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STI ATV Tires from Rocky Mountain ATV/MC

STI is dedicated to the design, development and manufacturing of high quality ATV and UTV tires. Their engineers are committed to developing tires that meet the highest standards and provide the greatest value to their customers. Rocky Mountain ATV/MC has many kinds of STI ATV tires, made for sand, snow, mud, tracks and trails. You can be sure any tire that Rocky Mountain ATV/MC sells is durable and built to last, but we always make sure we have great prices as well.

If you need two STI ATV tires, make sure you check out our ATV Tire and Wheel Builder Package which can save you up to 56%. Simply choose two tires and wheels using our filters search that will find the tires to fit your machine perfectly. Then our trained professionals will mount them for free and get them ready to be shipped along with the free valve stems you receive with your package. In addition, you also receive free ground shipping with any ATV Tire and Wheel Package.

Latest STI ATV Tires Reviews – You could win up to $500 for reviewing products!

  • STI Tech 4 XC ATV Tire

    STI Tech 4 XC ATV Tire

    michael in OH

    grat tire

    They are holding up great so far. With so many choices out thier i was hoping that i was making the right one and i am glad i got theses i love the tread.

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  • STI Tech 4 MX ATV Tire

    STI Tech 4 MX ATV Tire

    Joel in Manitoba

    Front good rear bad

    I bought these a while ago after one year of recreational mx track riding. NOT racing. They started cracking around the tread lugs. After not riding for a year I spend money to go ride at a track and now my rear is leaking through a big crack in the lug I could probably rip the lug off by hand. All I ride is track and in sand no rocks or any spinning on anything that would wreck a tire like this. Front tires seem good. For sand and soft dirt I find they dig a lot and bite really hard. They have a lot of traction both front and rear but I'm not even half way worn between the wear indicator and where they were brand new and now I have to replace my rear tires

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  • STI Black Diamond XTR Radial ATV Tire

    STI Black Diamond XTR Radial ATV Tire

    Mark in NT

    Awesome Tyres Will buy again

    This is my second set. The first are on my 2013 Rincon. Cant fault them. Tough, reliable, and a good ride to boot. i ride mostly hard pack, but when it rains in the Northern Territory, Australia, the mud is thick and deep. These tyres have not let me down yet. Of course I have been bogged a couple of times, but with a bit of weight shifting they find traction and drag me out of every bog hole I can find. Need to run lower pressures than normal. I'm runing about 2.5 - 3 psi. the side walls are very stiff and I reckon I could run them flat ( lower speed of course) to get me out of trouble. Will definately buy these again. 650kms on the last set and they hardly look worn considering the amount of circle work I do... lol. Cheers Mark

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  • STI Roctane XD Radial ATV Tire

    STI Roctane XD Radial ATV Tire

    Erin in AZ

    These are the only way to go in Az desert

    Love them great everywhere I tried them true to size. Good price and they are supposed to last. All this in a radial tire. Found that on my RZR that 4psi works in the rocks and trail riding. Comments On May 25, 2014: Love them great everywhere I tried them true to size. Good price and they are supposed to last. All this in a radial tire. Found that on my RZR that 4psi works in the rocks and trail riding.

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  • STI Vortex V-Roll Rear ATV Sand Tire

    STI Vortex V-Roll Rear ATV Sand Tire

    Matt in CO

    Save your money

    Did some reading on different paddle tires and decided to give them a try. Really disappointing! My friend has the 900 as well and went with the sand stars and he out climbs me constantly and gets a better jump out of the hole. Even on the stock big horns he passed me on a hill climb. Probably be a better tire if you have a turbo or more power but you can do better for less.

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  • STI Outback XT ATV Tire

    STI Outback XT ATV Tire

    Honda Rancher 420 in North Carolina

    Perfect Tire!!

    These tire are great much lighter then other tires especially my old kenda executioners, and mud tires I've bought! STI did their homework on these very well built and great design. Very satisfied with the product, tons of tread, deep lugs but flex wonderful on hard pack and rocky conditions! Will by these again for sure, BEST ALL AROUND TIRE FOR THE MONEY HANDS DOWN!!! And Rocky Mountain ATV is always top notch with their shipping and customer service!

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