ATV Wheels & Tires Tire Pressure June 25, 2015 Help! I just up graded tires on my 500 Touring to Maxxis Big Horns Radial’s from the factory bias tires. and not sure if I should still go with the 5psi as the old tires or not. Thanks Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related