Plenty of tires wear an off-road badge and spend their lives on the interstate. The Atturo Trail Blade Boss is not one of them. It sits at the top of Atturo’s Trail Blade family as a dedicated mud-terrain, offered only in oversized 37-, 38- and 40-inch-class diameters for lifted pickups, Jeeps and SUVs that regularly leave the pavement. Atturo scores it 10.5 out of 10 for mud, sand and rock, and just 4 out of 10 for quiet ride. That gap tells you most of what you need to know.
This review covers what makes the Boss different from Atturo’s other Trail Blade tires, how far its on-road manners stretch, what the size and load figures mean for your truck, and which drivers are better off with something less extreme.
How this review was put together: We have not road-tested the Trail Blade Boss. This review is based on Atturo’s specs, its own performance ratings and warranty terms, with sources listed at the end. Checked on October 22, 2026.
At a Glance
| Category | Trail Blade Boss |
|---|---|
| Tire type | Extreme mud-terrain, light-truck construction |
| Best for | Lifted trucks, Jeeps and SUVs used regularly in mud, sand and rock |
| Available sizes | Five sizes on 17-, 18- and 20-inch wheels (two also offered with raised white letters); 36.5 to 39.5 inches tall |
| Load index / speed rating | 124Q to 136Q; 8 or 10 ply rating; 3,525 to 4,940 lb per tire |
| Tread depth | 22/32 inch in every size |
| Atturo’s ratings (1–10) | Mud 10.5, sand 10.5, rock 10.5, wet 6, snow 6, street 5, quiet 4 |
| Warranty | Atturo’s three-year manufacturer defect warranty for the original purchaser |
| Main trade-off | Road noise and everyday refinement |
Table of Contents
What the Trail Blade Boss Actually Is
The Boss is a mud-terrain tire, full stop. Atturo calls it the most aggressive off-road tire in its lineup and says the tread has been proven in some of the world’s toughest off-road races. It is not an all-terrain with a rowdy look, and it is not the hybrid design used on the Trail Blade X/T, which pairs an all-terrain center with mud-terrain shoulders.
Two clarifications save shoppers some confusion. First, a separate Trail Blade Boss SXS exists for side-by-side and UTV owners, built on an 8-ply steel-belted casing with a built-in rim guard. The tire reviewed here is the light-truck version, sold in 37-inch-plus sizes that have nothing in common with ATV or UTV fitments. Second, the Boss starts where many trucks stop: there is no 33- or 35-inch option, so drivers running those sizes will need to look at other tires in the Trail Blade range.
The brand behind it is Atturo, an Illinois company founded in 2009 and headquartered in Waukegan. It started with performance street tires, added the Trail Blade M/T, and now positions the Boss as the most aggressive tire in its truck lineup.
Tread and Sidewall Design
The Boss takes its visual theme from a knife, with blade-shaped lugs and matching handle blocks. A retailer description ties the pattern to the Quartermaster QSA-1 Boss Hog knife. Style aside, each element of the pattern has a job:
- Oversized tread blocks put a lot of rubber and a lot of biting edge on rock and hardpack. Atturo describes them as the most robust blocks in the Trail Blade family.
- A high void ratio leaves plenty of open space between lugs. On soft ground, that space is where mud and small stones go instead of packing into the tread and turning the tire into a slick.
- Split center blocks open a channel down the middle of the tread so water and debris can flow through. A reinforcing block at the base of each center lug keeps it from squirming when the tire is loaded against a ledge.
- Wave channels and sipes cut into the blocks add wet-pavement bite and take a little of the edge off road noise, according to Atturo.
- Sidewall lugs carry the tread pattern up and around the shoulder. That adds protection against gouges and gives you traction when the tire is aired down and the sidewall becomes part of the contact patch.
Retailers list light-truck versions with a full 3-ply sidewall, which adds load capacity and puncture resistance. Ply ratings run 8 or 10 depending on size, and the 22/32-inch starting tread depth is generous.
Off-Road Performance
Atturo rates the Boss at the top of its own scale for the three surfaces that define this category, and lower for everything else. Those figures are the manufacturer’s, not independent measurements, but the comparison inside Atturo’s own lineup is useful because it shows where the company itself thinks each tire belongs.
| Atturo rating (1–10) | Trail Blade Boss | Trail Blade X/T | Trail Blade A/T |
|---|---|---|---|
| Mud | 10.5 | 8 | 6 |
| Sand | 10.5 | 7 | 6 |
| Rock | 10.5 | 7 | 6 |
| Wet traction | 6 | 8 | 8 |
| Snow | 6 | 7 | 8 |
| Street performance | 5 | 7 | 8 |
| Quiet ride | 4 | 6 | 7 |
The pattern is easy to read. Every point the Boss gains in the dirt is a point it gives back on the pavement. Atturo emphasizes grip on rocks, loose dirt and mud and a tough casing; we have not found enough independent reviews to confirm how that holds up over time.
Hard rock is tough on any mud-terrain, and it is one reason the 3-ply sidewall matters for anyone who airs down and crawls.
On-Road Manners
With a street rating of 5 and a quiet-ride rating of 4, Atturo is being candid about how the Boss behaves on pavement. Big, widely spaced lugs generate hum, and a 73- to 102-pound tire adds unsprung weight that you feel in steering effort, braking distance and fuel economy. None of that is unique to the Boss. It is the price of any 37-inch-plus mud-terrain.
Still, the wave channels and siping are not window dressing. Atturo rates wet traction at 6 out of 10. Expect a louder, firmer ride than an all-terrain on long highway stretches, varying with vehicle weight, lift height and how well the tires are balanced.
Winter is a special case. Atturo rates snow performance at 6, and the Boss is not marketed with a Three-Peak Mountain Snowflake certification. Drivers who need certified winter traction from a truck tire should look at the Trail Blade A/T, which carries that certification.
Sizes, Load Ratings and Fitment
Every Boss size is a light-truck (LT) construction on a 17-, 18- or 20-inch wheel, and every one is rated Q, good for sustained speeds up to 99 mph. Load capacity climbs with the tire: the 37×12.50R17 and 38×14.50R20 carry 3,525 pounds each at 50 psi, the 37×13.50R18 carries 3,970 pounds at 65 psi, and the 40×13.50R17 tops the range at 4,940 pounds at 65 psi. The full chart, including approved rim widths and weights, appears at the end of this article.
Fitting tires this large is a project rather than a purchase. Clearance, gearing, speedometer calibration and brake performance all change when tire height jumps to 37 inches or more, so most vehicles will need a lift or trimming, and many will benefit from regearing. The load index on the replacement tire also has to meet or exceed the vehicle manufacturer’s requirement, which Atturo makes a condition of its warranty.
Warranty, Tread Life and Value
Atturo covers the Boss with its standard three-year manufacturer defect warranty. It applies to the original purchaser, requires new tires mounted on the vehicle they were first installed on, and protects against defects in materials and workmanship rather than ordinary wear. Confirm the exact terms with your dealer before you buy.
Tread life on a tire like this comes down to how you drive it. A truck that lives on pavement with occasional trail days will wear the lugs faster than a dedicated trail rig, and aggressive lugs reward regular rotation and correct pressures. Pricing is size-specific and varies by retailer, so use a size-specific quote rather than a headline figure. Because the Boss is a specialty tire in giant sizes, the bigger value question is not the sticker price but whether you will use its extreme capability often enough to justify the noise and weight.
Who Should Buy the Boss, and Who Should Look Elsewhere
A good match
- Owners of lifted trucks, Jeeps and SUVs who run 37-inch-plus tires and spend real time in mud, sand and rock.
- Drivers who air down for trail work and want a sidewall pattern that helps when it does.
- Buyers who accept road noise as the cost of maximum trail traction.
Better served by something else
- Daily commuters and highway drivers. The A/T, which Atturo rates 8 for street performance and 7 for quiet ride, is the better daily tire and adds snow certification.
- Drivers who want off-road ability without giving up comfort. The X/T hybrid trades some mud and rock traction for a quieter, more road-friendly ride.
- Owners running 33- to 35-inch tires. The Boss does not come that small. The standard Trail Blade M/T is offered in sizes such as LT35x12.50R20.
If you are comparing options across the Trail Blade range, our Atturo Trail Blade A/T and X/T reviews cover those tires in more detail.
Pros and Cons
Pros
- Top mud, sand and rock ratings in Atturo’s lineup
- Deep 22/32-inch tread with a high void ratio
- Sidewall lugs add traction and protection when aired down
- Load capacity up to 4,940 lb per tire
- Wave channels and sipes for wet-pavement grip (rated 6 out of 10)
- Three-year manufacturer defect warranty
Cons
- Quiet-ride rating of only 4 out of 10
- Heavy: 73.4 to 102 lb per tire
- Sizes start at 36.5 inches tall; nothing for 33s or 35s
- Snow rated 6 and not certified for severe snow
- Like any mud-terrain, vulnerable to chipping on sharp rock
- Fitment usually requires a lift and other changes
Frequently Asked Questions
It is a mud-terrain. Atturo describes it as its most aggressive off-road tire. The hybrid in the family is the Trail Blade X/T, and the all-terrain models are the A/T and ATS.
The tire is offered in 37×12.50R17LT, 40×13.50R17LT, 37×13.50R18LT, 38×14.50R20LT and 40×14.50R20LT, with raised-white-letter versions of the 37×12.50R17 and 37×13.50R18.
No. The Boss SXS is a separate tire for side-by-sides and UTVs. The tire reviewed here is for pickups, Jeeps and SUVs.
You can, and some owners do without complaint, but expect more noise and a firmer, heavier feel than an all-terrain gives you. Atturo’s own street and quiet-ride ratings of 5 and 4 reflect that.
Only moderately. Atturo rates its snow traction at 6 out of 10. It is not marketed with the Three-Peak Mountain Snowflake symbol, so winter-focused drivers should consider the Trail Blade A/T.
Atturo’s manufacturer warranty runs three years and covers defects in materials and workmanship for the original purchaser.
For the right truck, yes. Atturo scores the Boss 10.5 out of 10 for mud, sand and rock but just 4 out of 10 for quiet ride, so it suits lifted pickups, Jeeps and SUVs that regularly leave the pavement.
Atturo Tire Corp., an independent American company founded in 2009 and based in Waukegan, Illinois. It designs the tires in the US and has them built by contract manufacturers overseas.
No. Atturo is an American company, and its tires are built by overseas contract manufacturers; retailer specifications for the Trail Blade A/T, for example, list Thailand as the country of origin.
Final Verdict
The Trail Blade Boss is a specialist. Its oversized blocks, open tread, split center design and sidewall lugs are built for mud, sand and rock, and Atturo’s own ratings point to strong trail traction. In return, it asks for more from your truck and from you: a lift, careful fitment, tolerance for road noise, and realistic expectations about winter and long highway days.
Choose it if your vehicle already runs 37-inch-plus tires and spends weekends on real trails. Choose the X/T for a compromise, the A/T if pavement dominates your week, or the standard M/T if you need a smaller mud-terrain size. Judged as the tool it is, the Boss earns a serious look from committed off-roaders.
Appendix: Full Size and Load Chart
For reference, here is the complete Atturo Trail Blade Boss size chart.
| Size | Load / speed | Ply | Height (in) | Width (in) | Max load (lb) | Max PSI | Weight (lb) | Rim width (in) |
|---|---|---|---|---|---|---|---|---|
| 37×12.50R17LT | 124Q | 8 | 36.5 | 12.5 | 3,525 | 50 | 73.4 | 8.0–10.5 |
| 37×12.50R17LT RWL | 124Q | 8 | 36.5 | 12.5 | 3,525 | 50 | 73.4 | 8.0–10.5 |
| 40×13.50R17LT | 136Q | 10 | 39.5 | 13.6 | 4,940 | 65 | 102.0 | 9.0–11.5 |
| 37×13.50R18LT | 128Q | 10 | 36.5 | 13.6 | 3,970 | 65 | 80.5 | 9.5–12.0 |
| 37×13.50R18LT RWL | 128Q | 10 | 36.5 | 13.6 | 3,970 | 65 | 80.5 | 9.5–12.0 |
| 38×14.50R20LT | 124Q | 8 | 37.8 | 14.4 | 3,525 | 50 | 90.4 | 10.0–13.0 |
| 40×14.50R20LT | 129Q | 8 | 39.5 | 14.4 | 4,080 | 50 | 96.1 | 10.0–13.0 |
Sources
Specs, warranty terms and prices were checked on October 22, 2026. Prices change often.
- RealTruck: Atturo Trail Blade Boss M/T (sizes and listing)
- Modern Tire Dealer: Atturo unveils Trail Blade Boss (launch details)
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