ATV Wheels & Tires New tire on big boss 800 2014 mod July 24, 2015 How big tire can i put on my big boss 800 without doing any modify ? I heard 27" is the biggest. 25" is orginal 27×10-12 front and 27×12-12 back Thanks Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related