My teryx came with XTR 27's and I never thought anymore about it. After doing some reading on the internet I found out that these tires are radials instead of reglular bias ply. I run these tires at 3lbs in front and 4lbs in the back and they still don't have much buldge out the sides. I find this unit to be smoother then my quads have been(Grizzly with Swamp lites 27's-current) and am wondering if it is because these tires are Radials? Is there any other benifits to radial tires on an ATV?