I have experience with the System 3 350's (the more squared off tread) and am not happy with them. I bought 5 tires for my Honda Pioneer in a 35" and had to sent 2 back to RMATV for warranty for out of round. I looked yesterday and RMATV no long sells system 3 tires so that should say something. I am still running 10+ OZ of weight on the 5 tires I still have to get them with .5-1 oz to have them balanced. They get flat spots after sitting for more than a day and take a few miles to work out, never again for my with this style of tire. Now I have friend that run 32" sand tires from them and really like them, but a sand tire is a whole other ball game.