Most of what your asking is based on your riding style, which everyones is different. For myself I like 21/22 RAZR 's or the stock tires for my trail riding, the stock seem to get nice traction in the leaves and pine needles. Rocks and sand are a different story...I know there is a tire forum, but nobody uses it. What are some good tires to put on a Warrior? Also, should I stick with stock size?