The New Maxxis 11x6.5-6 Treaded is made of a soft T-18 compound, which is super stable while shredding trails at high speeds due to its added width. A rad tread pattern that wraps onto the side wall just enough to give you an extra advantage while carving thru roots and rocks. its a completely different feeling than any other tires currently on the market.Tire Dry Weight: 51.6 OZ We have been shredding this tire for about 6 months and its been put thru the paces. The first thing you will notice is the stability at high speeds, Speed Wobbles SUCK! Yet soft shoulders for easy carving. Due to the diamond shaped tread pattern, road noise you would typically notice with a treaded tire is greatly decreased. The sidewalls of this tire are low profile and reinforced, you can weigh 200lbs and ride with 10-13 psi with ease. Once mounted the tire extends past the wheel hub for added protection from rocks and debris on the trails. This may very well be the Ultimate off-road onewheel tire available, we certainly think so!! THIS TIRE DOES NOT REQUIRE EXTENDED RAILS, FITS WTF RAILS