Maxxis’ Roxxzilla is its premier rock-crawling and off-road racing tire, and it’s the choice of 2020 and 2021–2022 King of the Hammers UTV winners Hunter Miller and Kyle Chaney, respectively. The square-footprint, all-terrain radial tire comes in two compounds—standard and “*” (sticky or race)—and in 30×10.0R14, 32×10.0R14, 35×10.0R14*, 32×100.0R15 and 35×10.0R15*. Maxxis is releasing 37-inch Maxxzillas soon. We got a chance to test the 35x10R15* race tire on a couple of KRX 1000s and the new Pro R at the SxS Adventure Rally on the Rocks (ROTR).

Not only do Roxxzillas increase turning prowess and overall traction in loose sand, the side lugs paint beautiful pictures of roost on high-horsepower machines.



Roxxzillas are 8-ply radials with a multi-layer sidewall design and an A/T semi-chevron tread and siped center lugs, and huge side lugs extend halfway down the sidewall for extra traction and flat/pinch prevention. Maxxis bills Roxxzillas as elite pure sport tires. The 35-inch Roxxzilla is rated at 741 pounds, and the 35×10.0R14 weighs 55.30 pounds and the 35×10.0R15 weighs 53.2 pounds.


Nylon radial bands strengthen the carcass, and lugs on the 32s and 35s are 19/32 of an inch tall in the center lugs and more than that on side lugs. Diameter on 35s is actually 34.5 inches, so they provide 1.9 inches more ground clearance than the 31-inch Carnivores that come on the KRX 1000. Maxxzilla 35s only come in a competition compound so far, and we’re not sure about the 37s.


The 35-inch Maxxzilla bites like a magnet on steel on Sand Hollow State Park’s rock monoliths. They grip extremely well and climb insane obstacles, and they also provide great grip when easing down steep drops. They’re also excellent in loose dune sand and desert soils. The large side lugs provide plenty of side bite in deep sand and mud ruts, improving turning in the sand on the KRX 1000 and Pro R alike.


Maxxzilla owners rate the 35-inch radial as five stars on grip/traction, handling and value, and we concur. While the 30s start at $249 each, the 35×10.0R15s are $445, but even the competition 35s provide great traction over a lot of miles. They also provide great acceleration, braking and turning traction in a wide variety of conditions on both a supercharged Kawasaki KRX 1000 and super-torquey Polaris Pro R. While Maxxis doesn’t claim a DOT rating for the Roxxzilla, it is a great hard-rock, hardpack and pavement tire. We can’t wait to experience the 37-inch Roxxzilla.


RATING: ★★★★★

PRICE: $445

See UTV Action’s guide to more new tires you need to know about here: NEW TIRES YOU NEED TO KNOW ABOUT – UTV Action Magazine

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