Disclosure: As an Amazon Associate, we earn from qualifying purchases. If you click a link on this page and make a purchase, we may receive a small commission at no extra cost to you.
Choosing an 18×10-8 tire is not only about finding the right numbers on the sidewall. You also need enough traction for your terrain, the correct rim fit, and a load rating that matches your machine. The MOTOOS Set of 2 ATV/UTV Tires 18×10-8 combines a 4-ply tubeless casing, 12 mm tread, and non-directional split-knob pattern for mixed off-road use. It is a practical choice for compatible ATVs, UTVs, and some utility equipment, but its 240 lb load capacity per tire and off-road-only positioning mean you should check fitment and operating requirements before ordering.
Quick Verdict
Editorial Rating: 8/10, Recommended with caveats
Best For: Riders who need a reasonably simple 18×10-8 replacement pair for dirt, gravel, sand, mud, and mixed recreational trails.
Bottom Line: The deep tread, broad profile, and non-directional layout make these MOTOOS tires useful across several off-road surfaces. The main tradeoff is their 4-ply construction and 240 lb load capacity, so they are not the strongest choice for every heavy-duty or high-load setup.
| Specification | Detail |
|---|---|
| Brand | MOTOOS |
| Product Type | ATV/UTV all-terrain tire set |
| Size | 18×10-8 |
| Quantity | 2 tires |
| Construction | 4-ply rated, tubeless |
| Tire Diameter | 18 inches |
| Section Width | 10 inches |
| Rim Diameter | 8 inches |
| Listed Rim Width | 8 inches |
| Tread Depth | 12 mm / 0.47 inch |
| Tread Type | Non-directional, flat profile with split-knob design |
| Load Capacity | 240 lb per tire |
| Load Index | 28 |
| Speed Rating | F |
| Maximum Pressure | 14 PSI |
| Listed Item Weight | 30 lb |
| Included Components | 2 tires |
| Intended Use | Off-road use on compatible ATVs, UTVs, select lawn mowers, and utility vehicles |
Key Takeaways
- You get two MOTOOS 18×10-8 tubeless ATV/UTV tires in the package.
- The 4-ply rated casing is designed to resist common trail punctures and abrasions.
- A 12 mm tread depth and split-knob pattern give the tires useful bite on dirt, mud, gravel, sand, and mixed trails.
- The non-directional tread simplifies mounting because there is no required forward tread direction.
- Each tire has a listed 240 lb load capacity and F speed rating.
- The 14 PSI figure is the listed maximum pressure, not a universal operating-pressure recommendation.
- These tires are intended for off-road use and should not be treated as highway tires.
What Are the MOTOOS 18×10-8 ATV/UTV Tires?
The MOTOOS set is a pair of 18×10-8 all-terrain tires designed for 8-inch rims. Each tire measures about 18 inches in diameter and 10 inches across the section, with a tubeless 4-ply rated casing and 12 mm tread depth.
The tread uses a flat, non-directional profile with split knobs. The goal of that layout is to keep a broad area of rubber in contact with loose or uneven ground while giving dirt and debris room to move between the blocks. This makes the design more versatile than a smooth turf tire, although it is not as specialized as an extreme mud tire.
The Amazon listing identifies the included components simply as two tires. Rims are not listed as included, so you should plan to reuse compatible wheels or purchase them separately if needed.
How This Review Was Evaluated
We reviewed the current Amazon product information against the original article and checked the brand, size, construction, tread depth, load rating, pressure limit, package count, and intended applications. This is an editorial evaluation based on verified specifications and the tire’s stated design, not a claim of long-term hands-on testing.
Who Should Buy It?
Best For
- You need a pair of 18×10-8 replacements for compatible ATV or UTV wheels.
- You ride on mixed dirt, gravel, sand, muddy paths, and recreational trails.
- You prefer a tubeless, non-directional tire that does not require a directional mounting orientation.
Skip If
- Your machine does not specify an 18×10-8 tire or compatible 8-inch wheel.
- You need a higher load capacity or a heavier 6-ply construction for demanding terrain.
- You need a tire approved for regular highway use.
Before You Buy: Do not choose these tires only because your wheel diameter is 8 inches. Confirm the complete 18×10-8 size, available clearance, wheel compatibility, load requirements, and your vehicle manufacturer’s tire recommendations before mounting them.
Fit and Compatibility
The 18×10-8 size describes an approximately 18-inch overall tire diameter, a 10-inch section width, and an 8-inch wheel diameter. Amazon also lists an 8-inch rim width for this particular MOTOOS tire.
The listing says the tires can suit many ATVs and UTVs, along with select lawn mowers and utility vehicles. That does not mean every machine with an 8-inch wheel can use them. You still need sufficient fender and suspension clearance and must stay within the machine’s approved tire and load limits.
The non-directional pattern gives you some flexibility during mounting because the tread does not need to point in one specific rotation direction. Even so, both tires should be installed correctly on sound, compatible wheels by someone familiar with ATV or UTV tire mounting.
Pro Tip: Before ordering, read the size molded into your current tire instead of relying only on the vehicle model. Modified wheels, previous tire swaps, and model-year differences can change what actually fits your machine.
Tread Design and Rough-Terrain Traction
The main performance feature is the 12 mm non-directional split-knob tread. The open spaces between the blocks give loose soil, small stones, sand, and mud somewhere to move instead of turning the tread surface into one smooth contact patch.
The flat profile creates a broad footprint. On firm dirt and gravel, that design should help the tire feel planted rather than narrow and nervous. On softer ground, the individual knobs can dig into the surface to create forward and lateral traction.
You should still match expectations to the design. These are general all-terrain tires, not dedicated deep-mud paddles or specialized rock-crawling tires. If most of your riding involves one extreme surface, a more specialized tread may give you better performance.
How the 4-Ply Construction Helps
The MOTOOS tires use a 4-ply rated casing. According to the product description, this construction is intended to help resist punctures and abrasions that can occur on rough off-road surfaces.
Four-ply construction also keeps the tire positioned toward the lighter, recreational side of the ATV tire market. That can be useful when you want reasonable trail durability without automatically stepping up to a heavier casing.
The tradeoff is that buyers who repeatedly encounter sharp rocks, heavy loads, or aggressive technical terrain may prefer comparing a 6-ply alternative. Ply rating is only one part of tire performance, but it is a meaningful factor when you are deciding how much casing protection you need.
Pressure and Load Limits
Each tire has a listed 240 lb maximum load capacity, load index 28, and F speed rating. Those figures matter because a tire that physically fits your wheel can still be unsuitable if the load requirement exceeds its rating.
Amazon lists 14 PSI as the maximum pressure. That does not mean you should automatically inflate the tires to 14 PSI for every ride. Your correct operating pressure depends on the tire, machine, load, wheel, and vehicle manufacturer’s guidance.
Check pressure when the tires are cold and use an accurate low-pressure gauge. ATV tires operate at much lower pressures than normal passenger-car tires, so even a small pressure change can noticeably affect footprint, ride quality, and handling.
How It Performs in Real Use
On Dirt and Gravel Trails
The wide footprint and split-knob pattern are well suited to ordinary hard-packed dirt and loose gravel. You get multiple tread edges working across the ground, while the flat profile helps maintain a broad contact area.
On Muddy or Soft Ground
The 12 mm tread gives the tire more depth than a shallow turf-style pattern, which can help it bite into softer soil. The open block spacing can also give mud and debris room to clear. Very deep or sticky mud may still favor a more aggressive mud-specific tire.
On Sand and Mixed Terrain
The broad 10-inch section width can help distribute the tire’s contact patch over loose surfaces. For riders who move between sand, dirt, gravel, and ordinary trails during one trip, the general-purpose tread is one of this set’s stronger qualities.
On Utility Equipment
The listing also mentions select lawn mowers and utility vehicles. Here, fitment and load capacity are especially important. Confirm the complete tire size and equipment requirements rather than assuming that every utility machine with an 8-inch rim is compatible.
Installation and Setup Tips
- Verify the complete 18×10-8 size before removing your current tires.
- Inspect each rim for rust, bends, cracks, bead damage, or other defects that could prevent a tubeless seal.
- Confirm that your wheels are suitable for tubeless tires before installation.
- Do not use 14 PSI as an automatic target simply because it is the listed maximum pressure.
- Check clearance around suspension, bodywork, brakes, and nearby components after mounting.
- Follow your vehicle and tire instructions for inflation and load limits.
Tire mounting can require specialized equipment and significant force. If you do not have the correct tools or experience, professional installation is the safer option.
Maintenance and Durability
Off-road tires need regular inspection because cuts, embedded stones, sidewall damage, and pressure loss can develop between rides. Check the tread and sidewalls before heading onto a trail, particularly after riding over sharp gravel, roots, or rocky terrain.
Keep the tread blocks clear of lodged debris and watch for uneven wear. If one side begins wearing much faster than the other, inspect wheel condition, suspension, pressure, and alignment-related factors before assuming the tire itself is the cause.
For storage, keep the tires away from prolonged exposure to petroleum products, extreme heat, and other conditions that can damage rubber. If your machine sits for long periods, checking pressure before the next ride is especially important.
Pros and Cons
Pros
- 12 mm tread provides useful depth for mixed off-road surfaces.
- Non-directional split-knob pattern works across dirt, gravel, sand, mud, and trails.
- Tubeless design suits compatible tubeless wheels.
- 4-ply rated casing is designed to resist common punctures and abrasions.
- Two-tire package is convenient when you need a matching pair.
Cons
- The 240 lb load capacity per tire may be too low for some heavier applications.
- Four-ply construction may be less appealing than 6-ply options for repeated sharp-rock or severe-terrain use.
- They are intended for off-road use, not regular highway travel.
Is It Worth the Price?
The MOTOOS set sits in the practical, value-focused part of the ATV tire market. Its appeal comes from combining a two-tire package with tubeless 4-ply construction, 12 mm tread, and a versatile non-directional pattern rather than from offering the heaviest casing available.
It makes the most sense when your machine already calls for 18×10-8 tires and your riding involves ordinary trails, dirt, gravel, sand, or moderate mud. In that situation, the design gives you the main features needed for recreational all-terrain riding without paying for capabilities you may not use.
It is not the best fit if your priority is maximum casing strength or a higher load rating. In those cases, paying more for a heavier-duty alternative may give you better value over the long term.
How It Compares to Alternatives
The SunF A031 is one useful 18×10-8 alternative to compare. That model uses a 6-ply casing, so it may make more sense if you place a higher priority on casing strength and rough-terrain protection. The MOTOOS pair remains appealing when you prefer a simpler 4-ply all-terrain option with a 12 mm tread depth and 240 lb listed load capacity.
Other budget 18×10-8 tires, including models sold under brands such as TRIPOWER, use similar non-directional all-terrain layouts. When comparing them, focus on verified load capacity, ply rating, tread depth, rim requirements, and what is actually included rather than choosing only by tread appearance.
Frequently Asked Questions
Do these MOTOOS 18×10-8 tires come with wheels?
The Amazon listing identifies the included components as two tires. Wheels or rims are not listed as included, so you should plan to use compatible existing wheels or obtain them separately.
Will 18×10-8 tires fit any ATV with 8-inch wheels?
No. An 8-inch wheel diameter is only one part of fitment. Confirm the full 18×10-8 size, rim specifications, available clearance, load requirements, and your machine manufacturer’s recommendations.
Should I inflate these tires to 14 PSI?
Not automatically. The listing identifies 14 PSI as the maximum pressure. Use the correct operating pressure specified for your tire, vehicle, load, and riding conditions rather than treating the maximum as a universal target.
Are these tires directional?
No. MOTOOS lists them as non-directional tires. That means the tread does not require one specific forward rotation direction, although proper wheel mounting and fitment are still necessary.
Can I use these 18×10-8 tires on the highway?
They are listed for off-road use and are not intended for highway service. Use them only in applications that comply with the tire listing, your vehicle requirements, and applicable rules.
Do these tubeless tires require inner tubes?
The tires themselves are listed as tubeless. Your wheel must still be suitable for a tubeless setup and capable of maintaining a proper bead and air seal. Check the wheel before installation rather than assuming every 8-inch rim is tubeless-compatible.
What terrain are these tires designed for?
The listing positions them for mud, dirt, gravel, sand, and trail surfaces. Their split-knob all-terrain pattern is intended for versatility, so buyers who ride mainly in extreme mud or other specialized terrain may prefer a purpose-built tread.
How much weight can each MOTOOS tire carry?
Amazon lists a maximum load capacity of 240 lb per tire and a load index of 28. Do not choose a tire solely because it fits the rim. Make sure its load capability also meets the requirements of your vehicle and intended use.
The Bottom Line
The MOTOOS 18×10-8 tire set is worth considering if you need two compatible 4-ply tubeless all-terrain tires for ordinary ATV, UTV, or appropriate utility use. Its 12 mm tread, broad profile, and non-directional design are the main strengths, while the 240 lb load capacity and lighter 4-ply construction make it less suitable for buyers who need a tougher, higher-load setup.
If those limits fit your machine and your riding is mainly on dirt, gravel, sand, mud, and mixed trails, the set earns its recommended-with-caveats verdict.
