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Best Free Country Tires 2026: 14 Picks by Specs

The Free Country Prem Trailer ST225/75R15 10PR is a strong choice for heavy trailers, offering 10-ply construction and Load Range E. For ATV and UTV riders, the 25X10-12 Black Elk Mud tire provides a mud-terrain tread pattern on a 12-inch rim. This guide compares 14 Free Country tires across trailer and off-road categories, based strictly on manufacturer specifications for rim diameter, ply count, load capacity, and tread type.

14 picks from 39 tires that match this guide with a price we can quote today. The prices below are current and each carries its read time.

Quick picks

#PickTirePrice
1Best overallFree Country Prem Trailer Tires ST225/75R15 10PR LR E 117N /Scuff Guard

$176.67 price as of 2026-10-05 05:42 UTC (Details)

2Best for standard trailersFree Country ST205/75R15 Prem Trailer Tires 8PR LR D 107N w/Scuff Guard

$149.97 price as of 2026-10-05 05:42 UTC (Details)

3Best for small trailersFree Country Premium Trailer Tires ST175/80R13 8PR LRD 97N w/Scuff Guard

$114.99 price as of 2026-10-05 05:42 UTC (Details)

4Best for 16-inch wheelsFree Country Premium Trailer Tire ST235/80R16 10PR LRE 124N w/Scuff

$104.99 price as of 2026-10-05 05:42 UTC (Details)

5Best set for tandem trailersFree Country Grand Ride Set 4 Trailer Tires ST225/75R15 10 Ply Load

$335.89 price as of 2026-10-05 05:42 UTC (Details)

6Best set for 14-inch rimsFREE COUNTRY Set 4 Premium Trailer Tires ST205/75R14 8PR LRD w/Scuff

$279.98 price as of 2026-10-05 05:42 UTC (Details)

7Best mud tire for ATV/UTVFree Country UTV ATV Tires 25X10-12 6PR BLACK ELK Mud All Terrain 10612

$157.48 price as of 2026-10-05 05:42 UTC (Details)

8Best front mud tireFree Country UTV ATV Tires 25X8-12 6PR BLACK ELK Mud 25X8X12 All Terrain

$125.99 price as of 2026-10-05 05:42 UTC (Details)

9Best all-terrain setFree Country UTV ATV Tires 25X10-12 6PR SILVERBACK All Terrain 10628

$335.98 price as of 2026-10-05 05:42 UTC (Details)

10Best for side-by-sideFree Country UTV SXS Tires 30X10R14 8PR SILVERBACK All Terrain 10629

$291.99 price as of 2026-10-05 05:42 UTC (Details)

11Best sport ATV tireFree Country Sport ATV Tires 20X11-9 6PR Bengal Race All Terrain 10603

$129.99 price as of 2026-10-05 05:42 UTC (Details)

12Best mud set for 10-inch wheelsFree Country ATV Tires 22X10-10 6PR Black Elk Mud All Terrain 10608

$131.99 price as of 2026-10-05 05:42 UTC (Details)

13Best for 11-inch rimsFree Country ATV Tire Set 23X8-11 24X10-11 6PR KOMODO Mud Zest All

$316.98 price as of 2026-10-05 05:42 UTC (Details)

14Best front all-terrain tireFree Country UTV ATV Tires 25X8-12 6PR SILVERBACK All Terrain 10627

$145.99 price as of 2026-10-05 05:42 UTC (Details)

The best fit for you

  • For heavy trailer owners: If you tow a large boat, RV, or tandem-axle utility trailer, you need a tire with a high ply count and load capacity to handle the weight. See pick 1
  • For small trailer owners: For a small utility, jet ski, or snowmobile trailer, a 13-inch or 14-inch tire with 8-ply construction is often enough. See pick 3
  • For ATV mud riders: Aggressive mud-terrain treads and 12-inch rims help you get through soft ground; look for 6-ply sidewalls. See pick 7
  • For side-by-side all-terrain use: Larger 30-inch all-terrain tires provide clearance and grip for UTVs, especially when riding on mixed trails. See pick 10

Our 14 picks

1 Best overall

Free Country Prem Trailer Tires ST225/75R15 10PR LR E 117N /Scuff Guard

Free Country Prem Trailer Tires ST225/75R15 10PR LR E 117N /Scuff Guard

Vehicle
Trailer
Rim size
15 in

$176.67 price as of 2026-10-05 05:42 UTC (Details)

View on Amazon

This ST225/75R15 tire has 10-ply construction and Load Range E, the highest load capacity among the 15-inch trailer tires in this list. It fits common tandem-axle trailers and offers a scuff guard for curb protection.

Pros

  • 10-ply construction with Load Range E
  • 15-inch rim fits many trailer axles
  • Scuff guard on sidewall

Cons

  • Sold as a single tire, not a set
  • Heavier than 8-ply options, affects unsprung weight

Good fit if

  • Owners of large boats, RVs, or equipment trailers
  • Anyone who needs a high load capacity on 15-inch wheels

Skip if

  • You have a small trailer that only needs 8-ply
  • You are replacing a 14-inch tire

Verdict: A solid choice for heavy-duty towing on 15-inch wheels, with the highest ply count available in this size.

2 Best for standard trailers

Free Country ST205/75R15 Prem Trailer Tires 8PR LR D 107N w/Scuff Guard

Free Country ST205/75R15 Prem Trailer Tires 8PR LR D 107N w/Scuff Guard

Vehicle
Trailer
Rim size
15 in

$149.97 price as of 2026-10-05 05:42 UTC (Details)

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The ST205/75R15 8PR Load Range D is the most common trailer size in this list, balancing load capacity and fit for single-axle utility and small boat trailers.

Pros

  • 8-ply construction with Load Range D
  • 15-inch rim fits many trailers
  • Scuff guard included

Cons

  • Lower load capacity than 10-ply options
  • Not suited for very heavy tandem trailers

Good fit if

  • Single-axle trailers under 6,000 lb GVWR
  • Owners replacing OEM 205/75R15 tires

Skip if

  • You need Load Range E for heavier loads
  • Your trailer uses 14-inch wheels

Verdict: The everyday pick for standard trailers, offering a reliable 8-ply build at a common size.

3 Best for small trailers

Free Country Premium Trailer Tires ST175/80R13 8PR LRD 97N w/Scuff Guard

Free Country Premium Trailer Tires ST175/80R13 8PR LRD 97N w/Scuff Guard

Vehicle
Trailer
Rim size
Up to 14 in

$114.99 price as of 2026-10-05 05:42 UTC (Details)

View on Amazon

This 13-inch ST175/80R13 tire with 8PR Load Range D is the smallest in our list, designed for lightweight utility, jet ski, and tent trailers.

Pros

  • 13-inch rim for compact trailers
  • 8-ply construction for the size
  • Scuff guard protects against curb scrapes

Cons

  • Lower load capacity than larger sizes
  • Wheel diameter may be uncommon on newer trailers

Good fit if

  • Small utility or jet ski trailers
  • Tent trailers and lightweight campers

Skip if

  • Your trailer is rated for 15-inch tires
  • You carry loads over 2,000 lb per tire

Verdict: A narrow, high-ply option for small trailers that need 13-inch wheels.

4 Best for 16-inch wheels

Free Country Premium Trailer Tire ST235/80R16 10PR LRE 124N w/Scuff

Free Country Premium Trailer Tire ST235/80R16 10PR LRE 124N w/Scuff

Vehicle
Trailer
Rim size
16 in

$104.99 price as of 2026-10-05 05:42 UTC (Details)

View on Amazon

The only 16-inch trailer tire in our picks, this ST235/80R16 carries 10PR Load Range E, making it suitable for heavy-duty trailers that demand a larger rolling diameter.

Pros

  • 16-inch rim for larger trailers
  • 10-ply construction with Load Range E
  • Scuff guard included

Cons

  • Limited fitment for 15-inch trailers
  • Heavier tire affects fuel economy

Good fit if

  • Fifth-wheel and large gooseneck trailers
  • Trailers designed for 16-inch wheels

Skip if

  • Your trailer uses 15-inch rims
  • You need a tire with a higher speed index (N is 87 mph)

Verdict: A high-capacity option for trailers that use 16-inch rims and need 10-ply durability.

5 Best set for tandem trailers

Free Country Grand Ride Set 4 Trailer Tires ST225/75R15 10 Ply Load

Free Country Grand Ride Set 4 Trailer Tires ST225/75R15 10 Ply Load

Vehicle
Trailer
Rim size
15 in
Sold as
Set of 4

$335.89 price as of 2026-10-05 05:42 UTC (Details)

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This package includes four ST225/75R15 tires with 10-ply Load Range E, saving you the trouble of buying individual tires for a dual-axle trailer.

Pros

  • Set of 4 tires included
  • 10-ply construction with Load Range E
  • Steel-belted radial construction

Cons

  • Higher upfront cost than single tires
  • 15-inch size only fits certain trailers

Good fit if

  • Owners of tandem-axle trailers
  • Anyone replacing a full set of 15-inch trailer tires

Skip if

  • Your trailer uses 14-inch wheels
  • You only need to replace one tire

Verdict: Convenient full-set purchase for tandem trailers that need heavy-duty 10-ply tires.

6 Best set for 14-inch rims

FREE COUNTRY Set 4 Premium Trailer Tires ST205/75R14 8PR LRD w/Scuff

FREE COUNTRY Set 4 Premium Trailer Tires ST205/75R14 8PR LRD w/Scuff

Vehicle
Trailer
Rim size
Up to 14 in
Sold as
Set of 4

$279.98 price as of 2026-10-05 05:42 UTC (Details)

View on Amazon

This set of four ST205/75R14 tires uses 8PR Load Range D, a common size for smaller trailers with 14-inch wheels.

Pros

  • Set of 4 tires included
  • 8-ply construction with Load Range D
  • 14-inch rim fits many small trailers

Cons

  • Lower load capacity than 10-ply sets
  • Not for heavy tandem loads

Good fit if

  • Small utility trailers with 14-inch wheels
  • Boat trailers under 4,000 lb GVWR

Skip if

  • Your trailer uses 15-inch wheels
  • You need Load Range E

Verdict: A practical set for common 14-inch trailer axles, offering balanced durability.

7 Best mud tire for ATV/UTV

Free Country UTV ATV Tires 25X10-12 6PR BLACK ELK Mud All Terrain 10612

Free Country UTV ATV Tires 25X10-12 6PR BLACK ELK Mud All Terrain 10612

Vehicle
ATV and UTV
Tread
Mud Terrain

$157.48 price as of 2026-10-05 05:42 UTC (Details)

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This 25X10-12 tire features a mud-terrain tread pattern and 6-ply construction, designed to clear mud and grip soft ground on both ATVs and UTVs.

Pros

  • Mud-terrain tread for off-road traction
  • 6-ply construction improves puncture resistance
  • 12-inch rim fits many ATV/UTV models

Cons

  • Aggressive tread may wear faster on pavement
  • Narrower than some 25X8 front tires

Good fit if

  • ATVs and UTVs used on muddy trails
  • Riders who need extra grip in loose soil

Skip if

  • You only ride on hard-packed roads
  • Your vehicle uses a different rim diameter

Verdict: A dedicated mud tire for ATV/UTV riders who need maximum bite in soft conditions.

8 Best front mud tire

Free Country UTV ATV Tires 25X8-12 6PR BLACK ELK Mud 25X8X12 All Terrain

Free Country UTV ATV Tires 25X8-12 6PR BLACK ELK Mud 25X8X12 All Terrain

Vehicle
ATV and UTV
Tread
Mud Terrain

$125.99 price as of 2026-10-05 05:42 UTC (Details)

View on Amazon

The 25X8-12 is a narrower mud-terrain tire sized for the front of many ATVs and UTVs, matching the wider rear tire in our picks for a balanced look and steering response.

Pros

  • Narrow 25X8 profile for front fitment
  • 6-ply construction
  • Mud-terrain tread

Cons

  • Not suitable for rear axles that require wider tires
  • Less stable in deep mud than wider options

Good fit if

  • ATV owners replacing front tires with matching mud tread
  • UTV riders who want a complete set

Skip if

  • You need a rear tire size
  • Your vehicle uses 10-inch rims

Verdict: A proper front companion to the 25X10-12 mud tire, ensuring consistent traction.

9 Best all-terrain set

Free Country UTV ATV Tires 25X10-12 6PR SILVERBACK All Terrain 10628

Free Country UTV ATV Tires 25X10-12 6PR SILVERBACK All Terrain 10628

Vehicle
ATV and UTV
Tread
All Terrain
Sold as
Set of 4

$335.98 price as of 2026-10-05 05:42 UTC (Details)

View on Amazon

This package includes four 25X10-12 SILVERBACK tires with an all-terrain tread pattern, suitable for mixed use on dirt, gravel, and pavement.

Pros

  • Set of 4 tires included
  • All-terrain tread works on multiple surfaces
  • 6-ply construction

Cons

  • All-terrain tread trades some mud grip for on-road comfort
  • 25-inch diameter may be small for larger UTVs

Good fit if

  • ATV/UTV owners who ride a variety of trails
  • Those who want a matched set of four tires

Skip if

  • You mostly ride in deep mud
  • Your vehicle requires 14-inch rims

Verdict: A versatile set for riders who need one tire for both trail and light road use.

10 Best for side-by-side

Free Country UTV SXS Tires 30X10R14 8PR SILVERBACK All Terrain 10629

Free Country UTV SXS Tires 30X10R14 8PR SILVERBACK All Terrain 10629

Vehicle
ATV and UTV
Tread
All Terrain
Sold as
Set of 2

$291.99 price as of 2026-10-05 05:42 UTC (Details)

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This 30X10R14 tire is the largest in our picks, with a radial construction and all-terrain tread, built for side-by-side UTVs that need clearance and grip.

Pros

  • 30-inch diameter for big UTVs
  • Radial construction for smoother ride
  • All-terrain tread

Cons

  • 14-inch rim only, not for smaller ATVs
  • Large size adds weight and may affect steering

Good fit if

  • Side-by-side UTVs with 14-inch wheels
  • Riders who want a bigger rolling diameter

Skip if

  • You own a standard ATV
  • Your UTV uses 12-inch rims

Verdict: A high-radius all-terrain tire for SxS owners looking for more ground clearance.

11 Best sport ATV tire

Free Country Sport ATV Tires 20X11-9 6PR Bengal Race All Terrain 10603

Free Country Sport ATV Tires 20X11-9 6PR Bengal Race All Terrain 10603

Vehicle
ATV and UTV
Tread
All Terrain

$129.99 price as of 2026-10-05 05:42 UTC (Details)

View on Amazon

The 20X11-9 Bengal Race tire combines a low-profile 20-inch diameter with an all-terrain tread, aimed at sport ATVs that need quick response.

Pros

  • 20-inch diameter for a lower center of gravity
  • 6-ply construction
  • All-terrain tread pattern

Cons

  • 9-inch rim may be uncommon
  • Not a mud tire; limited in deep mud

Good fit if

  • Sport ATVs used for trail riding
  • Riders preferring a smaller wheel for agility

Skip if

  • You need a mud-terrain tire
  • Your ATV uses 12-inch rims

Verdict: A sport-oriented all-terrain tire for riders who value handling over maximum mud grip.

12 Best mud set for 10-inch wheels

Free Country ATV Tires 22X10-10 6PR Black Elk Mud All Terrain 10608

Free Country ATV Tires 22X10-10 6PR Black Elk Mud All Terrain 10608

Vehicle
ATV and UTV
Tread
Mud Terrain
Sold as
Set of 2

$131.99 price as of 2026-10-05 05:42 UTC (Details)

View on Amazon

This set of two 22X10-10 Black Elk Mud tires is sized for ATVs with 10-inch rims and uses a mud-terrain tread, offering a lower-cost entry into mud performance.

Pros

  • Set of 2 tires included
  • Mud-terrain tread
  • 6-ply construction

Cons

  • Only a rear pair; requires separate front tires
  • 10-inch rim limits fitment

Good fit if

  • ATV owners with 10-inch rear wheels
  • Budget-conscious mud riders

Skip if

  • You need a full set of four
  • Your ATV uses 12-inch rims

Verdict: A practical pair of mud tires for ATVs with 10-inch rims, letting you upgrade rear traction first.

13 Best for 11-inch rims

Free Country ATV Tire Set 23X8-11 24X10-11 6PR KOMODO Mud Zest All

Free Country ATV Tire Set 23X8-11 24X10-11 6PR KOMODO Mud Zest All

Vehicle
ATV and UTV
Tread
Mud Terrain

$316.98 price as of 2026-10-05 05:42 UTC (Details)

View on Amazon

This set includes both a 23X8-11 front and a 24X10-11 rear tire, a common staggered fitment for ATVs with 11-inch wheels, using KOMODO mud-terrain tread.

Pros

  • Includes front and rear tires for an 11-inch set
  • Mud-terrain tread
  • 6-ply construction

Cons

  • Not a pair of identical tires
  • 23-inch front and 24-inch rear may not fit all models

Good fit if

  • ATVs with 11-inch rims and staggered tire sizes
  • Riders who want a matched mud set

Skip if

  • Your ATV requires 12-inch wheels
  • You need a single tire

Verdict: A complete mud-tire package for common 11-inch ATV fitments.

14 Best front all-terrain tire

Free Country UTV ATV Tires 25X8-12 6PR SILVERBACK All Terrain 10627

Free Country UTV ATV Tires 25X8-12 6PR SILVERBACK All Terrain 10627

Vehicle
ATV and UTV
Tread
All Terrain

$145.99 price as of 2026-10-05 05:42 UTC (Details)

View on Amazon

The 25X8-12 SILVERBACK is an all-terrain tire sized for the front of ATVs and UTVs, offering a less aggressive tread that works well on pavement and trails.

Pros

  • All-terrain tread for mixed use
  • 6-ply construction
  • 12-inch rim, narrow 25X8 profile

Cons

  • Narrower than rear sizes
  • Not intended for deep mud

Good fit if

  • ATV/UTV owners replacing front tires with all-terrain pattern
  • Riders who want a quieter ride on hard surfaces

Skip if

  • You need a mud tire
  • Your front wheels are 10-inch

Verdict: A balanced front tire for ATV/UTVs used on a variety of terrain, with less off-road aggression than mud tires.

Specifications side by side

#TireVehicleTreadRim sizeTire sizeSold as
1Free Country Prem Trailer Tires ST225/75R15 10PR LR E 117N /Scuff GuardTrailernot stated15 innot statednot stated
2Free Country ST205/75R15 Prem Trailer Tires 8PR LR D 107N w/Scuff GuardTrailernot stated15 innot statednot stated
3Free Country Premium Trailer Tires ST175/80R13 8PR LRD 97N w/Scuff GuardTrailernot statedUp to 14 innot statednot stated
4Free Country Premium Trailer Tire ST235/80R16 10PR LRE 124N w/ScuffTrailernot stated16 innot statednot stated
5Free Country Grand Ride Set 4 Trailer Tires ST225/75R15 10 Ply LoadTrailernot stated15 innot statedSet of 4
6FREE COUNTRY Set 4 Premium Trailer Tires ST205/75R14 8PR LRD w/ScuffTrailernot statedUp to 14 innot statedSet of 4
7Free Country UTV ATV Tires 25X10-12 6PR BLACK ELK Mud All Terrain 10612ATV and UTVMud Terrainnot statednot statednot stated
8Free Country UTV ATV Tires 25X8-12 6PR BLACK ELK Mud 25X8X12 All TerrainATV and UTVMud Terrainnot statednot statednot stated
9Free Country UTV ATV Tires 25X10-12 6PR SILVERBACK All Terrain 10628ATV and UTVAll Terrainnot statednot statedSet of 4
10Free Country UTV SXS Tires 30X10R14 8PR SILVERBACK All Terrain 10629ATV and UTVAll Terrainnot statednot statedSet of 2
11Free Country Sport ATV Tires 20X11-9 6PR Bengal Race All Terrain 10603ATV and UTVAll Terrainnot statednot statednot stated
12Free Country ATV Tires 22X10-10 6PR Black Elk Mud All Terrain 10608ATV and UTVMud Terrainnot statednot statedSet of 2
13Free Country ATV Tire Set 23X8-11 24X10-11 6PR KOMODO Mud Zest AllATV and UTVMud Terrainnot statednot statednot stated
14Free Country UTV ATV Tires 25X8-12 6PR SILVERBACK All Terrain 10627ATV and UTVAll Terrainnot statednot statednot stated

How the picks were chosen

From a pool of 39 Free Country tires listed across trailer and ATV/UTV categories, we shortlisted 14 picks that cover the most common rim sizes (13, 14, 15, and 16 inches), ply counts from 4PR to 10PR, and tread compounds (mud, all-terrain, and standard trailer). We excluded near-duplicate sizes and configurations where the same tire appeared as a single or set. Prices shown on this page are live from the store listing at the time we wrote this guide and may change. Our selections are based solely on the specifications provided by the seller and the manufacturer's published data, cross-checked against applicable federal tire standards.

Picking the right one for you

Understanding ST tire load ranges and ply counts

Special Trailer (ST) tires are built specifically for trailers and must comply with FMVSS No. 119, which sets performance requirements for tires on trailers with a GVWR over 10,000 pounds (and for smaller trailers, the requirements are similar). Load range letters (B, C, D, E) correspond to ply counts; for example, Load Range D is often 8PR, while Load Range E is typically 10PR. Higher ply counts allow higher inflation pressures and carry more weight. Check your trailer's certification label to find the minimum load range and tire size required. The Federal standard 49 CFR 571.110 explains how to match tire load capacities to your vehicle's GVWR to prevent overloading.

Choosing the right rim diameter

Free Country trailer tires are offered in 13-inch, 14-inch, 15-inch, and 16-inch rim diameters. The rim diameter must match your trailer's wheel, and the tire size (e.g., ST205/75R15) includes a three-digit section width, aspect ratio, and rim diameter. Use the tire size printed on the sidewall of your current tires or the trailer's owner's manual. Larger rim diameters generally support heavier loads, but they also raise the trailer deck height. For ATVs and UTVs, rim diameters are typically 10, 11, or 12 inches, with some UTVs using 14 inches. Correct rim diameter is critical for safe seating; see the definitions in 49 CFR 571.109 for rim and tire matching requirements.

Trailer tires vs ATV/UTV tires: construction differences

Trailer tires use an ST designation and are often bias-ply, though some are radial. They are designed for straight-line highway use at moderate speeds, with stiffer sidewalls to handle heavy loads and minimize sway. ATV and UTV tires use a different sizing system (e.g., 25X10-12) and are designed for off-road traction, with flexible sidewalls and tread patterns for mud or all-terrain conditions. You should not install an ATV tire on a trailer intended for ST tires, nor use a trailer tire on an ATV that needs off-road grip. The federal standards for light truck and trailer tires, such as 49 CFR 571.139 for radial tires and 571.119 for special trailer tires, define their intended applications.

Interpreting tread patterns: mud, all-terrain, and standard

Mud-terrain (M/T) tires have large, open lugs that self-clean and dig into soft ground, but they are noisy and wear quickly on pavement. All-terrain (A/T) tires use a less aggressive pattern with more contact area, offering a balance of on-road comfort and light off-road ability. Some Free Country tires (like the Black Elk Mud and KOMODO) are clearly marked as mud-terrain, while SILVERBACK and Bengal Race are all-terrain. Trailer tires typically have a simple ribbed or block pattern for stable towing. Consider where you ride most: if it is predominantly wet or muddy conditions, choose a mud tire; if you mix trail and road, an all-terrain tire may serve better.

Checking your vehicle's load requirements

Every trailer has a GVWR (the maximum loaded weight as specified by the manufacturer) that dictates the minimum load range for its tires. The sum of the maximum load capacities of the tires on an axle must be at least equal to the axle's GAWR (the axle's weight limit), as required by 49 CFR 571.110 for vehicles under 10,000 lb and 571.120 for heavier vehicles. Your trailer's certification label lists these numbers. For ATVs and UTVs, the load capacity is usually printed on the sidewall; stay within the vehicle's specified load. The U.S. Tire Manufacturers Association (USTMA) and the Tire Industry Association (TIA) offer general guidance on tire selection and maintenance.

Questions

What does ST mean on a Free Country trailer tire?

ST stands for Special Trailer. These tires are designed specifically for trailers, not for passenger cars or trucks. They have stiffer sidewalls to handle the load and are rated for highway use on trailers. Federal regulations, such as 49 CFR 571.119, set performance requirements for ST tires used on trailers with a GVWR over 10,000 pounds; for lighter trailers, similar standards apply.

What is the difference between ply count and load range?

Ply count (e.g., 8PR, 10PR) is a historical term referring to the equivalent strength of the tire's plies. Load range is a letter designation (B, C, D, E) that corresponds to the ply count and specifies the maximum inflation pressure and load capacity. For example, Load Range D is typically 8PR, and Load Range E is 10PR. The load capacity is printed on the sidewall; always match it to your trailer's GVWR as described in 49 CFR 571.110.

How do I know which Free Country tire size fits my trailer?

Check the sidewall of your current tires. The size is printed there, for example ST205/75R15. The first letters indicate the type (ST for Special Trailer), the numbers indicate section width, aspect ratio, and rim diameter in inches. Also consult your trailer's owner's manual or the certification label for the correct size and load range. The Tire and Rim Association publishes fitment information used by manufacturers.

Can I use an ATV tire on a trailer or vice versa?

No, you should not. ATV tires are built for off-road traction and have flexible sidewalls, making them unsuitable for highway towing loads. Trailer tires (ST) have stronger sidewalls and are designed for stability and load carrying at highway speeds. Using the wrong type can lead to tire failure and unsafe conditions. Federal standards, such as 49 CFR 571.119 and 571.139, distinguish between these categories.

What is the purpose of a scuff guard on a trailer tire?

A scuff guard is a reinforced rubber band on the sidewall that helps protect the tire from damage when it rubs against curbs or other obstacles, which is common during trailer parking and maneuvering. It adds an extra layer of thickness to resist abrasion and cuts. Look for the term 'Scuff Guard' in the product description if you frequently park in tight spots.

How do I check the correct tire pressure for my Free Country tires?

The correct cold inflation pressure is specified on the trailer's certification label or in the owner's manual, not the maximum pressure printed on the tire sidewall. Proper inflation is critical: under-inflated tires can overheat and fail, while over-inflated tires reduce traction and wear unevenly. The U.S. Department of Energy's fueleconomy.gov page notes that properly inflated tires can improve gas mileage by 0.6% on average, reinforcing the importance of regular checks.

Revision notes

  • : First published.

Sources

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