RZR 900 - 50'' Trail Models Katani Mongrels vs. Dirt Commanders November 29, 2015 I have narrowed it down to these two tires. Going to go with 27x9x12s with a full size spare. Curious to know if anyone here is running either and what you have to say about them. Thanks!! Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related