System 3 Offroad has expanded its popular XTR370 tire lineup with the introduction of the all-new XTR370W, a wider and more aggressive evolution of the original X-Terrain radial tire designed specifically for extreme terrain performance.
Building off the proven foundation of the standard XTR370, the new “W” variant introduces a massive 12-inch-wide tread profile that is engineered to help UTVs stay on top of ruts instead of falling into them. The wider footprint increases flotation and stability while also improving traction in deep mud, loose terrain, and technical rock sections.
The original XTR370 earned a strong reputation among UTV riders thanks to its deep tread design, multi-angle shoulder lugs, and durable radial construction. Available in sizes ranging from 27-inch to massive 40-inch applications, the standard XTR370 uses an 8-ply radial carcass combined with aggressive tread depths ranging from 0.75-inch up to 1.25-inch depending on tire size.
System 3 Offroad XTR370W
The new XTR370W takes that concept even further with an impressive 1.125-inch tread depth and updated multi-angle tread blocks featuring integrated siping. This design allows the tread lugs to flex and clamp onto terrain more effectively, increasing traction on rocks, slick surfaces, roots, and uneven terrain.
System 3 also extended the sidewall tread on the XTR370W to improve side bite and lateral grip during off-camber climbs and aggressive cornering. The larger tread footprint combined with enhanced sidewall traction should make the new tire especially appealing to riders tackling technical rock crawling terrain and deep rutted trails.
The XTR370W will be available in two different constructions depending on rider preference and terrain conditions.
The standard XTR370W uses a tough 10-ply-rated radial carcass paired with a trail-oriented compound that balances durability, puncture resistance, flotation, and ride comfort. This version is aimed at riders looking for long-lasting performance in harsh terrain.
For maximum traction, the XTR370W Sticky Compound model combines System 3’s proprietary soft rubber compound with a more flexible 8-ply-rated radial carcass. The softer compound and increased carcass flex are designed to dramatically improve grip on slick rock and technical surfaces while also increasing flotation.
The addition of the XTR370W gives System 3 a serious contender in the growing ultra-wide extreme terrain tire category while building upon the reputation and performance of the original XTR370 platform. For riders looking for increased flotation, deeper tread, and maximum traction in extreme terrain, the new XTR370W appears ready to push the XTR370 lineup to the next level.
The XTR370W will be available June 2026. For more information about the new XTR370W and the complete XTR370 tire lineup, visit System 3 Offroad.
