating	10
Load Range	E
Max Load (single)	3,520lbs @ 80 psi
Overall Diameter	30.8 in
Section Width	9.3 in
Tread Depth	9/32 in

Our Verdict

The Free Country ST235/80R16 set is a strong value for anyone who hauls heavy trailers and needs reinforced construction and sidewall protection. With a 10 ply, load range E rating and a full nylon cap ply, these tires deliver notable load capability and confidence on long trips, though longevity can depend on use and maintenance. For trailer duty where strength matters, they represent a sensible purchase.

Frequently Asked Questions

Are these tires suitable for towing heavy loads?
Yes. Each tire is rated to carry up to 3,520lbs at 80 psi and has a 10 ply load range E rating intended for heavy trailer loads.

Can these be used on passenger vehicles?
No. These are designed for trailer use only and are not appropriate for passenger car mounting or applications.

Do these tires include rims?
No. The listing is for four new tires only; rims are not included and must be bought separately if needed.