RZR 800 Specific Discussion rock crawlers what size tired you running June 8, 2015 I have a rsx 850I and I’m trying to figure out the perfect tire size for crawling that won’t drain all the power. So what size are you running and are you running factory settings or do you have a programmer or clutch swap ect. Thanks Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related