The 2.3 TCS version of the Weirwolf sums up nothing but fun. Surf through rock gardens, float through mud and Moab-like sand like a champ on these. Perhaps the best thing about these tires are the weight - sub 1000 grams for a full-on all mountain tire in this giant carcass diameter is unparalleled - thanks to the WTB TCS design.
In case you were wondering about the spelling and etymology of the Weirwolf tire, the name is derived from one of its's founders and ex-pro mountain bikers Mark Weir. The tire first graced the market in 2002 and was well received, simply because it rolled fast and had near perfect cornering grip.
Since then, the Weirwolf has had an extensive renovation in an attempt to make the ultimate all mountain tire with unparalleled grip and predictability at 'any' lean angle. Upgrades are as follows: There is now an extra row of knobs between the crown and side knobs for added traction while leaning it over in a corner. The center tread is closer together for faster rolling and the outer row of side knobs now has four knobs instead of three for more grip and again, faster rolling while cornering. Perhaps the most important upgrade is the least visible - terraced or stair steps on the outer knobs with progressive and damped flex. In the initial stages of a lean, the knobs slightly conform to the terrain, as pressure increases the knobs become more firm. This brings the already amazing cornering of the Weirwolf to a whole new level.
This TCS version of the Weirwolf features WTB's Tubeless Compatible System (TCS), meaning, the tire uses a standard casing with a UST compatible bead. Basically, it forgoes the butyl rubber that is molded around the inside of the casing and bead. Use some sealant, and you will have a reliable tubeless set up that weights less. The tire also has a grippy, DNA 60a durameter compound tread with a light but durable UST Aramid bread. The casing is reinforced to provided enhanced protection from the elements.