All-New Outback Redefines Versatility and Value

All-New Outback Redefines Versatility and Value

STI’s new Outback is a true “all conditions” performer, delivering the comfort and control of dedicated hardpack trail rubber, while still providing the grip and cleanout capabilities of a deep, open-lugged bogger.

Outback Will Get You Out and Back

Outback Will Get You Out and Back

The STI Outback is a tire that lives up to its name — if you’re going way out and want to get back, get outfitted with Outback. Its 6-ply bias carcass and robust rim guard provides exceptional reliability while remaining surprisingly light.

Unparalleled Performance for Wide-Ranging Terrain

Unparalleled Performance for Wide-Ranging Terrain

The Outback’s tread design offers OEM-like ride on hard surfaces, while deep, dimpled lugs aggressively dig into loose, soft terrain. Wraparound shoulder lugs supply controlled side bite. The unique, stepped lug profile sheds mud like nothing else.

Diverse Sizing, Modest Pricing

Diverse Sizing, Modest Pricing

The Outback comes in two models: the AT features 3/4-in. deep lugs, and the XT model uses 1 1/8-in. deep lugs. Initial sizing is ideal for a wide range of current ATV and UTVs, with many more sizes to come. Perhaps best of all, the Outback is a do-it-all tire that doesn’t cost an arm […]


NEW Utility ATV/UTV Tires

All-New Outback

All-New Outback

It’s always something with STI Tire & Wheel. This relatively young brand is rapidly building a reputation for rapid-fire release of innovative and effective new ATV/UTV products, and the Outback tire line is no exception. The STI Outback is a true “all conditions” performer. Job one for STI’s hardworking design and production team was to […]

NEW Utility ATV/UTV Wheels

All-New HD4

All-New HD4

STI Tire & Wheel’s HD Alloy wheel line will be drawing even more attention soon with the introduction of the all-new HD4. The HD4 offers incomparable durability and a stunning new style, of course. But the headline with this rollout could be — quite literally — its sizing. The STI HD4 is available in an […]

NEW ROCTANE XS

All-New Roctane XS

All-New Roctane XS

STI Tire & Wheel has gone yet bigger and bolder with the all-new Roctane XS. This new tire is being rolled out in two industry-first sizes, making it an easy choice for the “too much is never enough” customer. The Roctane XS will be available in exclusive 29/10R15 and 30/10R17 models. You read that right […]

Sport ATV Tires

Tech 4 XC

Tech 4 XC

STI Tire & Wheel now offers a smart choice to cross-country sport quad riders and racers with the release of the all-new Tech 4 XC. The STI Tech 4 XC brings high performance to the market at a surprisingly affordable price. Tech 4 XC is specifically designed for serious trail riding and racing. It provides […]

Recent News

STI’s Newest Mud Tire – the Outback Max – Delivers Measurable Performance Gains

STI’s Newest Mud Tire – the Outback Max – Delivers Measurable Performance Gains

YORBA LINDA, Calif. (April 7, 2014) – Unveiled at the recent Mud Nationals, the new STI Outback Max tire line is a powerful expansion of the Outback tire lineup, delivering measurable performance gains over existing mud tires. The new Outback Max tires are available in three sizes: 30/10-14; 31/10-15; 32/10-17. In all three true-to-measure sizes, […]

Dirt Wheels magazine recently published a review of STI’s 26-inch Outback AT tires.

Mounted on a Can-Am Outlander ATV, these new tires were run through the Dirt Wheels torture test, and they came through with high-performance style. Highlights of the review: • On hardpack, the tires roll as smooth as the stockers and grip way better. • Cornering is precise, and the tires do not push or slide […]

Sign-Up is Open for 2014 STI Racer Support Program

Sign-Up is Open for 2014 STI Racer Support Program

STI is now welcoming racer resumes and applications for its 2014 contingency support program. This expanded program is ready to provide assistance to ATV and UTV racers around the country with several levels of support. From local competitors to championship contenders, STI is looking forward to creating winning partnerships both on and off the track. […]

STI Addresses 50-Inch Trail Width Restrictions With New HD3 Wheel Setup

STI Addresses 50-Inch Trail Width Restrictions With New HD3 Wheel Setup

Yes, size does matter. Many off-road recreation areas and land management agencies currently limit vehicle width to 50 inches or less for some trail access. This can present a problem for many popular ATV/UTV owners looking to add some style to their ride. STI has a solution with a new 14-in. HD3 “50-Inch Trail Legal” […]

All-New Roctane XS

All-New Roctane XS

STI Tire & Wheel has gone yet bigger and bolder with the all-new Roctane XS. This new tire is being rolled out in two industry-first sizes, making it an easy choice for the “too much is never enough” customer. The Roctane XS will be available in exclusive 29/10R15 and 30/10R17 models. You read that right […]

STI’s New Tech 2 MXC Shows Its Stuff

STI’s New Tech 2 MXC Shows Its Stuff

The all-new Tech 2 MXC dirt bike tire from STI Tire & Wheel has hit the ground running. Fresh off the shelf, riders using Tech 2s front and rear recently enjoyed strong success in two of the most grueling off-road motorcycle events in Southern California — and ended up on the podium after both! First, […]

All-New HD4

All-New HD4

STI Tire & Wheel’s HD Alloy wheel line will be drawing even more attention soon with the introduction of the all-new HD4. The HD4 offers incomparable durability and a stunning new style, of course. But the headline with this rollout could be — quite literally — its sizing. The STI HD4 is available in an […]

STI Breaks New Ground with the Tech 2 MXC

STI Breaks New Ground with the Tech 2 MXC

STI Tire & Wheel has double-jumped into the MX/off-road market with the release of the all-new Tech 2 MXC. The “MXC” designation reflects this tire’s adaptability to both MX and XC applications. The Tech 2 MXC has been years in the making. STI realized from the very beginning how competitive this segment is today. We […]

STI is First to Fit the New Yamaha Viking

STI is First to Fit the New Yamaha Viking

POST UPDATE: Contrary to STI’s initial testing, we have received a report that this tire/wheel combination will rub slightly on the Viking’s inner front wheel well at full steering lock. Because of this, we are now recommending the fitment of 27-inch Roctane tires for this application. If you have any questions, comments or concerns, please […]

ATV UTV Action Gives 5 Stars to Roctane and HD Beadlock

ATV UTV Action Gives 5 Stars to Roctane and HD Beadlock

Check out the August 2013 issue of ATV UTV Action Magazine, page 50. There you’ll find a “product spotlight” on STI’s Roctane XD tires and HD Beadlock wheels. The test bed was a Kawasaki Teryx4. Citing a more direct steering feel than the stock Maxxis Bighorns, an unexpectedly smooth ride and better ground clearance, the […]

Strong Words for STI’s Roctane and HD Beadlock

Strong Words for STI’s Roctane and HD Beadlock

Our pals at ATV-UTVTech.com have been spending quite a bit of time lately checking out a set of 30-inch STI Roctane XD tires fitted to HD Beadlock wheels. Their test bed is a Polaris Ranger 900 XP. The full evaluation has not been published yet, but we’ve seen a first draft and it’s clear these […]

Nic Granlund and STI Roctane Tires Win in WORCS

Nic Granlund and STI Roctane Tires Win in WORCS

It was a day of firsts for both Nic Granlund and STI Tire & Wheel. Granlund scored his first Pro SxS victory at round six of the 2013 World Off-Road Championship Series, held at Pala Raceway in Southern California. The former ATV champ topped a field of more than 50 UTVs during the six-lap race […]

STI Silverback-XLite Shows ATV World its Value and Versatility

STI Silverback-XLite Shows ATV World its Value and Versatility

ATV World Magazine, with an office located in a generally soggy central Minnesota, was all set to put STI Tire & Wheel’s Silverback-XLite tire through a muddy wringer. But there was a slight problem: no mud. Delivery of the test tires (mounted on new STI HD3 Machined/Black wheels) took place in the middle of a […]

Motocross Action Gives STI Tubes 4-Star Rating

Motocross Action Gives STI Tubes 4-Star Rating

The test riders and writers at Motocross Action Magazine have a reputation for calling it exactly as they see it. Mincing words is not part of their editorial policy. MXA’s product evaluations can make or break a company. So when the August 2013 issue slipped though the mail slot at the STI Tire & Wheel […]

Rave Reviews from Dirt Wheels for Roctane XD

Rave Reviews from Dirt Wheels for Roctane XD

In case you missed it, Dirt Wheels Magazine recently published an in-depth test on STI’s new 28×10-14 Roctane XD tires. The editors mounted the Roctanes on a set of STI HD1 Machined wheels and then bolted this setup to all four corners of a Polaris RZR XP prepared by Jagged X. After a thorough evaluation […]

STI Heads Up North for New Mud Nationals Event

STI Heads Up North for New Mud Nationals Event

Spreading the love. Mud love, that is. The High Lifter Mud Nationals recently expanded from Texas to north-central Minnesota for the inaugural Quadna Mud Nationals. Hill City and the Quadna Mountain Park set the stage for all the fun and excitement usually associated with its famed southern sibling. A tip of the helmet visor from […]

STI Grabs Traction at Rally on the Rocks

STI Grabs Traction at Rally on the Rocks

The crew at STI Tire & Wheel made another pilgrimage to Moab, Utah, for the 4th Annual Rally on the Rocks. Already one of the most popular off-road recreational gatherings on the planet, this year the primarily side-by-side UTV-oriented event enjoyed a dramatic increase in participation. The Spanish Trails Arena was again the hub of […]

STI’s Polaris RZR 50-Inch Trail Legal Wheel Solution

STI’s Polaris RZR 50-Inch Trail Legal Wheel Solution

Many off-road recreation areas and land management agencies currently limit vehicle width to 50 inches or less. This can present a problem for Polaris Ranger RZR 800 and 570 side-by-side UTV owners. Although these models meet the 50-inch-maximum trail restrictions as they come from the factory, no aftermarket wheels have been available to maintain that […]

STI Gets Personal with Optional Beadlock Wheel and Ring Colors

STI Gets Personal with Optional Beadlock Wheel and Ring Colors

STI Tire & Wheel is now providing ATV and UTV owners with an easy way to give their machines not only more security but a unique, head-turning look as well. And it’s all possible at a reasonable price compared to the competition. STI HD Beadlock wheels have been a hit since they first rolled out […]

Roctane Rules on the Short Course Too

Roctane Rules on the Short Course Too

Is there anything the STI Roctane tire can’t do? Since its introduction only a few months ago, this extreme-duty, 8-ply-rated radial has shown its stuff in everything from hard-core desert events like King of the Hammers to GNCC woods racing to deep, slippery snow. Now the Roctane is demonstrating its performance, durability and versatility in […]

Roctanes Go Wild for Winter

Roctanes Go Wild for Winter

For those of you across the U.S. who are still dealing with “the winter that never ends,” here’s a suggestion: slip on a set of STI Roctane XD tires (hopefully on a set of STI wheels) and then get out there and have some fun! Our friends at ATV-UTVTech.com have been testing a set of […]

STI Roctane XDs and Big Country Hunt Down Big Buck GNCC Win

STI Roctane XDs and Big Country Hunt Down Big Buck GNCC Win

Hunting season opened early this year in Union, South Carolina. In only the second UTV event on the 2013 Grand National Cross Country schedule, STI Roctane XD tires bagged a Big Buck. It was brought down by John Yokley and co-driver Ellen Yokley. The weapon used was a Polaris RZR, locked and loaded by Big […]

Eulberg and STI Put On a Show

Eulberg and STI Put On a Show

Our friends at UTVGuide.net were recently witness to a head-turning performance by one of STI Tire & Wheel’s sponsored drivers. It took place at an extreme rock-racing event for full-sized off-road rigs called the Nor Cal Stampede, at Prairie City SVRA in Rancho Cordova. Dave Eulberg was invited to do a UTV demonstration run, and […]

STI Has Some Dirty Good Fun at the Mud Nationals

STI Has Some Dirty Good Fun at the Mud Nationals

Has it really been ten years? Man, time flies when you’re having fun. The crew at STI is all about having fun, so we couldn’t resist the pull of another High Lifter Mud Nationals event in mid-March at the Mud Creek Off-Road Park in Jacksonville, Texas. We were joined by more than 10,000 of our […]

STI Tech 4 XCs and H&H Racing Storm the Beach

STI Tech 4 XCs and H&H Racing Storm the Beach

STI riders came out on top of a rapid ground assault at the recent World Off-Road Championship Series event at Lake Havasu City, Arizona. H&H Racing — with STI Tech 4 XC tires mounted front and back on their Honda quads — staged its blitzkrieg from a home base in Las Vegas and invaded the […]

Tanner Godfrey and STI Set World Record

Tanner Godfrey and STI Set World Record

Who doesn’t like a compelling comeback story? Tragedy to triumph. Kicking adversity in the teeth. From down and out to up and in with a buzzer-beating slam dunk. Admit it: you usually pull for the underdog. We at STI could not help but pull for Tanner Godfrey when he decided to jump his Arctic Cat […]

STI and Yamaha Team Up Once Again to Present the 2013 Quad-X Racing Series

STI and Yamaha Team Up Once Again to Present the 2013 Quad-X Racing Series

For the last decade it’s been the most important ATV motocross series in the southwest U.S. It started out under the Quadcross moniker in 2003 but now goes by the name of Yamaha Quad-X Racing Series Presented By STI. It goes off for the 2013 season this coming weekend, March 17, at Glen Helen Raceway […]

Legendary Duncan Racing Team Chooses STI Tires & Wheels

Legendary Duncan Racing Team Chooses STI Tires & Wheels

Duncan Racing has been a big part of ATV racing since before most current ATV racers were born (1977, in fact). And this team has won more races and championships than any other  — by a wide margin. That’s why, when a celebrated company like this, decides to include your product in it’s professional race […]

STI Has Your Back at 2013 Dirt Series

STI Has Your Back at 2013 Dirt Series

The Dirt Series has gained a whole lot of traction since last year. It’s back and better than ever for 2013, and this time around STI will be providing a generous contingency program to ATV and UTV competitors of all ages and skill levels. STI will also be working through Triumph Motorsports (951-898-0272) to provide […]

STI Drivers Nail King of the Hammers 2013

STI Drivers Nail King of the Hammers 2013

The King of the Hammers is, in a word, Unique (with a capital U). There are very few if any off-road races that require the use of a winch (even before getting stuck), the mutual cooperation of your competitors to help each other get around the course, or a finishing rate of just 11 percent. […]

STI in the Spotlight at 2013 Dealer Expo

STI in the Spotlight at 2013 Dealer Expo

For the powersports industry, flipping the calendar page to February means it’s time to flip open the suitcase and start packing for Indianapolis. For the 47th time, the motorcycle/ATV/UTV/watercraft business troops moved out to the Indiana Convention Center in February 2013 for the Dealernews Magazine International Powersports Dealer Expo. It’s always been the unofficial start […]

STI Stepping Up Big for 2013 WORCS Season

STI Stepping Up Big for 2013 WORCS Season

The World Off-Road Championship Series is ready to roll into the 2013 season, and STI Tire & Wheel will once again be a big part of the action. Along with being an official WORCS sponsor, STI is stoked to offer considerable support to its customers throughout the nine-round 2013 WORCS schedule. It all begins January […]

ATV-UTVTech.com Tests Black Diamond Tires on HD Beadlocks

ATV-UTVTech.com Tests Black Diamond Tires on HD Beadlocks

Our friends at ATV-UTVTech.com recently completed a comprehensive test of 27-inch STI Black Diamond tires mounted on STI HD Beadlock wheels. Here’s what they had to say:   STI Black Diamond 27” Radial Cross-Terrain Tire and HD Beadlock Wheel Review. A combination perfect for most any conditions! By Rex Ostrander of ATV-UTVTECH.COM Once in awhile […]